Color to Alpha - Android Graphics

Android examples for Graphics:Color Alpha

  1. HOME
  2. Android
  3. Graphics
  4. Color Alpha

Description

Color to Alpha

Demo Code


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

public class Main {

    public static int toAlpha(int color, int alpha) {
        int r = getRed(color);
        int g = getGreen(color);
        int b = getBlue(color);
        return Color.argb(alpha, r, g, b);
    }//w  w w . j a  v  a 2  s.  c om

    public static int getRed(int color) {
        int red = (color & 0xff0000) >> 16;
        return red;
    }

    public static int getGreen(int color) {
        int green = (color & 0x00ff00) >> 8;
        return green;
    }

    public static int getBlue(int color) {
        int blue = (color & 0x0000ff);
        return blue;
    }
}

Related Tutorials