Bitmap 图片缩放

缩放图片

Bitmap bitmap = BitmapFactory.decodeStream(is);Matrix matrix = new Matrix();int width = bitmap.getWidth();int height = bitmap.getHeight();**matrix.postScale(2, 2);//设置缩放级别**Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,        width, height, matrix, true);