Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Paint;

public class Main {
    public static Bitmap convertGrayscale(final Bitmap source) {
        final int width = source.getWidth();
        final int height = source.getHeight();
        final Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        final Canvas canvas = new Canvas(output);
        final Paint paint = new Paint();
        final ColorMatrix matrix = new ColorMatrix();
        matrix.setSaturation(0f);
        paint.setColorFilter(new ColorMatrixColorFilter(matrix));
        canvas.drawBitmap(source, 0, 0, paint);
        return output;
    }
}