java - 当X，Y在屏幕中心上方时，无法获得正确的颜色值

每当将值传递到位于屏幕中心或低于屏幕中心的x，y时，我都会获得正确的像素颜色，但是当x，y的值传递到屏幕中心上方时，我会得到错误的颜色值，以下是我正在使用的代码

private int getColor(int x, int y){

   Drawable imgDrawable = ((ImageView) mImageView_picture).getDrawable();
   Bitmap bitmap1 = ((BitmapDrawable) imgDrawable).getBitmap();
    Matrix inverse = new Matrix();
    ((ImageView) mImageView_picture).getImageMatrix().invert(inverse);
    float[] touchPoint = new float[]{x, y};
    inverse.mapPoints(touchPoint);
    int xCoord = (int) touchPoint[0];
    int yCoord = (int) touchPoint[1];
    int touchedRGB = bitmap1.getPixel(xCoord,yCoord);
    int redValue = Color.red(touchedRGB);
    int greenValue = Color.green(touchedRGB);
    int blueValue = Color.blue(touchedRGB);
    int alphaValue = Color.alpha(touchedRGB);
    int colorValue = Color.argb(alphaValue, redValue, greenValue, blueValue);
    return colorValue;
}

最佳答案

您的X和Y坐标有可能是错误的。
尝试变得像这样。

view.setOnTouchListener(new View.OnTouchListener() {
       @Override
       public boolean onTouch(View view, MotionEvent motionEvent) {
           Matrix inverse = new Matrix();
           imageView.getImageMatrix().invert(inverse);
           float[] touchPoint = new float[] {motionEvent.getX(), motionEvent.getY()};
           inverse.mapPoints(touchPoint);
          int  xCoord = Integer.valueOf((int)touchPoint[0]);
          int  yCoord = Integer.valueOf((int)touchPoint[1]);
           Log.v("coordinate",xCoord +" - "+yCoord );
           return true;
       }
   });