An explanation was given here: http://stackoverflow.com/questions/5084983/memory-usage-between-android-2-2-and-2-3
On Feb 21, 5:21 pm, haplo13 <[email protected]> wrote: > Hello, > I am developing an app that contains many images. I have noticed that > the memory usage of my app is quite a bit higher in Android 2.3 than > in Android 2.2 - ultimately resulting in OutOfMemory errors while > loading bitmaps. In researching this, I logged the result of > Debug.getNativeHeapAllocatedSize() in the onResume of the first > activity. In Android 2.2, this outputs 5MB. In Android 2.3, this > outputs 17MB. > > I created a sample application to try to further narrow this down. > The sample app has 2 activities: the first has a small image and a > button to launch the second activity; the second activity has several > large images in a ScrollView. You can download the sample > here:http://dl.dropbox.com/u/21709517/MemoryUsageExample.zip > When running this sample, Debug.getNativeHeapAllocatedSize() reports > 3MB allocated after starting the first activity in both 2.2 and 2.3. > After launching the second activity, Android 2.2 still reports 3MB > allocated while Android 2.3 reports 17MB allocated. Running "adb > shell dumpsys meminfo test.example" shows the same types of results. > > Why is there such a dramatic difference between Android 2.2 and 2.3? > And more importantly, what should I be doing differently to prevent > using so much memory on Android 2.3? > > Jeff -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
