I'm using Android 2.2 and, when I'm trying to return from second activity to first activity by pressing a back button, the app crashes and produces a logcat error:
byte external allocation too large for this process, VM won't let us allocate bytes
Can anyone help me?
It seems you are running out-of-memory, so the activity cannot reinit. Please check this link for tracking you memory in Android - http://android-developers.blogspot.com/2011/03/memory-analysis-for-android.html
However, if you'll paste some more logs and code - it can help to determine exact problem.
Good luck