Android :: Testing Low Memory And OnDestroy

Testing onDestroy.

Q: does using a lot of RAM in one application always lead to onDestroy being called on Activities in other applications?

To try and figure this out I created two separately installed applications. The first just logs its lifecycle transitions and the second allocates a chunk of memory each time you press a button.

What I saw was the second application eventually suffered a fatal Out Of Memory Error force close. The onDestroy method was not called on the first logging application and when I switched back to it onResume was called.

My conclusion is that using a lot of memory in a single application will lead to a fatal Out Of Memory Error without onDestroy first being called on Activities in other applications. The documentation left me expecting an onDestroy on the logging application since the foreground application was trying to allocate more memory.

Does the above sound right? What's a good way to test the onCreate/ onDestroy lifecycle methods as they relate to low memory?