Android开发中使用颜色矩阵改变图片颜色，透明度及亮度的方法

public class ColorImageActivity extends Activity {
 private ImageView mImageView;
 private SeekBar mSBRed,mSBGreen,mSBBlue,mSBAlpha,mSBLight;
 //修改后的图片
 private Bitmap mModBitmap;
 //画布
 private Canvas mCanvas;
 //画笔
 private Paint mPaint;
 //颜色矩阵
 private ColorMatrix mColorMatrix;
 //图片矩阵
 private Matrix mMatrix;
 //原图
 private Bitmap mBitmap;
 @Override
 protected void onCreate(Bundle savedInstanceStatE) {
  super.onCreate(savedInstanceStatE);
  setContentView(R.layout.activity_image_color);
  initViews();
 }
 private void initViews() {
  mImageView = (ImageView) findViewById(R.id.imageView1);
  mSBRed = (SeekBar) findViewById(R.id.seekBar1);
  mSBGreen = (SeekBar) findViewById(R.id.seekBar2);
  mSBBlue = (SeekBar) findViewById(R.id.seekBar3);
  mSBAlpha = (SeekBar) findViewById(R.id.seekBar4);
  mSBLight = (SeekBar) findViewById(R.id.seekBar5);
  mSBRed.setOnSeekBarchangelistener(new Redchangelistener());
  mSBGreen.setOnSeekBarchangelistener(new Greenchangelistener());
  mSBBlue.setOnSeekBarchangelistener(new Bluechangelistener());
  mSBAlpha.setOnSeekBarchangelistener(new Alphachangelistener());
  mSBLight.setOnSeekBarchangelistener(new Lightchangelistener());
  //创建原图
  mBitmap = BitmapFactory.decoderesource(getresources(),R.drawable.mm0);
  //创建修改的图
  mModBitmap = Bitmap.createBitmap(mBitmap.getWidth()+20,mBitmap.getHeight()+20,mBitmap.getConfig());
  mCanvas = new Canvas(mModBitmap);
  mPaint = new Paint();
  mPaint.setColor(Color.bLACK);
  mPaint.setAntiAlias(true);
  mMatrix = new Matrix();
  mColorMatrix = new ColorMatrix();
  mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatriX));
  //绘制原图
  mCanvas.drawBitmap(mBitmap,mMatrix,mPaint);
  mImageView.setImageBitmap(mModBitmap);
 }
 private class Redchangelistener implements OnSeekBarchangelistener{
  @Override
  public void onProgressChanged(SeekBar seekBar,int progress,Boolean fromUser) {
  }
  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
  }
  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   int progess = seekBar.getProgress();
   mColorMatrix.set(new float[]{
     progess /128.0f,1,});
   mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatriX));
   mCanvas.drawBitmap(mBitmap,mPaint);
   mImageView.setImageBitmap(mBitmap);
  }
 }
 private class Greenchangelistener implements OnSeekBarchangelistener{
  @Override
  public void onProgressChanged(SeekBar seekBar,Boolean fromUser) {
  }
  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
  }
  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   int progess = seekBar.getProgress();
   mColorMatrix.set(new float[]{
     1,progess/128.0f,mPaint);
   mImageView.setImageBitmap(mModBitmap);
  }
 }
 private class Bluechangelistener implements OnSeekBarchangelistener{
  @Override
  public void onProgressChanged(SeekBar seekBar,mPaint);
   mImageView.setImageBitmap(mModBitmap);
  }
 }
 private class Alphachangelistener implements OnSeekBarchangelistener{
  @Override
  public void onProgressChanged(SeekBar seekBar,progess/50.0f,mPaint);
   mImageView.setImageBitmap(mModBitmap);
  }
 }
 //更改亮度
 private class Lightchangelistener implements OnSeekBarchangelistener{
  @Override
  public void onProgressChanged(SeekBar seekBar,Boolean fromUser) {
  }
  @Override
  public void onStartTrackingTouch(SeekBar seekBar) {
  }
  @Override
  public void onStopTrackingTouch(SeekBar seekBar) {
   int progess = seekBar.getProgress();
   mColorMatrix.set(new float[]{
     progess/128.0f,mPaint);
   mImageView.setImageBitmap(mModBitmap);
  }
 }
}