本文共 1908 字，大约阅读时间需要 6 分钟。

代码：

package com.color;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.widget.ImageView;public class ColorView extends ImageView {	private Paint myPaint = null;	private Bitmap bitmap = null;	private int width, height;	private int[] oldPixels;	private int[] newPixels;	private int color, color2;	private int pixelsR, pixelsG, pixelsB, pixelsA, pixelsR2, pixelsG2,			pixelsB2;	public ColorView(Context context, AttributeSet attrs) {		super(context, attrs);		bitmap = BitmapFactory.decodeResource(context.getResources(),				R.drawable.ww);		width = bitmap.getWidth();		height = bitmap.getHeight();		oldPixels = new int[width * height];		newPixels = new int[width * height];		invalidate();	}	@Override	protected void onDraw(Canvas canvas) {		super.onDraw(canvas);		// 获取像素		bitmap.getPixels(oldPixels, 0, width, 0, 0, width, height);		for (int i = 1; i < height * width; i++) {			color = oldPixels[i];			// 获取RGB分量			pixelsA = Color.alpha(color);			pixelsR = Color.red(color);			pixelsG = Color.green(color);			pixelsB = Color.blue(color);			//R			int pixel = pixelsR * 128 / (pixelsG + pixelsB + 1);			if (pixel < 0) {				pixel = 0;			} else if (pixel > 255) {				pixel = 255;			}			pixelsR = pixel;			//G			pixel = pixelsG * 128 / (pixelsB + pixelsR + 1);			if (pixel < 0){				pixel = 0;			}			else if (pixel > 255){				pixel = 255;			}			pixelsG = pixel;			//B			pixel = pixelsB * 128 / (pixelsR + pixelsG + 1);			if (pixel < 0){				pixel = 0;			}			else if (pixel > 255){				pixel = 255;			}			pixelsB = pixel;			// 根据新的RGB生成新像素			newPixels[i] = Color.argb(pixelsA, pixelsR, pixelsG, pixelsB);		}		// 根据新像素生成新图片		bitmap.setPixels(newPixels, 0, width, 0, 0, width, height);		canvas.drawBitmap(bitmap, 0, 0, myPaint);	}}

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