Scrollview嵌套GridView只显示一行

gridview.getNumColumns()列数获取得到-1 所以列数写死为2

    public void setGridViewHeight(GridView gridview) {
        // 获取gridview的adapter
        ListAdapter listAdapter = gridview.getAdapter();
        if (listAdapter == null) {
            return;
        }
        // 固定列宽，有多少列
        //int numColumns= gridview.getNumColumns(); //5
        int numColumns = 2;

        View listItem = listAdapter.getView(0, null, gridview);
        listItem.measure(0, 0);
        // 获取item的高度和
        int totalHeight = listItem.getMeasuredHeight();
    
        // 获取布局参数
        ViewGroup.LayoutParams params = gridview.getLayoutParams();
        if (listAdapter.getCount() % numColumns != 0) {
            totalHeight = totalHeight * (listAdapter.getCount() / numColumns + 1);
        } else {
            totalHeight = totalHeight * (listAdapter.getCount() / numColumns);
        }

        // 设置高度
        params.height = totalHeight;
        // 设置margin
        //((ViewGroup.MarginLayoutParams) params).setMargins(10, 10, 10, 10);
        // 设置参数

        gridview.setLayoutParams(params);


    }