when I push the push notification, I use something like this to trigger the intention that I want:
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
ctx.startActivity(intent);
This is part of the code taken from the tutorial, but I really did not understand the use of both FLAG_ACTIVITY_NEW_TASK, and FLAG_ACTIVITY_SINGLE_TOP.
From the docs:
FLAG_ACTIVITY_NEW_TASK (added to API level 1):
When using this flag, if the task is already running for the action you are starting now, then the new activity will not be started; instead, the current task will simply be brought to the forefront of the screen with the state of the latter.
FLAG_ACTIVITY_SINGLE_TOP (added to API level 4):
If set, the action will not be launched if it is already running at the top of the history stack.
, , , NEW_TASK , , , ( , ), SINGLE_TOP , (, )?
: , ?