Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2012 Andrew Neal
 * Copyright (C) 2014 The CyanogenMod Project
 * Licensed under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law
 * or agreed to in writing, software distributed under the License is
 * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */

import android.graphics.Bitmap;

public class Main {
    public static Bitmap blackAndWhited(Bitmap in) {
        int width = in.getWidth();
        int height = in.getHeight();

        int[] pixels = new int[width * height];
        in.getPixels(pixels, 0, width, 0, 0, width, height);
        int alpha = 0xFF << 24;
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                int grey = pixels[width * i + j];
                int red = ((grey & 0x00FF0000) >> 16);
                int green = ((grey & 0x0000FF00) >> 8);
                int blue = (grey & 0x000000FF);
                grey = (int) (red * 0.3 + green * 0.59 + blue * 0.11);
                grey = alpha | (grey << 16) | (grey << 8) | grey;
                pixels[width * i + j] = grey;
            }
        }
        Bitmap newBmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
        newBmp.setPixels(pixels, 0, width, 0, 0, width, height);
        return newBmp;
    }
}