Android mPaint.setColorFilter使用

ColorFilter：颜色过滤器，使用方法可以给图片加上滤镜效果

只对Google已经封装好的方法使用,也可以使用矩阵下来下来在研究

       float[] colorMatrix = {
                2,0,0,0,0,   //red
                0,1,0,0,0,   //green
                0,0,1,0,0,   //blue
                0,0,0,1,0    //alpha
        };

        ColorMatrix cm = new ColorMatrix();
//        //亮度调节
        cm.setScale(1,2,1,1);

//        //饱和度调节0-无色彩， 1- 默认效果， >1饱和度加强
        cm.setSaturation(2);

        //色调调节
        cm.setRotate(0, 45);

        mColorMatrixColorFilter = new ColorMatrixColorFilter(cm);
        mPaint.setColorFilter(mColorMatrixColorFilter);
        canvas.drawBitmap(mBitmap, 100, 0, mPaint);

一些常用的滤镜效果

// 黑白
    public static final float colormatrix_heibai[] = {
            0.8f, 1.6f, 0.2f, 0, -163.9f,
            0.8f, 1.6f, 0.2f, 0, -163.9f,
            0.8f, 1.6f, 0.2f, 0, -163.9f,
            0, 0, 0, 1.0f, 0};
    // 怀旧
    public static final float colormatrix_huajiu[] = {
            0.2f, 0.5f, 0.1f, 0, 40.8f,
            0.2f, 0.5f, 0.1f, 0, 40.8f,
            0.2f, 0.5f, 0.1f, 0, 40.8f,
            0, 0, 0, 1, 0};
    // 哥特
    public static final float colormatrix_gete[] = {
            1.9f, -0.3f, -0.2f, 0, -87.0f,
            -0.2f, 1.7f, -0.1f, 0, -87.0f,
            -0.1f, -0.6f, 2.0f, 0, -87.0f,
            0, 0, 0, 1.0f, 0};
    // 淡雅
    public static final float colormatrix_danya[] = {
            0.6f, 0.3f, 0.1f, 0, 73.3f,
            0.2f, 0.7f, 0.1f, 0, 73.3f,
            0.2f, 0.3f, 0.4f, 0, 73.3f,
            0, 0, 0, 1.0f, 0};
    // 蓝调
    public static final float colormatrix_landiao[] = {
            2.1f, -1.4f, 0.6f, 0.0f, -71.0f,
            -0.3f, 2.0f, -0.3f, 0.0f, -71.0f,
            -1.1f, -0.2f, 2.6f, 0.0f, -71.0f,
            0.0f, 0.0f, 0.0f, 1.0f, 0.0f};
    // 光晕
    public static final float colormatrix_guangyun[] = {
            0.9f, 0, 0, 0, 64.9f,
            0, 0.9f, 0, 0, 64.9f,
            0, 0, 0.9f, 0, 64.9f,
            0, 0, 0, 1.0f, 0};
    // 梦幻
    public static final float colormatrix_menghuan[] = {
            0.8f, 0.3f, 0.1f, 0.0f, 46.5f,
            0.1f, 0.9f, 0.0f, 0.0f, 46.5f,
            0.1f, 0.3f, 0.7f, 0.0f, 46.5f,
            0.0f, 0.0f, 0.0f, 1.0f, 0.0f};
    // 酒红
    public static final float colormatrix_jiuhong[] = {
            1.2f, 0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.9f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.8f, 0.0f, 0.0f,
            0, 0, 0, 1.0f, 0};
    // 胶片
    public static final float colormatrix_fanse[] = {
            -1.0f, 0.0f, 0.0f, 0.0f, 255.0f,
            0.0f, -1.0f, 0.0f, 0.0f, 255.0f,
            0.0f, 0.0f, -1.0f, 0.0f, 255.0f,
            0.0f, 0.0f, 0.0f, 1.0f, 0.0f};
    // 湖光掠影
    public static final float colormatrix_huguang[] = {
            0.8f, 0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.9f, 0.0f, 0.0f,
            0, 0, 0, 1.0f, 0};
    // 褐片
    public static final float colormatrix_hepian[] = {
            1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.8f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.8f, 0.0f, 0.0f,
            0, 0, 0, 1.0f, 0};
    // 复古
    public static final float colormatrix_fugu[] = {
            0.9f, 0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.8f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.5f, 0.0f, 0.0f,
            0, 0, 0, 1.0f, 0};
    // 泛黄
    public static final float colormatrix_huan_huang[] = {
            1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
            0.0f, 0.0f, 0.5f, 0.0f, 0.0f,
            0, 0, 0, 1.0f, 0};
    // 传统
    public static final float colormatrix_chuan_tong[] = {
            1.0f, 0.0f, 0.0f, 0, -10f,
            0.0f, 1.0f, 0.0f, 0, -10f,
            0.0f, 0.0f, 1.0f, 0, -10f,
            0, 0, 0, 1, 0};
    // 胶片2
    public static final float colormatrix_jiao_pian[] = {
            0.71f, 0.2f, 0.0f, 0.0f, 60.0f,
            0.0f, 0.94f, 0.0f, 0.0f, 60.0f,
            0.0f, 0.0f, 0.62f, 0.0f, 60.0f,
            0, 0, 0, 1.0f, 0};

    // 锐色
    public static final float colormatrix_ruise[] = {
            4.8f, -1.0f, -0.1f, 0, -388.4f,
            -0.5f, 4.4f, -0.1f, 0, -388.4f,
            -0.5f, -1.0f, 5.2f, 0, -388.4f,
            0, 0, 0, 1.0f, 0};
    // 清宁
    public static final float colormatrix_qingning[] = {
            0.9f, 0, 0, 0, 0,
            0, 1.1f, 0, 0, 0,
            0, 0, 0.9f, 0, 0,
            0, 0, 0, 1.0f, 0};
    // 浪漫
    public static final float colormatrix_langman[] = {
            0.9f, 0, 0, 0, 63.0f,
            0, 0.9f, 0, 0, 63.0f,
            0, 0, 0.9f, 0, 63.0f,
            0, 0, 0, 1.0f, 0};
    // 夜色
    public static final float colormatrix_yese[] = {
            1.0f, 0.0f, 0.0f, 0.0f, -66.6f,
            0.0f, 1.1f, 0.0f, 0.0f, -66.6f,
            0.0f, 0.0f, 1.0f, 0.0f, -66.6f,
            0.0f, 0.0f, 0.0f, 1.0f, 0.0f};

使用

 imageView.setColorFilter(new ColorMatrixColorFilter(new ColorMatrix(colormatrix_heibai));