ScrollView与ExpandableListView冲突问
2016-05-19 本文已影响0人
Tonki
ScrollView里面嵌套ExpandableListView时,ExpandableListView显示不全。
解决办法:
对于ExpandableListView的展开收起计算出所有显示的子项的高度。
通过setOnGroupExpandListener 和 setOnGroupCollapseListener对一阶子项的展开状态监听
/**
* 设置组的子View的高度
* @param listView
* @param groupPosition
* @param isExpanded
*/
public static void setChildViewHeight(ExpandableListView listView, int groupPosition, Boolean isExpanded) {
ExpandableListAdapter listAdapter = listView.getExpandableListAdapter();
int childTotalHeight = 0;
for (int i = 0; i < listAdapter.getChildrenCount(groupPosition); i++) {
View child = listAdapter.getChildView(groupPosition, i, false, null, listView);
child.measure(0, 0);
childTotalHeight += child.getMeasuredHeight();
}
ViewGroup.LayoutParams layoutParams = listView.getLayoutParams();
if (isExpanded) {//展开状态,增加高度
layoutParams.height += childTotalHeight;
} else {//收起状态,减掉二阶子项高度
layoutParams.height -= childTotalHeight;
}
listView.setLayoutParams(layoutParams);
}
/**
* 设置组的高度
* @param listView
*/
public static void setGroupViewHeight(ExpandableListView listView) {
int groupTotalHeight = 0;
ExpandableListAdapter listAdapter = listView.getExpandableListAdapter();
for (int i = 0; i < listAdapter.getGroupCount(); i++) {
View groupItem = listAdapter.getGroupView(i, false, null, listView);
groupItem.measure(0, 0);
groupTotalHeight += groupItem.getMeasuredHeight();
}
ViewGroup.LayoutParams layoutParams = listView.getLayoutParams();
layoutParams.height = groupTotalHeight + (listView.getDividerHeight() * (listAdapter.getGroupCount() - 1));;
listView.setLayoutParams(layoutParams);
}