解决listview嵌套时的高度问题

来源:互联网 发布:永琪和知画圆房视频 编辑:程序博客网 时间:2024/05/19 23:16
/**     * 只要在设置ListView的Adapter后调用此静态方法即可让ListView正确的显示     * 在其父ListView的ListItem中。但是要注意的是,子ListView的每个Item必须是LinearLayout,     * 不能是其他的,因为其他的Layout(如RelativeLayout)没有重写onMeasure(), 所以会在onMeasure()时抛出异常。     *      * @param listView     */    private static void setListViewHeightBasedOnChildren(ListView listView) {        ListAdapter listAdapter = listView.getAdapter();        if (listAdapter == null) {            return;        }        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();        }        ViewGroup.LayoutParams params = listView.getLayoutParams();        params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1))                + 5;        listView.setLayoutParams(params);    }

另一种方式是复写ListView的onMeasure方法:

@Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        if (isInsideScrollView) {            int expandSpec = MeasureSpec.makeMeasureSpec(                    Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);            super.onMeasure(widthMeasureSpec, expandSpec);        } else {            super.onMeasure(widthMeasureSpec, heightMeasureSpec);        }    }


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