在一个位图的android转换颜色 [英] Converting colors in a bitmap android

问题描述

我在我的项目为Android 2.3.3一个简单的图像，我想知道的第一个像素的颜色，并与颜色的背景颜色更换的每个像素....我什么都试过像迭代的像素和设置像素的颜色，我什么也没有......例如，与画面：

I have a simple image in my project for android 2.3.3 that i want to know the color of the first pixel and replace every pixel with that color to the background color.... I tried everything like iterating the pixels and setting the color of the pixels and I get nothing...For example,with that picture:

https://www.dropbox.com/s/e9dcq72c9u5o3op/img2.jpg

我想获得这样的结果是： https://www.dropbox.com /s/r9zox7zueekq2xe/img3.jpg

I want to get a result like that: https://www.dropbox.com/s/r9zox7zueekq2xe/img3.jpg

我是为Android一个非常新的开发者，正因为如此对不起我的纳伊夫的问题！

I'm a very new developer for Android, and because of that sorry for my NAIF question!

推荐答案

只需使用ColorFilter实现这一目标。它将替换一种颜色与另一个。工作例如：

Simply use ColorFilter to achieve this. It will replace one colour with another. Working example:

    Paint pnt = new Paint();
    Bitmap myBit = BitmapFactory.decodeFile(pathName);
    Canvas myCanvas = new Canvas(myBit );

    int myColor = myBit.getPixel(0, 0);

    // Set the colour to replace.
    ColorFilter filter = new LightingColorFilter(myColor, Color.WHITE );
    pnt.setColorFilter(filter);

    // Draw onto new bitmap. result Bitmap is newBit
    myCanvas.drawBitmap(myBit,0,0, pnt);

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