本文主要介绍Android 图片的颜色处理的知识，这里附上一个示例帮助大家学习理解这中实现方法，有需要的小伙伴可以参考下
仿造美图秀秀移动鼠标调整seekbar，调整图片的颜色
项目布局如下：
效果如下：
逻辑部分代码如下：
package com.wuyudong.resize; import android.os.Bundle; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Matrix; import android.graphics.Paint; import android.view.Menu; import android.widget.ImageView; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; public class MainActivity extends Activity { private ImageView iv1; private SeekBar sb1, sb2, sb3; private Bitmap alterBitmap; private Canvas canvas; private Paint paint; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); iv1 = (ImageView) findViewById(R.id.iv); // 设置第一个bitmap的图标 final Bitmap bitmap1 = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher); // 新建一个bitmap alterBitmap = Bitmap.createBitmap(bitmap1.getWidth(), bitmap1.getHeight(), bitmap1.getConfig()); // 以alterBitmap为模板新建画布 canvas = new Canvas(alterBitmap); // 新建画笔并设置属性 paint = new Paint(); paint.setColor(Color.BLACK); // 新建矩阵 final Matrix matrix = new Matrix(); // 指定颜色矩阵 final ColorMatrix cm = new ColorMatrix(); /** * Set this colormatrix to identity: * [ 1 0 0 0 0 - red vector * 0 1 0 0 0 - green vector * 0 0 1 0 0 - blue vector * 0 0 0 1 0 ] - alpha vector */ paint.setColorFilter(new ColorMatrixColorFilter(cm)); paint.setAntiAlias(true); // 设置画布 canvas.drawBitmap(bitmap1, matrix, paint); iv1.setImageBitmap(alterBitmap); sb1 = (SeekBar) findViewById(R.id.sb1); sb2 = (SeekBar) findViewById(R.id.sb2); sb3 = (SeekBar) findViewById(R.id.sb3); sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { int progress = seekBar.getProgress(); cm.set(new float[]{ progress/128.0f, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, }); paint.setColorFilter(new ColorMatrixColorFilter(cm)); canvas.drawBitmap(bitmap1, matrix, paint); iv1.setImageBitmap(alterBitmap); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } }); sb2.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { int progress = seekBar.getProgress(); cm.set(new float[]{ progress/128.0f, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, progress/128.0f, 0, 0, 0, 0, 0, 1, 0, }); paint.setColorFilter(new ColorMatrixColorFilter(cm)); canvas.drawBitmap(bitmap1, matrix, paint); iv1.setImageBitmap(alterBitmap); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } }); sb3.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { int progress = seekBar.getProgress(); cm.set(new float[]{ 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, progress/128.0f, 0, 0, 0, 0, 0, 1, 0, }); paint.setColorFilter(new ColorMatrixColorFilter(cm)); canvas.drawBitmap(bitmap1, matrix, paint); iv1.setImageBitmap(alterBitmap); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { } }); } } 运行效果：
出处：http://www.cnblogs.com/wuyudong/
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