Android - Build a notification, TaskStackBuilder.addParentStack not working

Question

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);

Answer 1

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>

Answer 2

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!

Answer 3

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

Answer 4

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)));
    }
    ...
}