Convert Bitmap Image to Transparent - Android Graphics

Android examples for Graphics:Bitmap Effect

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Description

Convert Bitmap Image to Transparent

Demo Code


//package com.java2s;

import android.graphics.Bitmap;

import android.graphics.Color;

public class Main {
    private static void toTransparent(Bitmap src) {
        int[] pixels = new int[src.getHeight() * src.getWidth()];
        src.getPixels(pixels, 0, src.getWidth(), 0, 0, src.getWidth(),
                src.getHeight());//from  w w w  .  j a v  a 2 s. c  o  m
        final int length = pixels.length;
        int transparent = Color.parseColor("#00000000");
        for (int i = 0; i < length; i++) {
            if (pixels[i] == Color.WHITE)
                pixels[i] = transparent;
        }
        src.setPixels(pixels, 0, src.getWidth(), 0, 0, src.getWidth(),
                src.getHeight());
    }
}

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