Android - Build a notification, TaskStackBuilder.addParentStack not working

I'm trying to launch an activity from a notification like the Android docs explain, but when I open the notification and then press the back button, the HomeActivity (parent) doesn't open, instead the application closes. What am I doing wrong?

    Intent resultIntent = new Intent(context, MatchActivity.class);;
    resultIntent.setFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    
    // Adds the back stack for the Intent (but not the Intent itself)
    stackBuilder.addParentStack(MainActivity.class);
    
    stackBuilder.addNextIntent(resultIntent);

You need to add the parent stack for the activity you're launching, not the parent of it.

Replace:

stackBuilder.addParentStack(MainActivity.class);

with:

stackBuilder.addParentStack( MatchActivity.class );

This assumes that you've defined the parent in your Manifest (API 16+):

<activity android:name=".MatchActivity"
    android:parentActivityName=".MainActivity"
    ... />

If you're developing for under API 16, then you have to define the parent as:

<activity android:name=".MatchActivity">
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value=".MainActivity" />
</activity>

If none of the solutions are working and you are sure that you have followed everything carefully...then you need you uninstall the app and reinstall it. Worked for me!

Intent resultIntent = new Intent(App.getContext(), TargetActivity.class);
Intent backIntent = new Intent(App.getContext(), ParentActivity.class);
backIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
final PendingIntent resultPendingIntent = PendingIntent.getActivities(
                                    App.getContext(), 0, 
               new Intent[]{backIntent, resultIntent}, PendingIntent.FLAG_ONE_SHOT);
mNotifyBuilder.setContentIntent(resultPendingIntent);

this solved my problem with Parent stack on Notification Click

Using TaskStackBuilder didn't solve my problem and works only for Honeycomb and greater. So I take the following solution (please, don't crucify me):

1. Call MainActivity instead of MatchActivity, passing MatchActivity as argument (by Intent).
2. In MainActivity.onCreate, start the MatchActivity if the parameter is available.

New code:

Intent resultIntent = new Intent(context, MainActivity.class) //
        .putExtra(MainActivity.ACTIVITY_EXTRA, MatchActivity.class.getName()) //
        .putExtra("Pass extras to MatchActivity", "if you want! :)");

PendingIntent pendingIntent = PendingIntent.getActivity(context, visitId, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

Notification notification = new NotificationCompat.Builder(context) //
			.setContentIntent(pendingIntent) //
			.build();

On MainActivity:

public static final String ACTIVITY_EXTRA = "activity";

@Override
public void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	if (getIntent().getStringExtra(ACTIVITY_EXTRA) != null) {
		startActivity(new Intent(getIntent()).setClassName(this, getIntent().getStringExtra(ACTIVITY_EXTRA)));
	}
    ...
}

For me the stackBuilder.addParentStack didn't work.

I end up doing this, hope this could helps you.

    Intent intent = new Intent(context, MatchActivity.class);

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    // Adds the back stack for the Intent
    stackBuilder.addNextIntentWithParentStack(new Intent(context, MainActivity.class));
    stackBuilder.addNextIntent(intent);
    PendingIntent pendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

Have you looked in the Android documentation, specifically the Notifications API guide. It describes how to do this in detail.

Notice that if the Activity you start from the notification is not part of the normal Activity flow, then it should not go to the start page of the app; instead, it should go to the Home screen.

You should add this to the MainActivity on the AndroidManifest:

<activity
   android:name=".MainActivity"
   android:allowTaskReparenting="true" />

As stated in other answers, TaskStackBuilder doesn't work for versions below Honeycomb.

My solution was to override the activity's onBackPressed() method.

@Override
public void onBackPressed() {
	NavUtils.navigateUpFromSameTask(this);
}

Obviously if you're planning on finishing the activity in some other manner you will have to handle that as well. (Though I imagine overriding finish() will have some unexpected behaviour).

I had the same problem! Solve:

switch to

PendingIntent resultPendingIntent = 

PendingIntent.getActivity( this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

PendingIntent resultPendingIntent = 

stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);

If you use code generation in your project (like Dagger) the MainActivity.class should be replaced with the MainActivity_.class (or whatever your parent activity name is). Took me a whole day to figure this out. Hope this can save someone's day.

also this can happen if your activiti in mannifest has next launchMode:

<activity android:name=".SecondActivity"
     ...
         android:launchMode="singleInstance"
         android:parentActivityName=".MainActiviy"
    ...
/>