Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;

import android.graphics.Bitmap;

import android.renderscript.Allocation;
import android.renderscript.Element;
import android.renderscript.RenderScript;
import android.renderscript.ScriptIntrinsicBlur;

public class Main {
    public static Bitmap blurBitmap(Context context, Bitmap bitmap, float blur) {
        Bitmap bitmapCopy = bitmap.copy(bitmap.getConfig(), false);
        //Let's create an empty bitmap with the same size of the bitmap we want to blur
        Bitmap outBitmap = (Bitmap.createBitmap(bitmapCopy.getWidth(), bitmapCopy.getHeight(),
                Bitmap.Config.ARGB_8888));

        //Instantiate a new Renderscript
        RenderScript rs = RenderScript.create(context);

        //Create an Intrinsic Blur Script using the Renderscript
        ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));

        //Create the in/out Allocations with the Renderscript and the in/out bitmaps
        Allocation allIn = Allocation.createFromBitmap(rs, bitmapCopy);
        Allocation allOut = Allocation.createFromBitmap(rs, outBitmap);

        //Set the radius of the blur
        blurScript.setRadius(blur);

        //Perform the Renderscript
        blurScript.setInput(allIn);
        blurScript.forEach(allOut);

        //Copy the final bitmap created by the out Allocation to the outBitmap
        allOut.copyTo(outBitmap);

        bitmapCopy.recycle();
        //After finishing everything, we destroy the Renderscript.
        rs.destroy();
        return outBitmap;
    }
}