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How to set Large icon instead of small icon on Android Notification?
This example demonstrate about How to set Large icon instead of small icon on Android Notification .
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<? xml version = "1.0" encoding = "utf-8" ?> <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" android :layout_width = "match_parent" android :layout_height = "match_parent" tools :context = ".MainActivity" > <Button android :layout_width = "match_parent" android :layout_height = "wrap_content" android :layout_centerInParent = "true" android :layout_margin = "16dp" android :onClick = "createNotification" android :text = "create notification" /> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity.
package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.graphics.BitmapFactory ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.RemoteViews ; public class MainActivity extends AppCompatActivity { public static final String NOTIFICATION_CHANNEL_ID = "10001" ; private final static String default_notification_channel_id = "default" ; @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; } public void createNotification (View view) { NotificationManager mNotificationManager = (NotificationManager) getSystemService( NOTIFICATION_SERVICE ) ; NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(MainActivity. this, default_notification_channel_id ) ; mBuilder.setContentTitle( "Notification Title" ) ; mBuilder.setContentText( "Content to be added" ) ; mBuilder.setLargeIcon(BitmapFactory. decodeResource (getResources() , R.drawable. ic_launcher_foreground )) ; mBuilder.setSmallIcon(R.drawable. ic_launcher_foreground ) ; mBuilder.setAutoCancel( true ) ; if (android.os.Build.VERSION. SDK_INT >= android.os.Build.VERSION_CODES. O ) { int importance = NotificationManager. IMPORTANCE_HIGH ; NotificationChannel notificationChannel = new NotificationChannel( NOTIFICATION_CHANNEL_ID , "NOTIFICATION_CHANNEL_NAME" , importance) ; mBuilder.setChannelId( NOTIFICATION_CHANNEL_ID ) ; assert mNotificationManager != null; mNotificationManager.createNotificationChannel(notificationChannel) ; } assert mNotificationManager != null; mNotificationManager.notify(( int ) System. currentTimeMillis () , mBuilder.build()) ; } }
Step 4 − Add the following code to AndroidManifest.xml
<? xml version = "1.0" encoding = "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android" package = "app.tutorialspoint.com.notifyme" > <uses-permission android :name = "android.permission.VIBRATE" /> <application android :allowBackup = "true" android :icon = "@mipmap/ic_launcher" android :label = "@string/app_name" android :roundIcon = "@mipmap/ic_launcher_round" android :supportsRtl = "true" android :theme = "@style/AppTheme" > <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>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −
Click here to download the project code
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