我有一个色相效果code，我想用它与搜索栏中，效果可以使用适用 applyHueFilter（位图，级）我想，当我移动搜索栏圈向右色调滤镜增加，当我移动到左侧的色彩过滤器减少（删除）。

I have a hue effect code and I want to use it with a seek bar, the effect can be applied using applyHueFilter( bitmap, level ) I want when i move the circle of the seekbar to the right the hue filter increases and when i move it to the left the hue filter decreases ( removes ) ..

public static Bitmap applyHueFilter(Bitmap source, int level) {
    // get image size
    int width = source.getWidth();
    int height = source.getHeight();
    int[] pixels = new int[width * height];
    float[] HSV = new float[3];
    // get pixel array from source
    source.getPixels(pixels, 0, width, 0, 0, width, height);

    int index = 0;
    // iteration through pixels
    for(int y = 0; y < height; ++y) {
        for(int x = 0; x < width; ++x) {
            // get current index in 2D-matrix
            index = y * width + x;
            // convert to HSV
            Color.colorToHSV(pixels[index], HSV);
            // increase Saturation level
            HSV[1] *= level;
            HSV[1] = (float) Math.max(0.0, Math.min(HSV[1], 1.0));
            // take color back
            pixels[index] |= Color.HSVToColor(HSV);
        }
    }
    // output bitmap                
    myBitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return myBitmap;        
}

当时的即时通讯使用该 applyHueFilter 在 progressChanged ..

    hueSB.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

        public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            applyHueFilter(myBitmap, 100);
        }

        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        public void onStopTrackingTouch(SeekBar seekBar) {

        }

    });

会发生什么情况是，当我移动搜索栏到正确的色调applys但是当我将它移动到离开它不会被删除（降低）..

what happens is when i move the seekbar to the right the hue applys but when i move it to the left it doesn't get removed ( decreased ) ..

推荐答案

简单的逻辑错误。您有 applyHueFilter（MYBITMAP，100）; ...你增加它由100无论是什么

Simple logic error. You have applyHueFilter(myBitmap, 100);... you are increasing it by 100 no matter what.

这应该是：

applyHueFilter(myBitmap, progress); 

纵观 applyHueFilter 方法，你也总是在做 HSV [0] * =水平; ，所以不管是什么，你总是增加了色相，只是或大或小的数额。

Looking at the applyHueFilter method, you are also always doing HSV[0] *= level;, so no matter what, you are always increasing the hue, just by lesser or greater amounts.