한글공부 Hangul Study

Do not use string concatenation to assemble a SQL query this way. You are not properly quoting your value, let alone handle any quotes in the value itself.

Replace queries like:

String query = "SELECT * FROM " + TABLE_SCORES + " WHERE " + KEY_TITLE + " = " + title;
Log.e(DatabaseHelper.class.getName(), query);
Cursor c = db.rawQuery(query,null); //GETTING ERROR HERE

with:

String query = "SELECT * FROM " + TABLE_SCORES + " WHERE " + KEY_TITLE + " = ?";
Log.e(DatabaseHelper.class.getName(), query);
Cursor c = db.rawQuery(query, new String[] { title });

The ? tells SQLite to bind the supplied argument, handling quoting, escaping of embedded quotes, and so on.

youtu.be/RzNRMPicfC4

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.jwlee.covid_tracker">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_covid_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_covid_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".DetailActivity"></activity>
        <activity android:name=".AffectedCountries" />
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.0.0"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        mavenCentral()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29

    defaultConfig {
        applicationId "com.jwlee.covid_tracker"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'com.github.blackfizz:eazegraph:1.2.5l@aar'
    implementation 'com.nineoldandroids:library:2.4.0'
    implementation 'com.android.volley:volley:1.1.1'
    implementation 'com.leo.simplearcloader:simplearcloader:1.0.+'

    implementation 'com.github.bumptech.glide:glide:4.11.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0'

    implementation 'com.google.android.gms:play-services-ads:15.0.1'
}

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#024265</color>
<color name="colorPrimaryDark">#024265</color>
<color name="colorAccent">#05af9b</color>

<color name="color_one">#fb7268</color>
<color name="color_white">#ededf2</color>
<color name="color_two">#e3e0e0</color>

<color name="cases">#ffa726</color>
<color name="recovered">#66bb6a</color>
<color name="deaths">#ef5350</color>
<color name="active">#29b6f6</color>
    </resources>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/color_white"
    tools:context=".AffectedCountries">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:id="@+id/edtSearch"
        android:layout_margin="10dp"
        android:maxLines="1"
        android:singleLine="true"
        android:paddingLeft="20dp"
        android:hint="Search"
        android:drawablePadding="15dp"
        android:background="@drawable/edittext_shadow"
        android:drawableLeft="@drawable/ic_baseline_search_24"
        />

    <ListView
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:id="@+id/listView"
        android:layout_below="@+id/edtSearch"
        android:layout_margin="10dp"/>
    <com.leo.simplearcloader.SimpleArcLoader
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:id="@+id/loader"
        app:arc_style="simple_arc"
        android:visibility="visible"
        android:layout_centerInParent="true"/>

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".DetailActivity">




    <RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="25dp"
    android:layout_marginTop="10dp"
    android:layout_marginRight="25dp"
    android:layout_marginBottom="10dp">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif-light"
        android:text="Country"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/tvCountry"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:fontFamily="sans-serif-light"
        android:gravity="end"
        android:text="0"
        android:textAlignment="textEnd"
        android:textColor="@color/color_one"
        android:textSize="18sp"
        android:textStyle="bold" />

</RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Cases"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvCases"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Today Cases"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvTodayCases2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Deaths"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvDeaths2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Today Deaths"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvTodayDeaths"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Recovered"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvRecovered"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Active"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvActive"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="Critical"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tvCritical"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="casesPerOneMillion"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_casesPerOneMillion"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="deathsPerOneMillion"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_deathsPerOneMillion"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="tests"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_tests"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="testsPerOneMillion"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_testsPerOneMillion"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="population"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_population"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"
            android:text="0"
            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginLeft="20dp"

        android:layout_marginRight="20dp"
        android:background="@color/color_two" />
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="25dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="25dp"
        android:layout_marginBottom="10dp">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-light"
            android:text="continent"
            android:textSize="18sp" />

        <TextView
            android:id="@+id/tv_continent"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:fontFamily="sans-serif-light"
            android:gravity="end"

            android:textAlignment="textEnd"
            android:textColor="@color/color_one"
            android:textSize="18sp"
            android:textStyle="bold" />

    </RelativeLayout>



</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/color_white"
    tools:context=".MainActivity">

    <androidx.cardview.widget.CardView
        android:id="@+id/cardViewGraph"
        android:layout_width="match_parent"
        android:layout_height="180dp"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginRight="20dp"
        app:cardCornerRadius="5dp"
        app:cardElevation="10dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="horizontal"
            android:weightSum="2">

