1、 Resources resources = mContext.getResources(); Drawable drawable = resources.getDrawable(R.drawable.a); imageview.setBackground(drawable); 2、 Resources r = this.getContext().getResources(); Inputstream is = r.openRawResource(R.drawable.my_background_image); BitmapDrawable bmpDraw = new BitmapDrawable(is); Bitmap bmp = bmpDraw.getBitmap(); 3、 Bitmap bmp=BitmapFactory.decodeResource(r, R.drawable.icon); Bitmap newb = Bitmap.createBitmap( 300, 300, Config.ARGB_8888 ); 4、 InputStream is = getResources().openRawResource(R.drawable.icon); Bitmap mBitmap = BitmapFactory.decodeStream(is);