I would like to access notifications on a Android phone by using the NotificationListenerService. I checked lots of tutorials but I can't find where they call the service.
Should I use bindService or startService on MainActivity? How should the intents look like? Can someone show me the syntax of this?
Check out one of the service implementations I am studying:
public class NLService extends NotificationListenerService {
Context context;
@Override
public void onCreate() {
super.onCreate();
context = getApplicationContext();
}
@Override
public void onNotificationPosted(StatusBarNotification sbn) {
String pack = sbn.getPackageName();
String ticker ="";
if(sbn.getNotification().tickerText !=null) {
ticker = sbn.getNotification().tickerText.toString();
}
Bundle extras = sbn.getNotification().extras;
String title = extras.getString("android.title");
String text = extras.getCharSequence("android.text").toString();
int id1 = extras.getInt(Notification.EXTRA_SMALL_ICON);
Bitmap id = sbn.getNotification().largeIcon;
Log.i("Package",pack);
Log.i("Ticker",ticker);
Log.i("Title",title);
Log.i("Text",text);
Intent msgrcv = new Intent("Msg");
msgrcv.putExtra("package", pack);
msgrcv.putExtra("ticker", ticker);
msgrcv.putExtra("title", title);
msgrcv.putExtra("text", text);
if(id != null) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
//id.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
msgrcv.putExtra("icon",byteArray);
}
LocalBroadcastManager.getInstance(context).sendBroadcast(msgrcv);
}
@Override
public void onNotificationRemoved(StatusBarNotification sbn) {
Log.i("Msg","Notification Removed");
}
}
For listening incoming notifications, their is no need to start it explicitly . First define your service in manifest with the following permission -
android.permission.BIND_NOTIFICATION_LISTENER_SERVICE
<service android:name=".MyNotificationListener"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
Another thing to take care is that you must grant the permission either by using the following intent -
Intent intent=new Intent("android.settings.ACTION_NOTIFICATION_LISTENER_SETTINGS");
or by granting the notification access manually.