            <org.eazegraph.lib.charts.PieChart
                android:id="@+id/piechart"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_marginLeft="15dp"
                android:layout_marginTop="15dp"
                android:layout_marginBottom="15dp"
                android:layout_weight="1"
                android:padding="6dp" />

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_marginLeft="20dp"
                android:layout_weight="1"
                android:gravity="center_vertical"
                android:orientation="vertical">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="15dp"
                    android:gravity="center_vertical">

                    <View
                        android:layout_width="15dp"
                        android:layout_height="match_parent"
                        android:background="@color/cases" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingLeft="10dp"
                        android:text="Total Cases" />

                </LinearLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="15dp"
                    android:layout_marginTop="5dp"
                    android:gravity="center_vertical">

                    <View
                        android:layout_width="15dp"
                        android:layout_height="match_parent"
                        android:background="@color/recovered" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingLeft="10dp"
                        android:text="Recovered" />

                </LinearLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="15dp"
                    android:layout_marginTop="5dp"
                    android:gravity="center_vertical">

                    <View
                        android:layout_width="15dp"
                        android:layout_height="match_parent"
                        android:background="@color/deaths" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingLeft="10dp"
                        android:text="Deaths" />

                </LinearLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="15dp"
                    android:layout_marginTop="5dp"
                    android:gravity="center_vertical">

                    <View
                        android:layout_width="15dp"
                        android:layout_height="match_parent"
                        android:background="@color/active" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingLeft="10dp"
                        android:text="Active" />

                </LinearLayout>

            </LinearLayout>

        </LinearLayout>

    </androidx.cardview.widget.CardView>

    <androidx.cardview.widget.CardView

        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/btnTrack"
        android:layout_below="@+id/cardViewGraph"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        android:layout_marginRight="20dp"
        app:cardCornerRadius="5dp"
        app:cardElevation="10dp">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <com.leo.simplearcloader.SimpleArcLoader
                android:id="@+id/loader"
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_centerInParent="true"
                android:visibility="visible"
                app:arc_style="simple_arc"

                >

            </com.leo.simplearcloader.SimpleArcLoader>

            <ScrollView
                android:id="@+id/scrollStats"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:visibility="gone">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="20dp"
                        android:text="global stats"
                        android:textAllCaps="true"
                        android:textSize="28sp"
                        android:textStyle="bold" />

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"
                        android:layout_marginTop="5dp"
                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />

                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Cases"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvCases"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Recovered"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvRecovered"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>
                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Critical"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvCritical"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Active"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvActive"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Today Casese"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvTodayCasese"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Total Deaths"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvTotalDeaths"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Today Deaths"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvTodayDeaths"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:layout_marginLeft="20dp"

                        android:layout_marginRight="20dp"
                        android:background="@color/color_two" />
                    <RelativeLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginLeft="25dp"
                        android:layout_marginTop="10dp"
                        android:layout_marginRight="25dp"
                        android:layout_marginBottom="10dp">

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:fontFamily="sans-serif-light"
                            android:text="Affected Countries"
                            android:textSize="18sp" />

                        <TextView
                            android:id="@+id/tvAffectedCountries"
                            android:layout_width="fill_parent"
                            android:layout_height="wrap_content"
                            android:layout_alignParentRight="true"
                            android:fontFamily="sans-serif-light"
                            android:gravity="end"
                            android:text="0"
                            android:textAlignment="textEnd"
                            android:textColor="@color/color_one"
                            android:textSize="18sp"
                            android:textStyle="bold" />

                    </RelativeLayout>




                </LinearLayout>

            </ScrollView>


        </RelativeLayout>

    </androidx.cardview.widget.CardView>


    <Button
        android:id="@+id/btnTrack"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_margin="20dp"
        android:background="@color/color_one"
        android:onClick="goTrackCountries"
        android:padding="5dp"
        android:text="Track countries"
        android:textColor="@android:color/white"
        android:textSize="18sp" />


</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:layout_margin="5dp">
    <ImageView
        android:layout_width="80dp"
        android:layout_height="55dp"
        android:id="@+id/imageFlag"
        android:padding="5dp"/>
    
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tvCountryName"
        android:layout_gravity="center_vertical"
        android:text="Country Name"
        android:textSize="20sp"
        android:textStyle="bold"
        android:paddingLeft="15dp"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:right="1dp"
        android:left="1dp"
        android:bottom="2dp"
        >
        <shape
            android:shape="rectangle">
            <solid android:color="#ffffff"/>
            <stroke android:color="#66000000" android:width="0.5dp"/>

