What Is singleTop in Android?

If an instance is not present on top of task then new instance will be created. Using this launch mode you can create multiple instance of the same activity in the same task or in different tasks only if the same instance does not already exist at the top of stack.

What is meant by singleTop in activity instance?

“singleTop” If an instance of the activity already exists at the top of the current task, the system routes the intent to that instance through a call to its onNewIntent() method, rather than creating a new instance of the activity.

What is the difference between singleTop and singleTask?

The ” singleTask ” and ” singleInstance ” modes also differ from each other in only one respect: A ” singleTask ” activity allows other activities to be part of its task. It’s always at the root of its task, but other activities (necessarily ” standard ” and ” singleTop ” activities) can be launched into that task.