getBlurredBitmap

getBlurredBitmap.java

public static Bitmap blur(Context context, Bitmap sentBitmap, int radius) {

    if (VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) {
        Bitmap bitmap = sentBitmap.copy(sentBitmap.getConfig(), true);

        final RenderScript rs = RenderScript.create(context);
        final Allocation input = Allocation.createFromBitmap(rs, sentBitmap, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
        final Allocation output = Allocation.createTyped(rs, input.getType());
        final ScriptIntrinsicBlur script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
        script.setRadius(radius); //0.0f ~ 25.0f
        script.setInput(input);
        script.forEach(output);
        output.copyTo(bitmap);
        return bitmap;
    }
}