Android: Image cache strategy and memory cache size

Question

I\'m implementing an image cache system for caching downloaded image.

My strategy is based upon two-level cache: Memory-level and disk-level.

My class is very si

Answer 1

I am using one-third of the heap for Image cache.

int memoryInMB = activityManager.getMemoryClass();
long totalAppHeap = memoryInMB * 1024 * 1024;
int runtimeCacheLimit =  (int)totalAppHeap/3;

By the way, about soft reference, in Android Soft references do not work as you expect. There is a platform issue that soft references are collected too early, even when there is plenty of memory free.

Check http://code-gotcha.blogspot.com/2011/09/softreference.html