如何计算GridView的高度。ScrollView嵌套GridView



/** * 获取GridView的高度 * @param gridView * @return */private int getGridViewHeight(GridView gridView){    ListAdapter adapter =  gridView.getAdapter();    int height = 0;    int itemViewHeight = 0;    int adapterCount = 0;    int verticalSpacing = gridView.getVerticalSpacing();//gridView设置的垂直边距    if(adapter != null){        adapterCount = adapter.getCount();        if(adapterCount > 0){            View itemView = gridView.getAdapter().getView(0,null,gridView);            itemView.measure(0,0);            itemViewHeight = itemView.getMeasuredHeight();        }    }    int columns = getGridDisplayState();//这个函数替换为getNumColumns()    height = itemViewHeight * adapterCount;    if(columns == 1){        return height;    }    if(adapterCount % columns != 0){        int rowsNum = adapterCount / columns + 1;        height = itemViewHeight * (rowsNum * verticalSpacing);        return height;    }else{        int rowsNum = adapterCount / columns;        height = itemViewHeight * (rowsNum * verticalSpacing);        return height;    }}