Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.graphics.Bitmap;

import android.graphics.Color;

public class Main {
    public static Bitmap handleImageNegative(Bitmap bm) {
        int width = bm.getWidth();
        int height = bm.getHeight();
        int color;
        int r, g, b, a;
        Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);
        int[] oldPx = new int[width * height];
        int[] newPx = new int[width * height];
        bm.getPixels(oldPx, 0, width, 0, 0, width, height);
        for (int i = 0; i < width * height; i++) {
            color = oldPx[i];
            r = Color.red(color);
            g = Color.green(color);
            b = Color.blue(color);
            a = Color.alpha(color);

            r = 255 - r;
            g = 255 - g;
            b = 255 - b;
            if (r > 255) {
                r = 255;
            } else if (r < 0) {
                r = 0;
            }
            if (g > 255) {
                g = 255;
            } else if (g < 0) {
                g = 0;
            }
            if (b > 255) {
                b = 255;
            } else if (b < 0) {
                b = 0;
            }
            newPx[i] = Color.argb(a, r, g, b);
        }
        bmp.setPixels(newPx, 0, width, 0, 0, width, height);
        return bmp;

    }
}