Intent to a specific action when a push notification is pressed.

Question

Do not open specific activity when notified when the application is in the background / does not work

When you click the notification button, the specified activity starts only when you open the application and click on the click. If the application is in the background / does not work and the notification is clicked, the MainActivity application opens. In short, it looks like an application opens, usually after an activity stack, instead of opening the specified action in PendingIntent.

Firebase Instance Identifier Service:

package com.example.tamzid.pushnotification;

 import android.util.Log;
 import com.google.firebase.iid.FirebaseInstanceId;
 import com.google.firebase.iid.FirebaseInstanceIdService;

 public class MyAndroidFirebaseInstanceIdService extends 
FirebaseInstanceIdService {

private static final String TAG = "MyAndroidFCMIIDService";

@Override
public void onTokenRefresh() {
    //Get hold of the registration token
    String refreshedToken = FirebaseInstanceId.getInstance().getToken();
    //Log the token
    Log.d(TAG, "Refreshed token: " + refreshedToken);
}
private void sendRegistrationToServer(String token) {
    //Implement this method if you want to store the token on your server
}
}

Firebase Messaging Service:

 package com.example.tamzid.pushnotification;

 import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.media.RingtoneManager;
 import android.net.Uri;
 import android.support.v4.app.NotificationCompat;
 import android.util.Log;
 import com.google.firebase.messaging.FirebaseMessagingService;
 import com.google.firebase.messaging.RemoteMessage;

 public class MyAndroidFirebaseMsgService extends FirebaseMessagingService     
{
private static final String TAG = "MyAndroidFCMService";
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {
    //Log data to Log Cat
    Log.d(TAG, "From: " + remoteMessage.getFrom());
    Log.d(TAG, "Notification Message Body: " +     
remoteMessage.getNotification().getBody());
    //create notification
    createNotification(remoteMessage.getNotification().getBody());
}

private void createNotification( String messageBody) {
    Intent intent = new Intent( this , ResultActivity. class );
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent resultIntent = PendingIntent.getActivity( this , 0, 
intent,
            PendingIntent.FLAG_ONE_SHOT);

    Uri notificationSoundURI = 
RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder mNotificationBuilder = new 
NotificationCompat.Builder( this)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle("Android Tutorial Point FCM Tutorial")
            .setContentText(messageBody)
            .setAutoCancel( true )
            .setSound(notificationSoundURI)
            .setContentIntent(resultIntent);

    NotificationManager notificationManager =
            (NotificationManager)  
getSystemService(Context.NOTIFICATION_SERVICE);

    notificationManager.notify(0, mNotificationBuilder.build());
 }
}

AndroidManifest.xml

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

<application
    android:name="android.support.multidex.MultiDexApplication"
    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>
    <activity android:name=".ResultActivity"></activity>
    <service android:name=".MyAndroidFirebaseMsgService">
        <intent-filter>
            <action android:name="com.google.firebase.MESSAGING_EVENT" />
        </intent-filter>
    </service>
    <service android:name=".MyAndroidFirebaseInstanceIdService">
        <intent-filter>
            <action android:name="com.google.firebase.INSTANCE_ID_EVENT" 
/>
        </intent-filter>
    </service>

</application>

</manifest>

Answer 1

remoteMessage.getData() remoteMessage.getNotification()

remoteMessage.getNotification(): .

remoteMessage.getData(): .

onMessageReceived(), :

@Override
public void onMessageReceived(RemoteMessage remoteMessage) {

    // Check if message contains a data payload.
    if (remoteMessage.getData().size() > 0) 
    {
        //create notification
        createNotification(remoteMessage.getData().toString());
    }
}