Back to main activity from notification-created activity

Question

I\'m trying to implement the behaviour described here, where a notification (or whatever) starts an \"internal\" activity in your app, and then when the user pressed back it

Answer 1

just add this lines to your manifest.

<activity
    android:name=".YourActivity"
    android:launchMode="singleTask"
    android:taskAffinity=""
    android:excludeFromRecents="true">
</activity>

for a complete guideline refer to https://developer.android.com/training/notify-user/navigation

Answer 2

Intent displayIntent = new Intent(getApplicationContext(), TargetActivity.class);

displayIntent.putExtra("extra_id", "extra_key");

TaskStackBuilder stackBuilder = TaskStackBuilder.create(getApplicationContext());
stackBuilder.addParentStack(TargetActivity.class);
stackBuilder.addNextIntent(displayIntent);
stackBuilder.editIntentAt(1).putExtra("extra_id", "extra_key");

PendingIntent contentIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
        getApplicationContext(), "123").setSmallIcon(R.drawable.logo)
        .setContentTitle("GCM Notification")
        .setStyle(new NotificationCompat.BigTextStyle().bigText("Sample")).setContentText("sample text");

mBuilder.setContentIntent(contentIntent);

NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
mNotificationManager.notify(456, mBuilder.build());
stackBuilder.startActivities();

In addition to the above code also provide appropriate parent class names in your AndroidManifest.xml file.

Answer 3

I know I'm late but this may help someone.
Just create an intent for the activity you want to open with the notification. Then set Intent.FLAG_ACTIVITY_NEW_TASK and Intent.FLAG_ACTIVITY_CLEAR_TASK as flags.
Then all you need to do is to create a PendingIntent with your intent as parameter.

This is a code example:

Intent intent = new Intent(this, NotificationActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, 0);