Is it possible to tell the application not to delete activities from memory?

Question

Java

Theoretically, activities can exist for some time, but their existence is not guaranteed by the system, so when they are lost (destroyed to clear memory for other needs) it is impossible to predict and all this will lead to the application crashing at the most unpredictable moment.

Is it possible to tell the application not to delete activities from memory?

Answer 1

You can't, and you don't need to. In order to return an Activity to the state in which you closed it, there are methods onSaveInstanceState() and onRestoreInstanceState()
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