android - How we can use onNewIntent() in any Activity?

Question

What is the real use of onNewIntent() in the activity life cycle and how do we use this method?

Answer 1

This is called for activities that set launchMode to "singleTop" in their package, or if a client used the FLAG_ACTIVITY_SINGLE_TOP flag when calling startActivity(Intent).

If you set to single top, the activity will not be launched if it is already running at the top of the history stack. It will not relaunch just show from stack.