Android HorizontalScrollView嵌套CustomView

在HorizontalScrollView中如果要嵌套CustomView，要在CustomView的onMeasure方法设置CustomView的宽高，不然CustomView不能显示出来。

@Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        setMeasuredDimension(width, height);
    }