SmoothCheckBox.java 文件源码

private static int getGradientColor(int startColor, int endColor, float percent)
{
    int startA = Color.alpha(startColor);
    int startR = Color.red(startColor);
    int startG = Color.green(startColor);
    int startB = Color.blue(startColor);

    int endA = Color.alpha(endColor);
    int endR = Color.red(endColor);
    int endG = Color.green(endColor);
    int endB = Color.blue(endColor);

    int currentA = (int) (startA * (1 - percent) + endA * percent);
    int currentR = (int) (startR * (1 - percent) + endR * percent);
    int currentG = (int) (startG * (1 - percent) + endG * percent);
    int currentB = (int) (startB * (1 - percent) + endB * percent);
    return Color.argb(currentA, currentR, currentG, currentB);
}