在Android中尝试模糊图像的问题

RenderScript rs = RenderScript.create(context);

Bitmap inputBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.input_image);

Allocation input = Allocation.createFromBitmap(rs, inputBitmap);
Allocation output = Allocation.createTyped(rs, input.getType());

ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

float blurRadius = 25f;
blurScript.setRadius(blurRadius);

blurScript.setInput(input);
blurScript.forEach(output);

Bitmap outputBitmap = Bitmap.createBitmap(inputBitmap.getWidth(), inputBitmap.getHeight(), inputBitmap.getConfig());
output.copyTo(outputBitmap);

input.destroy();
output.destroy();
blurScript.destroy();
rs.destroy();