title: Android LruCache OutOfMemoryException
body: <p>I was doing an android application with a lot of pictures, when I load many pictures in memory,  OutOfMemoryException occurs.</p>
  
  <p>I search the project with google , and most of webpages recommend to use bitmap.recycle() and LruCache, but what I fell puzzled is that when I remove bitmap from LruCache, the removed bitmap still take up memory,how does LruCache reduce memory usage ??</p>