        </shape>
    </item>

</layer-list>

package com.jwlee.covid_tracker;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.InterstitialAd;
import com.google.android.gms.ads.MobileAds;
import com.leo.simplearcloader.SimpleArcLoader;

import org.eazegraph.lib.models.PieModel;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.List;

public class AffectedCountries extends AppCompatActivity {

    EditText editSearch;
    ListView listView;
    SimpleArcLoader simpleArcLoader;

    public static List<CountryModel> countryModelsList = new ArrayList<>();
    CountryModel countryModel;
    MyCustomAdapter myCustomAdapter;

  

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_affected_countries);

        editSearch = findViewById(R.id.edtSearch);
        listView = findViewById(R.id.listView);
        simpleArcLoader = findViewById(R.id.loader);



        getSupportActionBar().setTitle("Affected Countries");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);


        fetchData();

     

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            startActivity(new Intent(getApplicationContext(),DetailActivity.class).putExtra("position",position));

               
            }
        });

        editSearch.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                myCustomAdapter.getFilter().filter(s);
                myCustomAdapter.notifyDataSetChanged();

            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });


    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        if(item.getItemId()==android.R.id.home)
            finish();
        return super.onOptionsItemSelected(item);
    }

    private void fetchData() {
        String url = "https://corona.lmao.ninja/v2/countries";
        simpleArcLoader.start();
        StringRequest request = new StringRequest(Request.Method.GET, url,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {

                        try{
                        
                            JSONArray jsonArray = new JSONArray(response);

                            for(int i=0; i<jsonArray.length();i++){
                                JSONObject jsonObject = jsonArray.getJSONObject(i);

                                String countryName = jsonObject.getString("country");
                                String cases = jsonObject.getString("cases");
                                String todayCases = jsonObject.getString("todayCases");
                                String deaths = jsonObject.getString("deaths");
                                String todayDeaths = jsonObject.getString("todayDeaths");
                                String recovered = jsonObject.getString("recovered");
                                String active = jsonObject.getString("active");
                                String critical = jsonObject.getString("critical");

                                String casesPerOneMillion = jsonObject.getString("casesPerOneMillion");
                                String deathsPerOneMillion = jsonObject.getString("deathsPerOneMillion");
                                String tests = jsonObject.getString("tests");
                                String testsPerOneMillion = jsonObject.getString("testsPerOneMillion");
                                String population = jsonObject.getString("population");
                                String continent = jsonObject.getString("continent");
                                String oneCasePerPeople = jsonObject.getString("oneCasePerPeople");
                                String oneDeathPerPeople = jsonObject.getString("oneDeathPerPeople");
                                String oneTestPerPeople = jsonObject.getString("oneTestPerPeople");
                                String activePerOneMillion = jsonObject.getString("activePerOneMillion");
                                String recoveredPerOneMillion = jsonObject.getString("recoveredPerOneMillion");
                                String criticalPerOneMillion = jsonObject.getString("criticalPerOneMillion");

                                JSONObject object = jsonObject.getJSONObject("countryInfo");
                                String flagUrl = object.getString("flag");

                                countryModel = new CountryModel(flagUrl, countryName, cases, todayCases, deaths, todayDeaths, recovered, active, critical,
                                        casesPerOneMillion,deathsPerOneMillion,tests,testsPerOneMillion,population,continent,oneCasePerPeople,oneDeathPerPeople,
                                        oneTestPerPeople,activePerOneMillion,recoveredPerOneMillion,criticalPerOneMillion);
                                countryModelsList.add(countryModel);


                            }
                            myCustomAdapter = new MyCustomAdapter(AffectedCountries.this, countryModelsList);
                            listView.setAdapter(myCustomAdapter);
                            simpleArcLoader.stop();
                            simpleArcLoader.setVisibility(View.GONE);




                        }catch (JSONException e){
                            e.printStackTrace();
                            simpleArcLoader.stop();
                            simpleArcLoader.setVisibility(View.GONE);
                        }


                    }
                }, new Response.ErrorListener() {


            @Override
            public void onErrorResponse(VolleyError error) {
                simpleArcLoader.stop();
                simpleArcLoader.setVisibility(View.GONE);
                Toast.makeText(AffectedCountries.this, error.getMessage(),Toast.LENGTH_SHORT).show();


            }
        });

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(request);

