Android 使用颜色矩阵改变图片颜色，透明度，亮度

一、如图

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);
        }
    }
}