How to clear the Android Stack of activities?
This should be bitwise OR'd or you end up overwriting the earlier flag.
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);Like so:
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
In your login activity, override the back button, so it hides your app instead of finishing the activity:
@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { moveTaskToBack(true); return true; } return super.onKeyDown(keyCode, event);}Also be sure to set android:alwaysRetainTaskState="true" on the root activity, so Android doesn't clear your stack (including the login activity) after 30min of inactivity from user.
Then just call finish() when there is a successful login.
As per Wakka in Removing an activity from the history stack...
Add android:noHistory="true" attribute to your <activity> in the AndroidManifest.xml like this:
<activity android:name=".MyActivity" android:noHistory="true"></activity>