    }
}

package com.jwlee.covid_tracker;

public class CountryModel {
    private String flag, country, cases, todayCases, deaths, todayDeaths, recovered, active, critical,
    casesPerOneMillion,deathsPerOneMillion,tests,testsPerOneMillion,population,continent,oneCasePerPeople,
            oneDeathPerPeople,oneTestPerPeople,activePerOneMillion,recoveredPerOneMillion,criticalPerOneMillion;

    public CountryModel(String flag, String country, String cases, String todayCases, String deaths, String todayDeaths, String recovered, String active, String critical, String casesPerOneMillion, String deathsPerOneMillion, String tests, String testsPerOneMillion, String population, String continent, String oneCasePerPeople, String oneDeathPerPeople, String oneTestPerPeople, String activePerOneMillion, String recoveredPerOneMillion, String criticalPerOneMillion) {
        this.flag = flag;
        this.country = country;
        this.cases = cases;
        this.todayCases = todayCases;
        this.deaths = deaths;
        this.todayDeaths = todayDeaths;
        this.recovered = recovered;
        this.active = active;
        this.critical = critical;
        this.casesPerOneMillion = casesPerOneMillion;
        this.deathsPerOneMillion = deathsPerOneMillion;
        this.tests = tests;
        this.testsPerOneMillion = testsPerOneMillion;
        this.population = population;
        this.continent = continent;
        this.oneCasePerPeople = oneCasePerPeople;
        this.oneDeathPerPeople = oneDeathPerPeople;
        this.oneTestPerPeople = oneTestPerPeople;
        this.activePerOneMillion = activePerOneMillion;
        this.recoveredPerOneMillion = recoveredPerOneMillion;
        this.criticalPerOneMillion = criticalPerOneMillion;
    }

    public CountryModel() {

    }

    public String getFlag() {
        return flag;
    }

    public void setFlag(String flag) {
        this.flag = flag;
    }

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }

    public String getCases() {
        return cases;
    }

    public void setCases(String cases) {
        this.cases = cases;
    }

    public String getTodayCases() {
        return todayCases;
    }

    public void setTodayCases(String todayCases) {
        this.todayCases = todayCases;
    }

    public String getDeaths() {
        return deaths;
    }

    public void setDeaths(String deaths) {
        this.deaths = deaths;
    }

    public String getTodayDeaths() {
        return todayDeaths;
    }

    public void setTodayDeaths(String todayDeaths) {
        this.todayDeaths = todayDeaths;
    }

    public String getRecovered() {
        return recovered;
    }

    public void setRecovered(String recovered) {
        this.recovered = recovered;
    }

    public String getActive() {
        return active;
    }

    public void setActive(String active) {
        this.active = active;
    }

    public String getCritical() {
        return critical;
    }

    public void setCritical(String critical) {
        this.critical = critical;
    }

    public String getCasesPerOneMillion() {
        return casesPerOneMillion;
    }

    public void setCasesPerOneMillion(String casesPerOneMillion) {
        this.casesPerOneMillion = casesPerOneMillion;
    }

    public String getDeathsPerOneMillion() {
        return deathsPerOneMillion;
    }

    public void setDeathsPerOneMillion(String deathsPerOneMillion) {
        this.deathsPerOneMillion = deathsPerOneMillion;
    }

    public String getTests() {
        return tests;
    }

    public void setTests(String tests) {
        this.tests = tests;
    }

    public String getTestsPerOneMillion() {
        return testsPerOneMillion;
    }

    public void setTestsPerOneMillion(String testsPerOneMillion) {
        this.testsPerOneMillion = testsPerOneMillion;
    }

    public String getPopulation() {
        return population;
    }

    public void setPopulation(String population) {
        this.population = population;
    }

    public String getContinent() {
        return continent;
    }

    public void setContinent(String continent) {
        this.continent = continent;
    }

    public String getOneCasePerPeople() {
        return oneCasePerPeople;
    }

    public void setOneCasePerPeople(String oneCasePerPeople) {
        this.oneCasePerPeople = oneCasePerPeople;
    }

    public String getOneDeathPerPeople() {
        return oneDeathPerPeople;
    }

    public void setOneDeathPerPeople(String oneDeathPerPeople) {
        this.oneDeathPerPeople = oneDeathPerPeople;
    }

    public String getOneTestPerPeople() {
        return oneTestPerPeople;
    }

    public void setOneTestPerPeople(String oneTestPerPeople) {
        this.oneTestPerPeople = oneTestPerPeople;
    }

    public String getActivePerOneMillion() {
        return activePerOneMillion;
    }

    public void setActivePerOneMillion(String activePerOneMillion) {
        this.activePerOneMillion = activePerOneMillion;
    }

