ScoreView嵌套Listview或GradView显示不全问题解决

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public class ListviewUtil {
    
    public static void setListViewHeightBasedOnChildren(ListView listView) {
        // 获取ListView对应的Adapter
        ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter == null) {
            return;
        }
        int totalHeight = 0;
        // listAdapter.getCount()返回数据项的数目
        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);
            // 计算子项View 的宽高
            listItem.measure(0, 0);
            // 统计所有子项的总高度
            totalHeight += listItem.getMeasuredHeight();
        }
        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
        // listView.getDividerHeight()获取子项间分隔符占用的高度
        // params.height最后得到整个ListView完整显示需要的高度
        listView.setLayoutParams(params);
    }

    public static int getheight(ListView listView) {
        ListAdapter listAdapter = listView.getAdapter();
        int totalHeight = 0;
        for (int i = 0; i < listAdapter.getCount(); i++) {
            View listItem = listAdapter.getView(i, null, listView);
            listItem.measure(0, 0);
            totalHeight += listItem.getMeasuredHeight();
        }
        return totalHeight;
    }

    public static void setGridViewHeightBasedOnChildren(GridView gridView) {
        // 获取GridView对应的Adapter
        ListAdapter listAdapter = gridView.getAdapter();
        if (listAdapter == null) {
            return;
        }
        int rows;
        int columns = 0;
        int horizontalBorderHeight = 0;
        Class<?> clazz = gridView.getClass();
        try {
            //利用反射,取得每行显示的个数
            Field column = clazz.getDeclaredField("mRequestedNumColumns");
            column.setAccessible(true);
            columns = (Integer) column.get(gridView);
            //利用反射,取得横向分割线高度
            Field horizontalSpacing = clazz.getDeclaredField("mRequestedHorizontalSpacing");
            horizontalSpacing.setAccessible(true);
            horizontalBorderHeight = (Integer) horizontalSpacing.get(gridView);
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
        //判断数据总数除以每行个数是否整除。不能整除代表有多余,需要加一行
        if (listAdapter.getCount() % columns > 0) {
            rows = listAdapter.getCount() / columns + 1;
        } else {
            rows = listAdapter.getCount() / columns;
        }
        int totalHeight = 0;
        for (int i = 0; i < rows; i++) {
            View listItem = listAdapter.getView(i, null, gridView);
            listItem.measure(0, 0);
            totalHeight += listItem.getMeasuredHeight();
        }
        ViewGroup.LayoutParams params = gridView.getLayoutParams();
        params.height = totalHeight + horizontalBorderHeight * (rows - 1);
        gridView.setLayoutParams(params);
    }
}

直接使用下列工具类,如果是嵌套listview调用ListviewUtil.setListViewHeightBasedOnChildren(listview);
如果是嵌套gridview调用ListviewUtil.setGridViewHeightBasedOnChildren(gridview);

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转载自blog.csdn.net/huangliniqng/article/details/83536829