DayView.java 文件源码

private static Drawable generateBackground(int color, int fadeTime, Rect bounds) {
    StateListDrawable drawable = new StateListDrawable();
    drawable.setExitFadeDuration(fadeTime);
    drawable.addState(new int[]{android.R.attr.state_checked}, generateCircleDrawable(color));
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        drawable.addState(new int[]{android.R.attr.state_pressed}, generateRippleDrawable(color, bounds));
    } else {
        drawable.addState(new int[]{android.R.attr.state_pressed}, generateCircleDrawable(color));
    }

    drawable.addState(new int[]{}, generateCircleDrawable(Color.TRANSPARENT));

    return drawable;
}