How to be informed about the events of limited resources

Is there a listener that you can attach to your application and receive messages when the unit is low on resources?

From time to time my application gets a little loading icon in the middle that makes the whole device freeze for a few seconds and then continue as normal.

LowMemoryListener would fail anyway.  It gives you the opportunity to free objects that you don't need really.  But until the garbage collector runs, will always be the objects of place, and it's the garbage collector runs it causing you problems.

I found in the past that you can get the quick wins to optimize the use of your Bitmaps.  For example, you can load at startup of the application and use the loaded single copy with your application, as it is possible to have two or more BitmapFields using the same Bitmap.  Loading of these only once can translate into a great saving on memory usage and garbage collection works, all the more that they need to get contiguous bytes (at least that is my understanding).  You can do similar things to files, say its workload once bytes and use bytes as a ByteArrayInputStream to the player.  So by sharing resources and do not recreate these you significantly reduce your memory footprint and improve performance.

Edit: Just made some changes to improve readability.

Tags: BlackBerry Developers

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