largeHeap=true manifest tag not working?

Question

I´m developing a very memory-consuming app and want to use the largeHeap-Tag, which should give the application a bit more memory. Whatever I set this tag in AndroidManifest

Answer 1

Indeed, the large heap will be the same as normal heap until your app needs more memory for a task. Your VM will display such messages on console:

06-30 15:38:14.770: INFO/dalvikvm-heap(9075): Grow heap (frag case) to 42.365MB for 6152016-byte allocation
06-30 15:38:16.680: INFO/dalvikvm-heap(9075): Grow heap (frag case) to 39.739MB for 3517456-byte allocation

Answer 2

Use ActivityManager.getMemoryClass() and ActivityManager.getLargeMemoryClass() to verify the approximated values assigned to your app.