    public String getRecoveredPerOneMillion() {
        return recoveredPerOneMillion;
    }

    public void setRecoveredPerOneMillion(String recoveredPerOneMillion) {
        this.recoveredPerOneMillion = recoveredPerOneMillion;
    }

    public String getCriticalPerOneMillion() {
        return criticalPerOneMillion;
    }

    public void setCriticalPerOneMillion(String criticalPerOneMillion) {
        this.criticalPerOneMillion = criticalPerOneMillion;
    }
}

package com.jwlee.covid_tracker;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.TextView;

import java.text.DecimalFormat;

public class DetailActivity extends AppCompatActivity {

    private int positionCountry;
    TextView tvCountry, tvCases,tvRecovered,tvCritical, tvActive,tvTodayCases,tvTotalDeaths,tvTodayDeaths;
    TextView tv_casesPerOneMillion, tv_deathsPerOneMillion,tv_tests, tv_testsPerOneMillion,tv_population,tv_continent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detail);

        Intent intent = getIntent();
        positionCountry = intent.getIntExtra("position",0);

        getSupportActionBar().setTitle("Details of "+AffectedCountries.countryModelsList.get(positionCountry).getCountry());
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);



        tvCountry =findViewById(R.id.tvCountry);
        tvCases = findViewById(R.id.tvCases);
        tvRecovered = findViewById(R.id.tvRecovered);
        tvCritical = findViewById(R.id.tvCritical);
        tvActive = findViewById(R.id.tvActive);
        tvTodayCases = findViewById(R.id.tvTodayCases2);
        tvTotalDeaths = findViewById(R.id.tvDeaths2);
        tvTodayDeaths = findViewById(R.id.tvTodayDeaths);

        tv_casesPerOneMillion = findViewById(R.id.tv_casesPerOneMillion);
        tv_deathsPerOneMillion = findViewById(R.id.tv_deathsPerOneMillion);
                tv_tests=findViewById(R.id.tv_tests);
        tv_testsPerOneMillion=findViewById(R.id.tv_testsPerOneMillion);
                tv_population=findViewById(R.id.tv_population);
        tv_continent = findViewById(R.id.tv_continent);



        tvCountry.setText(AffectedCountries.countryModelsList.get(positionCountry).getCountry());
        tvCases.setText(AffectedCountries.countryModelsList.get(positionCountry).getCases());
        tvRecovered.setText(AffectedCountries.countryModelsList.get(positionCountry).getRecovered());
        tvCritical.setText(AffectedCountries.countryModelsList.get(positionCountry).getCritical());
        tvActive.setText(AffectedCountries.countryModelsList.get(positionCountry).getActive());
        tvTodayCases.setText(AffectedCountries.countryModelsList.get(positionCountry).getTodayCases());
       tvTotalDeaths.setText(AffectedCountries.countryModelsList.get(positionCountry).getDeaths());
        tvTodayDeaths.setText(AffectedCountries.countryModelsList.get(positionCountry).getTodayDeaths());
        tv_casesPerOneMillion.setText(AffectedCountries.countryModelsList.get(positionCountry).getCasesPerOneMillion());
        tv_deathsPerOneMillion.setText(AffectedCountries.countryModelsList.get(positionCountry).getDeathsPerOneMillion());
        tv_tests.setText(AffectedCountries.countryModelsList.get(positionCountry).getTests());
        tv_testsPerOneMillion.setText(AffectedCountries.countryModelsList.get(positionCountry).getTestsPerOneMillion());
        tv_population.setText(AffectedCountries.countryModelsList.get(positionCountry).getPopulation());
        tv_continent.setText(AffectedCountries.countryModelsList.get(positionCountry).getContinent());

    }
    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        if(item.getItemId()==android.R.id.home)
            finish();
        return super.onOptionsItemSelected(item);
    }
}

package com.jwlee.covid_tracker;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.leo.simplearcloader.SimpleArcLoader;

import org.eazegraph.lib.charts.PieChart;
import org.eazegraph.lib.models.PieModel;
import org.json.JSONException;
import org.json.JSONObject;

public class MainActivity extends AppCompatActivity {

    TextView tvCases, tvRecovered, tvCritical, tvActive, tvTodayCases, tvTotalDeaths, tvTodayDeaths, tvAffectedCountries;
    SimpleArcLoader simpleArcLoader;
    ScrollView scrollView;
    PieChart pieChart;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tvCases = findViewById(R.id.tvCases);
        tvRecovered = findViewById(R.id.tvRecovered);
        tvCritical = findViewById(R.id.tvCritical);
        tvActive = findViewById(R.id.tvActive);
        tvTodayCases = findViewById(R.id.tvTodayCasese);
        tvTotalDeaths = findViewById(R.id.tvTotalDeaths);
        tvTodayDeaths = findViewById(R.id.tvTodayDeaths);
        tvAffectedCountries = findViewById(R.id.tvAffectedCountries);

        simpleArcLoader = findViewById(R.id.loader);
        scrollView = findViewById(R.id.scrollStats);
        pieChart = findViewById(R.id.piechart);

        fetchData();


