android 圖片處理OOM問題處理方法

http://stackoverflow.com/questions/19678665/bitmapfactory-decodefile-out-of-memory-with-images-2400x2400

http://stackoverflow.com/questions/15377186/decode-file-from-sdcard-android-to-avoid-out-of-memory-error-due-to-large-bitmap

http://www.cnblogs.com/hellope/archive/2011/08/23/2150400.html