Bitmap bitmap=((BitmapDrawable)getResources().getDrawable(R.drawable.pull_down_color)).getBitmap(); Matrix matrix=new Matrix(); matrix.postRotate(180); bitmap=Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); iv_dow.setImageBitmap(bitmap);
原文地址:http://blog.csdn.net/mingyue_1128/article/details/32116027