Android 使用颜色矩阵改变图片颜色，透明度，亮度

一、如图
Android 使用颜色矩阵改变图片颜色，透明度，亮度_第1张图片
二、代码实现
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,0,0,0,0,                    0,1,0,0,0,                    0,0,1,0,0,                    0,0,0,1,0,            });            mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));            mCanvas.drawBitmap(mBitmap, mMatrix, mPaint);            mImageView.setImageBitmap(mBitmap);        }    }    private class GreenChangeListener 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[]{                    1,0,0,0,0,                    0,progess/128.0f,0,0,0,                    0,0,1,0,0,                    0,0,0,1,0,            });            mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));            mCanvas.drawBitmap(mBitmap, mMatrix, mPaint);            mImageView.setImageBitmap(mModBitmap);        }    }    private class BlueChangeListener 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[]{                    1,0,0,0,0,                    0,1,0,0,0,                    0,0,progess/128.0f,0,0,                    0,0,0,1,0,            });            mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));            mCanvas.drawBitmap(mBitmap, mMatrix, mPaint);            mImageView.setImageBitmap(mModBitmap);        }    }    private class AlphaChangeListener 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[]{                    1,0,0,0,0,                    0,1,0,0,0,                    0,0,1,0,0,                    0,0,0,progess/50.0f,0,            });            mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));            mCanvas.drawBitmap(mBitmap, mMatrix, mPaint);            mImageView.setImageBitmap(mModBitmap);        }    }    //更改亮度    private class LightChangeListener 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,0,0,0,0,                    0,progess/128.0f,0,0,0,                    0,0,progess/128.0f,0,0,                    0,0,0,1,0,            });            mPaint.setColorFilter(new ColorMatrixColorFilter(mColorMatrix));            mCanvas.drawBitmap(mBitmap, mMatrix, mPaint);            mImageView.setImageBitmap(mModBitmap);        }    }}
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