I am trying to replace the built in calendar reminder's notification with a custom built notification using the NotificationManager.
I have added a BroadCastReceiver, that intercepts the calendar reminder's notification, as such:
<receiver
android:name=".receivers.CalendarNotificationBroadcastReceiver">
<intent-filter>
<action android:name="android.intent.action.EVENT_REMINDER"/>
<data android:scheme="content"/>
<data android:host="com.android.calendar"/>
</intent-filter>
</receiver>
The intent is passed on to the onReceive method as follows:
Q1: How can I use the ContentResolver API in order to find information about the event that triggered the notification (I need the TITLE field for example for building the new notification)?
Q2: How can I cancel the intent so that the calendar event's reminder notification does not get triggered? I've tried following the recomendations in this post, but to no avail: How to cancel this repeating alarm? Also, I have tried (with no success):
PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT).cancel();
EDIT ******************
After following Ovidiu Latcu's proposal, I have provided an implementation for the NotificationListenerService that also has a BroadcastReceiver for the new notifications
AndroidManifest
<service android:name=".service.CalendarNotificationListenerService"
android:label="@string/app_name"
android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE">
<intent-filter>
<action android:name="android.service.notification.NotificationListenerService" />
</intent-filter>
</service>
NotificationListenerService
@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR2)
/**
* Due to an android bug: https://stackoverflow.com/questions/17911883/cannot-get-the-notificationlistenerservice-class-to-work
* This class' name should be changed before each debug use, because if not, onReceive will never get called.
*/
public class CalendarNotificationListenerService extends NotificationListenerService {
private String TAG = this.getClass().getSimpleName();
private CalendarNotificationBroadcastReceiver receiver;
@Override
public void onCreate() {
Log.i(TAG,"********** Service is created");
super.onCreate();
receiver = new CalendarNotificationBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter("android.intent.action.EVENT_REMINDER");
intentFilter.addDataScheme("content");
registerReceiver(receiver, intentFilter);
}
@Override
public void onDestroy() {
Log.i(TAG,"********** Service is destroyed");
super.onDestroy();
unregisterReceiver(receiver);
}
@Override
public IBinder onBind(Intent mIntent) {
IBinder mIBinder = super.onBind(mIntent);
Log.i(TAG, "********** onBind");
return mIBinder;
}
@Override
public boolean onUnbind(Intent mIntent) {
boolean mOnUnbind = super.onUnbind(mIntent);
Log.i(TAG, "********** onUnbind");
return mOnUnbind;
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
@Override
public void onNotificationPosted(StatusBarNotification sbn) {
Log.i(TAG,"********** onNotificationPosted");
Log.i(TAG,"ID :" + sbn.getId() + "\t" + sbn.getNotification().tickerText + "\t" + sbn.getPackageName());
Notification currentNotification = sbn.getNotification();
String notificationTitle = (String) sbn.getNotification().extras.get("android.title");
if(notificationTitle == null || !notificationTitle.startsWith("CALLERQ:")){
return;
}
//Seem to only be able to cancel a notification after it is posted.
CalendarNotificationListenerService.this.cancelNotification(sbn.getKey());
Intent i = new Intent("com.enginizer.NOTIFICATION_LISTENER_EXAMPLE");
i.putExtra("notification_event","onNotificationPosted :" + sbn.getPackageName() + "\n");
sendBroadcast(i);
}
@Override
public void onNotificationRemoved(StatusBarNotification sbn) {
Log.i(TAG,"********** onNOtificationRemoved");
Log.i(TAG,"ID :" + sbn.getId() + "\t" + sbn.getNotification().tickerText +"\t" + sbn.getPackageName());
Intent i = new Intent("com.enginizer.NOTIFICATION_LISTENER_EXAMPLE");
i.putExtra("notification_event","onNotificationRemoved :" + sbn.getPackageName() + "\n");
sendBroadcast(i);
}
class CalendarNotificationBroadcastReceiver extends BroadcastReceiver {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG, "********** Notification received");
String intentAction = intent.getAction();
Log.i(TAG, "********** " + intentAction);
intent.getBundleExtra(CalendarContract.EXTRA_CUSTOM_APP_URI);
ContentResolver contentResolver = context.getContentResolver();
//This throws an java.lang.IllegalArgumentException
Cursor cursor = contentResolver.query(intent.getData(), new String[]{CalendarContract.Events.DESCRIPTION}, null, null, null);
CalendarNotificationListenerService.this.cancelAllNotifications();
}
}
@Override
public void onListenerConnected() {
Log.i(TAG,"********** Listener connected");
super.onListenerConnected();
}
}
For what was answered in Q1, I am trying to query the calendar for the event noted in the mData field. When doing so, I receive the following:
java.lang.IllegalArgumentException: Unknown URL content://com.android.calendar/1491653055193
For Q2, I am not able to cancel the notification from within the onReceive method since I was not able to find it on the intent. I am only able to cancel the notification in the onNotificationPosted method, which is later than expected.
Should it really be so tangled to cancel a calendar reminder notification and replace it with a custom one?
