1.染色
关于染色部分，可以分别设置调整画笔的大小和画笔的透明度，画笔我已经设置了模糊效果。画笔的特效可以调整下面一行代码：
为了不明显看出画笔的边缘，就像你的图2所示，可以调整画笔透明度为10，画笔大小为32.这样多画一两次，方能达到你说的效果。
2.橡皮擦
橡皮擦的实现我用了两个canvas,一个临时的，一个是作用在ImageTouchView上显示的，代码里面有注释，这里不再详细介绍。
3.功能展示：
原图：
画笔设置界面：
（1）画笔大小为32，透明度为255（不透明）。如下图：
（2）画笔大小为32，透明度为10，如下图：
融合的效果跟画笔的透明度有关系，也跟背景图片的相应区域颜色有关，所以透明度的值自行调整得出满意效果。
（3）擦除
擦除前图像：
部分擦除后：
4.Bitmap处理相关的类BitmapUtils：
package com.jiangjie.utils;import java.io.ByteArrayOutputStream;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import android.content.Context;import android.content.res.Resources;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Matrix;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.Bitmap.Config;public class BitmapUtils {/*** 缩放图片*/public static void bitmapScale(Bitmap baseBitmap, Paint paint, float x, float y) {// 因为要将图片放大，，所以要根据放大的尺寸重新创建BitmapBitmap scaleBitmap = Bitmap.createBitmap((int) (baseBitmap.getWidth() * x),(int) (baseBitmap.getHeight() * y), baseBitmap.getConfig());Canvas canvas = new Canvas(scaleBitmap);// 初始化Matrix对象Matrix matrix = new Matrix();// 根据传入的参数设置缩放比例matrix.setScale(x, y);// 根据缩放比例，把图片draw到Canvas上canvas.drawBitmap(baseBitmap, matrix,paint);}/*** 图片旋转*/public static void bitmapRotate(Bitmap baseBitmap, Paint paint,float degrees) {// 创建一个和原图一样大小的图片Bitmap afterBitmap = Bitmap.createBitmap(baseBitmap.getWidth(),baseBitmap.getHeight(), baseBitmap.getConfig());Canvas canvas = new Canvas(afterBitmap);Matrix matrix = new Matrix();// 根据原图的中心位置旋转matrix.setRotate(degrees, baseBitmap.getWidth() / 2,baseBitmap.getHeight() / 2);canvas.drawBitmap(baseBitmap, matrix, paint);}/*** 图片移动*/public static void bitmapTranslate(Bitmap baseBitmap, Paint paint, float dx, float dy) {// 需要根据移动的距离来创建图片的拷贝图大小Bitmap afterBitmap = Bitmap.createBitmap((int) (baseBitmap.getWidth() + dx),(int) (baseBitmap.getHeight() + dy), baseBitmap.getConfig());Canvas canvas = new Canvas(afterBitmap);Matrix matrix = new Matrix();// 设置移动的距离matrix.setTranslate(dx, dy);canvas.drawBitmap(baseBitmap, matrix, paint);}/*** 倾斜图片*/public static void bitmapSkew(Bitmap baseBitmap, Paint paint, float dx, float dy) {// 根据图片的倾斜比例，计算变换后图片的大小，Bitmap afterBitmap = Bitmap.createBitmap(baseBitmap.getWidth()+ (int) (baseBitmap.getWidth() * dx), baseBitmap.getHeight()+ (int) (baseBitmap.getHeight() * dy), baseBitmap.getConfig());Canvas canvas = new Canvas(afterBitmap);Matrix matrix = new Matrix();// 设置图片倾斜的比例matrix.setSkew(dx, dy);canvas.drawBitmap(baseBitmap, matrix, paint);}public static Bitmap decodeFromResource(Context context, int id) {Resources res = context.getResources();Bitmap bitmap = BitmapFactory.decodeResource(res,id).copy(Bitmap.Config.ARGB_8888, true);return bitmap;}/*** 保存图片到SD卡*/public static void saveToSdCard(String path, Bitmap bitmap) {if (null != bitmap && null != path && !path.equalsIgnoreCase("")) {try {File file = new File(path);FileOutputStream outputStream = null;//创建文件，并写入内容outputStream = new FileOutputStream(new File(path), true);bitmap.compress(Bitmap.CompressFormat.PNG, 30, outputStream);outputStream.flush();outputStream.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}/*** 复制bitmap*/public static Bitmap duplicateBitmap(Bitmap bmpSrc, int width, int height) {if (null == bmpSrc) {return null;}int bmpSrcWidth = bmpSrc.getWidth();int bmpSrcHeight = bmpSrc.getHeight();Bitmap bmpDest = Bitmap.createBitmap(width, height, Config.ARGB_8888);if (null != bmpDest) {Canvas canvas = new Canvas(bmpDest);Rect viewRect = new Rect();final Rect rect = new Rect(0, 0, bmpSrcWidth, bmpSrcHeight);if (bmpSrcWidth <= width && bmpSrcHeight <= height) {viewRect.set(rect);} else if (bmpSrcHeight > height && bmpSrcWidth <= width) {viewRect.set(0, 0, bmpSrcWidth, height);} else if (bmpSrcHeight <= height && bmpSrcWidth > width) {viewRect.set(0, 0, width, bmpSrcWidth);} else if (bmpSrcHeight > height && bmpSrcWidth > width) {viewRect.set(0, 0, width, height);}canvas.drawBitmap(bmpSrc, rect, viewRect, null);}return bmpDest;}/*** 复制bitmap*/public static Bitmap duplicateBitmap(Bitmap bmpSrc) {if (null == bmpSrc) {return null;}int bmpSrcWidth = bmpSrc.getWidth();int bmpSrcHeight = bmpSrc.getHeight();Bitmap bmpDest = Bitmap.createBitmap(bmpSrcWidth, bmpSrcHeight,Config.ARGB_8888);if (null != bmpDest) {Canvas canvas = new Canvas(bmpDest);final Rect rect = new Rect(0, 0, bmpSrcWidth, bmpSrcHeight);canvas.drawBitmap(bmpSrc, rect, rect, null);}return bmpDest;}/*** bitmap转字节码*/public static byte[] bitampToByteArray(Bitmap bitmap) {byte[] array = null;try {if (null != bitmap) {ByteArrayOutputStream os = new ByteArrayOutputStream();bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);array = os.toByteArray();os.close();}} catch (IOException e) {e.printStackTrace();}return array;}/*** 字节码转bitmap*/public static Bitmap byteArrayToBitmap(byte[] array) {if (null == array) {return null;}return BitmapFactory.decodeByteArray(array, 0, array.length);}}
5。图像旋转，缩放，橡皮擦和染色功能如下：
你曾经说，你曾经说。走在爱的旅途，我们的脚步多么轻松……
