显示的图片可超过1M
且不会出现OOM
ImageView jpgView = (ImageView)findViewById(R.id.jpgview);
String myJpgPath = "/sdcard/DSC_0001.JPG";
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
Bitmap bm = BitmapFactory.decodeFile(myJpgPath, options);
jpgView.setImageBitmap(bm);