diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.gitignore b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.gitignore
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+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.gitignore
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+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.idea/codeStyles/Project.xml b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.idea/codeStyles/Project.xml
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.idea/jarRepositories.xml b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/.idea/jarRepositories.xml
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/ForegroundDemo.jpg b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/ForegroundDemo.jpg
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/README.md b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/README.md
new file mode 100644
index 0000000..26d15bc
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/README.md
@@ -0,0 +1,9 @@
+# ForegroundDemo
+
+This Android App demonstrates how to make a Foreground Service.
+
+Visit: [https://github.com/CC-MNNIT/2021-22-Classes/tree/main/Android/2021_05_13_AndroidClass-3/ForegroundDemo/](https://github.com/CC-MNNIT/2021-22-Classes/tree/main/Android/2021_05_13_AndroidClass-3/ForegroundDemo/) for the source code.
+
+## Outcome:
+
+
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/.gitignore b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/.gitignore
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+/build
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/build.gradle b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/build.gradle
new file mode 100644
index 0000000..4c4f8d1
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/build.gradle
@@ -0,0 +1,30 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 30
+ defaultConfig {
+ applicationId "com.wave.foregroundservice"
+ minSdkVersion 21
+ targetSdkVersion 30
+ 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:1.2.0'
+ implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+ implementation 'com.google.android.material:material:1.3.0'
+ implementation 'androidx.core:core:1.3.2'
+ testImplementation 'junit:junit:4.13.2'
+ androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+}
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/proguard-rules.pro b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/androidTest/java/com/wave/foregroundservice/ExampleInstrumentedTest.java b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/androidTest/java/com/wave/foregroundservice/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..6a41ae7
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/androidTest/java/com/wave/foregroundservice/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.wave.foregroundservice;
+
+import android.content.Context;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see Testing documentation
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+ @Test
+ public void useAppContext() {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("com.wave.foregroundservice", appContext.getPackageName());
+ }
+}
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/AndroidManifest.xml b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/AndroidManifest.xml
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--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/AndroidManifest.xml
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/ForegroundService.java b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/ForegroundService.java
new file mode 100644
index 0000000..2675bc7
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/ForegroundService.java
@@ -0,0 +1,70 @@
+package com.wave.foregroundservice;
+
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Intent;
+import android.os.Build;
+import android.os.IBinder;
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+
+public class ForegroundService extends Service {
+ public static final String CHANNEL_ID = "ForegroundServiceChannel";
+
+ @Override
+ public void onCreate() {
+ super.onCreate();
+ }
+
+ @Override
+ public int onStartCommand(Intent intent, int flags, int startId) {
+ String input = intent.getStringExtra("inputExtra");
+ createNotificationChannel();
+ Intent notificationIntent = new Intent(this, MainActivity.class);
+ PendingIntent pendingIntent = PendingIntent.getActivity(this,
+ 0, notificationIntent, 0);
+
+ Notification notification = new NotificationCompat.Builder(this, CHANNEL_ID)
+ .setContentTitle("Foreground Service")
+ .setContentText(input)
+ .setSmallIcon(R.drawable.ic_stat_name)
+ .setContentIntent(pendingIntent)
+ .build();
+
+ startForeground(1, notification);
+
+ //do heavy work on a background thread
+
+
+ //stopSelf();
+
+ return START_NOT_STICKY;
+ }
+
+ @Override
+ public void onDestroy() {
+ super.onDestroy();
+ }
+
+ @Nullable
+ @Override
+ public IBinder onBind(Intent intent) {
+ return null;
+ }
+
+ private void createNotificationChannel() {
+ if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+ NotificationChannel serviceChannel = new NotificationChannel(
+ CHANNEL_ID,
+ "Foreground Service Channel",
+ NotificationManager.IMPORTANCE_DEFAULT
+ );
+
+ NotificationManager manager = getSystemService(NotificationManager.class);
+ manager.createNotificationChannel(serviceChannel);
+ }
+ }
+}
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/MainActivity.java b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/MainActivity.java
new file mode 100644
index 0000000..0d96a59
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/java/com/wave/foregroundservice/MainActivity.java
@@ -0,0 +1,48 @@
+package com.wave.foregroundservice;
+
+import android.content.Intent;
+import android.os.Bundle;
+import androidx.core.content.ContextCompat;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.view.View;
+import android.widget.Button;
+
+public class MainActivity extends AppCompatActivity {
+ Button btnStartService, btnStopService;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+ btnStartService = findViewById(R.id.buttonStartService);
+ btnStopService = findViewById(R.id.buttonStopService);
+
+ btnStartService.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ startService();
+ }
+ });
+
+ btnStopService.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ stopService();
+ }
+ });
+ }
+
+ public void startService() {
+ Intent serviceIntent = new Intent(this, ForegroundService.class);
+ serviceIntent.putExtra("inputExtra", "Foreground Service Example in Android");
+
+ ContextCompat.startForegroundService(this, serviceIntent);
+ }
+
+ public void stopService() {
+ Intent serviceIntent = new Intent(this, ForegroundService.class);
+ stopService(serviceIntent);
+ }
+}
+
diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-anydpi-v24/ic_stat_name.xml b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-anydpi-v24/ic_stat_name.xml
new file mode 100644
index 0000000..a4b3d9b
--- /dev/null
+++ b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-anydpi-v24/ic_stat_name.xml
@@ -0,0 +1,14 @@
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+
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-hdpi/ic_stat_name.png b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-hdpi/ic_stat_name.png
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-mdpi/ic_stat_name.png b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-mdpi/ic_stat_name.png
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diff --git a/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/Android/2021_05_13_AndroidClass-3/ForegroundDemo/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,34 @@
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