NotificationListenerService Implementation

Question

I am trying to implement NotificationListnerService which is added in android 4.3 but I am not able to get the notification details.

My code are as below

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
        mBuilder.setSmallIcon(R.drawable.ic_launcher);
        mBuilder.setContentTitle("notification test");
        mBuilder.setContentText("Notification text");
        mBuilder.setAutoCancel(true);
        Intent resultIntent = new Intent(this, ResultActivity.class);
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(ResultActivity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                    0,
                    PendingIntent.FLAG_UPDATE_CURRENT
                );
        mBuilder.setContentIntent(resultPendingIntent);
        NotificationManager manager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
        manager.notify(1, mBuilder.build());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

public class NotificationListenerTesting extends NotificationListenerService{

    public static String TAG = "NotificationListenerTesting";
    //private StatusBarNotification[] mStatusBarNotification;

    @Override
    public void onCreate(){
        super.onCreate();
        Log.d(TAG, "Inside on create");
    }
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }
    @Override
    public void onNotificationPosted(StatusBarNotification sbn) {
        TAG = "onNotificationPosted";
        Log.d(TAG, "id = " + sbn.getId() + "Package Name" + sbn.getPackageName() + 
                "Post time = " + sbn.getPostTime() + "Tag = " + sbn.getTag());
    }
    @Override
    public void onNotificationRemoved(StatusBarNotification sbn) {
        TAG = "onNotificationRemoved";
        Log.d(TAG, "id = " + sbn.getId() + "Package Name" + sbn.getPackageName() + 
                "Post time = " + sbn.getPostTime() + "Tag = " + sbn.getTag());

    }

}

Android manifest file is

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.notificationtest"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.notificationtest.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.example.notificationtest.ResultActivity"></activity>
        <service android:name="com.example.notificationtest.NotificationListenerTesting"
            android:label="notification"
            android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
            <intent-filter>
                <action android:name="android.service.notification.NotificationListenerService"/>
            </intent-filter>
        </service>
    </application>
</manifest>

but after notification click or on notification post NotificationListenerService is not getting called , Whats wrong in this or did I miss somthing ? How to implement it ?

Answer 1

You need to grant access to your app to read notifications: "Settings > Security > Notification access" and check your app.

Answer 2

At least one problem with your code is that your implementation of onBind()

There is no necessity to override this method. But if you must, then at least return the IBinder returned by the superclass.

@Override
public IBinder onBind(Intent intent) {
    return super.onBind(intent);
}

Answer 3

Inside the NotificationListenerService you need a looper to communicate with GUI thread so you can create a broadcast to handle the GUI interaction.

Hope this example will help you.

Answer 4

It might be a bit late. But a few months ago I also struggled with making NotificationListenerService work.

Since then I`ve learned how to implement it and felt like building a implementation tutorial to help others who went through the same as me

If anyone is interested, check the project here: https://github.com/Chagall/notification-listener-service-example

Hope it helps someone who is struggling with it.

Answer 5

I know its too late to answer the question , but as I was not able to find Settings > Sound and notifications -> Notification access, so I directly allow access of notifications to my app by firing this intent:

startActivity(new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS));

Answer 6

I ran into the same problem and have found some clues for that.

NotificationListenerService may not be running unless you call bindService() to start it.

Sometimes it started automatically when you enabled "Notification access" and sometimes it's not.