    }

    private void fetchData() {
        String url = "https://corona.lmao.ninja/v2/all";
        simpleArcLoader.start();
        StringRequest request = new StringRequest(Request.Method.GET, url,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {

                        try{
                            JSONObject jsonObject = new JSONObject(response.toString());

                            tvCases.setText(jsonObject.getString("cases"));
                            tvRecovered.setText(jsonObject.getString("recovered"));
                            tvCritical.setText(jsonObject.getString("critical"));
                            tvActive.setText(jsonObject.getString("active"));

                            tvTodayCases.setText(jsonObject.getString("todayCases"));
                            tvTotalDeaths.setText(jsonObject.getString("deaths"));
                            tvTodayDeaths.setText(jsonObject.getString("todayDeaths"));
                            tvAffectedCountries.setText(jsonObject.getString("affectedCountries"));

                            pieChart.addPieSlice(new PieModel("Cases",Integer.parseInt(tvCases.getText().toString()),
                                    Color.parseColor("#ffa726")));
                            pieChart.addPieSlice(new PieModel("Recovered",Integer.parseInt(tvRecovered.getText().toString()),
                                    Color.parseColor("#66bb6a")));
                            pieChart.addPieSlice(new PieModel("Deaths",Integer.parseInt(tvTotalDeaths.getText().toString()),
                                    Color.parseColor("#ef5350")));
                            pieChart.addPieSlice(new PieModel("Active",Integer.parseInt(tvActive.getText().toString()),
                                    Color.parseColor("#29b6f6")));

                            pieChart.startAnimation();

                            simpleArcLoader.stop();
                            simpleArcLoader.setVisibility(View.GONE);
                            scrollView.setVisibility(View.VISIBLE);



                        }catch (JSONException e){
                            e.printStackTrace();
                            simpleArcLoader.stop();
                            simpleArcLoader.setVisibility(View.GONE);
                            scrollView.setVisibility(View.VISIBLE);
                        }

                    }
                }, new Response.ErrorListener() {


            @Override
            public void onErrorResponse(VolleyError error) {
                simpleArcLoader.stop();
                simpleArcLoader.setVisibility(View.GONE);
                scrollView.setVisibility(View.VISIBLE);
                Toast.makeText(MainActivity.this, error.getMessage(),Toast.LENGTH_SHORT).show();


            }
        });

        RequestQueue requestQueue = Volley.newRequestQueue(this);
        requestQueue.add(request);

    }


    public void goTrackCountries(View view) {

        startActivity(new Intent(getApplicationContext(),AffectedCountries.class));

    }
}

package com.jwlee.covid_tracker;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.bumptech.glide.Glide;

import java.util.ArrayList;
import java.util.List;

public class MyCustomAdapter extends ArrayAdapter<CountryModel> {

    private Context context;
    private List<CountryModel> countryModelList;
    private List<CountryModel> countryModelListFiltered;

    public MyCustomAdapter( Context context, List<CountryModel>countryModelList) {
        super(context, R.layout.list_custom_item,countryModelList);

        this.context = context;
        this.countryModelList = countryModelList;
        this.countryModelListFiltered = countryModelList;
    }

    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_custom_item,null,true);
        TextView tvCountryName = view.findViewById(R.id.tvCountryName);
        ImageView imageView = view.findViewById(R.id.imageFlag);

        tvCountryName.setText(countryModelListFiltered.get(position).getCountry());
        Glide.with(context).load(countryModelListFiltered.get(position).getFlag()).into(imageView);


        return view;
    }

    @Override
    public int getCount() {
        return countryModelListFiltered.size();
    }

    @Nullable
    @Override
    public CountryModel getItem(int position){
        return countryModelListFiltered.get(position);
    }

    @Override
    public long getItemId(int position){
        return position;
    }

