When/why does my Java singleton instance get destroyed?

Question

I have an android app that is setup to start a Java activity (call it MyJavaActivity), which in turn launches a NativeActivity. When the NativeActivity finishes it returns b

Answer 1

Be sure to read the documentation on the process lifecycle:

http://developer.android.com/guide/topics/fundamentals/processes-and-threads.html#Lifecycle

In this case, whenever your app is in the background (in terms of activities, none of your activities are visible to the user), your process can be killed at any time. If the user later returns to one of your activities, a new process will be created and a new instance of the activity created.