固定listview高度

嵌套listview时，对子listview进行高度固定，

@Override

    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,

                MeasureSpec.AT_MOST);

        super.onMeasure(widthMeasureSpec, expandSpec);

    }