    @NonNull
    @Override
    public Filter getFilter(){
        Filter filter = new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                FilterResults filterResults = new FilterResults();
                if(constraint == null || constraint.length()==0){
                    filterResults.count = countryModelList.size();
                    filterResults.values = countryModelList;
                }else{
                    List<CountryModel> resultModel = new ArrayList<>();
                    String searchStr = constraint.toString().toLowerCase();

                    for(CountryModel itemModel:countryModelList){
                        if(itemModel.getCountry().toLowerCase().contains(searchStr)){
                            resultModel.add(itemModel);
                        }
                        filterResults.count = resultModel.size();
                        filterResults.values = resultModel;
                    }
                }
                return filterResults;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {

                countryModelListFiltered = (List<CountryModel>)results.values;
                AffectedCountries.countryModelsList = (List<CountryModel>)results.values;
                notifyDataSetChanged();


            }
        };
        return filter;
    }

}

youtu.be/QDxSf294Ods

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context=".MainActivity">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/mySongListView"
        />



</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:weightSum="10"
    tools:context=".PlayerActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:gravity="center"
        android:orientation="vertical"
        android:layout_weight="7"
        >
        <ImageView
            android:layout_width="250dp"
            android:layout_height="250dp"
            android:src="@drawable/cover_art"/>

        <TextView
            android:id="@+id/song_name_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text = "Song name"
            android:textAlignment="center"
            android:gravity="center_horizontal"
            android:textSize="20sp"
            android:singleLine="true"
            android:marqueeRepeatLimit="marquee_forever"
            android:ellipsize="marquee"
            android:scrollHorizontally="true"
            android:textColor="@color/colorPrimary"
            />


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="3"
        >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:padding="5dp">

            <SeekBar
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/seekBar"
                android:layout_alignParentBottom="true"
                android:layout_marginBottom="40dp"
                />
            <Button
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_centerHorizontal="true"
                android:id="@+id/pause"
                android:background="@drawable/ic_pause"
                android:layout_marginTop="5dp"
                />

            <Button
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_toRightOf="@+id/pause"
                android:id="@+id/next"
                android:background="@drawable/ic__skip_next"
                android:layout_marginTop="5dp"
                />


            <Button
                android:layout_width="60dp"
                android:layout_height="60dp"
                android:layout_toLeftOf="@+id/pause"
                android:id="@+id/prev"
                android:background="@drawable/ic_skip_previous"
                android:layout_marginTop="5dp"
                />

        </RelativeLayout>


    </LinearLayout>



</LinearLayout>

package com.jwlee.musicplayer;

import androidx.appcompat.app.AppCompatActivity;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.karumi.dexter.Dexter;
import com.karumi.dexter.PermissionToken;
import com.karumi.dexter.listener.PermissionDeniedResponse;
import com.karumi.dexter.listener.PermissionGrantedResponse;
import com.karumi.dexter.listener.PermissionRequest;
import com.karumi.dexter.listener.single.PermissionListener;

import java.io.File;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ListView myListViewSong;
    String[] items;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myListViewSong = findViewById(R.id.mySongListView);

        runtimePermission();

    }

    public void runtimePermission() {
        Dexter.withActivity(this).withPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
                .withListener(new PermissionListener() {
                    @Override
                    public void onPermissionGranted(PermissionGrantedResponse response) {
                        display();
                    }

                    @Override
                    public void onPermissionDenied(PermissionDeniedResponse response) {

                    }

                    @Override
                    public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token) {

                        token.continuePermissionRequest();

                    }
                }).check();
    }

    public ArrayList<File> findSong(File file) {
        ArrayList<File> arrayList = new ArrayList<>();

        File[] files = file.listFiles();
        for (File singleFile : files) {
            if (singleFile.isDirectory() && !singleFile.isHidden()) {
                arrayList.addAll(findSong(singleFile));
            } else {
                if (singleFile.getName().endsWith(".mp3") || singleFile.getName().endsWith(".wav")) {
                    arrayList.add(singleFile);
                }
            }
        }

        return arrayList;
    }

    void display() {
        final ArrayList<File> mySong = findSong(Environment.getExternalStorageDirectory());
        items = new String[mySong.size()];

        for(int i=0; i<mySong.size();i++){
            items[i]= mySong.get(i).getName().toString().replace(".mp3","").replace(".wav","");
            ArrayAdapter<String> myAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,items );
            myListViewSong.setAdapter(myAdapter);

            myListViewSong.setOnItemClickListener(new AdapterView.OnItemClickListener(){

                @Override
                public void onItemClick(AdapterView<?> parent, View view, int i, long id) {

