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.Color;

public class Main {
    public static int getDominantColor(Bitmap bitmap) {
        if (null == bitmap)
            return Color.TRANSPARENT;

        int redBucket = 0;
        int greenBucket = 0;
        int blueBucket = 0;
        int alphaBucket = 0;

        boolean hasAlpha = bitmap.hasAlpha();
        int pixelCount = bitmap.getWidth() * bitmap.getHeight();
        int[] pixels = new int[pixelCount];
        bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());

        for (int y = 0, h = bitmap.getHeight(); y < h; y++) {
            for (int x = 0, w = bitmap.getWidth(); x < w; x++) {
                int color = pixels[x + y * w]; // x + y * barHeight
                redBucket += (color >> 16) & 0xFF; // Color.red
                greenBucket += (color >> 8) & 0xFF; // Color.greed
                blueBucket += (color & 0xFF); // Color.blue
                if (hasAlpha)
                    alphaBucket += (color >>> 24); // Color.alpha
            }
        }

        return Color.argb((hasAlpha) ? (alphaBucket / pixelCount) : 255, redBucket / pixelCount,
                greenBucket / pixelCount, blueBucket / pixelCount);
    }
}