                    String songName = myListViewSong.getItemAtPosition(i).toString();

                    startActivity(new Intent(getApplicationContext(),PlayerActivity.class)
                            .putExtra("songs",mySong).putExtra("songname",songName).putExtra("pos",i));
                }
            });

        }

    }


}

package com.jwlee.musicplayer;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.graphics.PorterDuff;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.TextView;

import java.io.File;
import java.util.ArrayList;

public class PlayerActivity extends AppCompatActivity {

    Button btn_next, btn_prev, btn_pause;
    TextView songNameText;
    SeekBar songSeekBar;
    String song_name;

    static MediaPlayer myMediaPlayer;
    int position;

    ArrayList<File> mySongs;
    Thread updateseekBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        btn_next= findViewById(R.id.next);
        btn_prev = findViewById(R.id.prev);
        btn_pause = findViewById(R.id.pause);

        songNameText = findViewById(R.id.song_name_text);
        songSeekBar = findViewById(R.id.seekBar);

        getSupportActionBar().setTitle("Now Playing");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);

        updateseekBar = new Thread() {
            @Override
            public void run(){

                int totalDuration = myMediaPlayer.getDuration();
                int currentPostion = 0;

                while (currentPostion < totalDuration){
                    try{
                        sleep(500);
                        currentPostion = myMediaPlayer.getCurrentPosition();
                        songSeekBar.setProgress(currentPostion);

                    }catch (InterruptedException e){
                        e.printStackTrace();
                    }
                }

            }
        };

        if(myMediaPlayer != null){
            myMediaPlayer.stop();
            myMediaPlayer.release();
        }

        Intent i = getIntent();
        Bundle bundle = i.getExtras();

        mySongs = (ArrayList)bundle.getParcelableArrayList("songs");
        song_name = mySongs.get(position).getName().toString();

        String songName = i.getStringExtra("songname");

        songNameText.setText(songName);
        songNameText.setSelected(true);

        position = bundle.getInt("pos",0);

        Uri u = Uri.parse(mySongs.get(position).toString());

        myMediaPlayer = MediaPlayer.create(getApplicationContext(),u);
        myMediaPlayer.start();
        songSeekBar.setMax(myMediaPlayer.getDuration() );

        updateseekBar.start();

        songSeekBar.getProgressDrawable().setColorFilter(getResources().getColor(R.color.colorPrimary), PorterDuff.Mode.MULTIPLY);
        songSeekBar.getThumb().setColorFilter(getResources().getColor(R.color.colorPrimary), PorterDuff.Mode.SRC_IN);

        songSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                myMediaPlayer.seekTo(seekBar.getProgress());

            }
        });

        btn_pause.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View v) {

                songSeekBar.setMax(myMediaPlayer.getDuration());

                if(myMediaPlayer.isPlaying()){
                    btn_pause.setBackgroundResource(R.drawable.ic_play);
                    myMediaPlayer.pause();
                }else {
                    btn_pause.setBackgroundResource(R.drawable.ic_pause);
                    myMediaPlayer.start();
                }

            }
        });

        btn_next.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View v) {
                myMediaPlayer.stop();
                myMediaPlayer.release();
                position = ((position+1)%mySongs.size());

                Uri u = Uri.parse(mySongs.get(position).toString());
                myMediaPlayer = MediaPlayer.create(getApplicationContext(),u);

                song_name = mySongs.get(position).getName().toString();
                songNameText.setText(song_name);

                myMediaPlayer.start();
            }
        });

        btn_prev.setOnClickListener(new View.OnClickListener(){

            @Override
            public void onClick(View v) {
                myMediaPlayer.stop();
                myMediaPlayer.release();

                position = (position-1< 0) ? (mySongs.size()-1) : (position-1);

                Uri u = Uri.parse(mySongs.get(position).toString());
                myMediaPlayer = MediaPlayer.create(getApplicationContext(),u);

                song_name = mySongs.get(position).getName().toString();
                songNameText.setText(song_name);

                myMediaPlayer.start();
            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {

        if(item.getItemId() == android.R.id.home){
            onBackPressed();
        }

        return super.onOptionsItemSelected(item);
    }
}

youtu.be/QDxSf294Ods

[Android] Delay handling using postDelayed method

If you want to give a delay and do something, use the postDelayed method of the Handler class.

The code below will be performed after 3 seconds.

Handler delayHandler = new Handler();

delayHandler.postDelayed(new Runnable() {

    @Override

    public void run() {

        // TODO

    }

}, 3000);