Android expandablelistview 布局文件的常用属性
时间: 2023-11-03 09:01:45 浏览: 54
在 Android 的 ExpandableListView 布局文件中,常用的属性有:
1. `android:layout_width`:设置布局的宽度
2. `android:layout_height`:设置布局的高度
3. `android:divider`:设置分割线的样式
4. `android:indicatorLeft`:设置指示图标的左边界
5. `android:childIndicatorLeft`:设置子项指示图标的左边界
6. `android:childDivider`:设置子项之间的分割线样式
7. `android:cacheColorHint`:设置滚动时背景的颜色
8. `android:groupIndicator`:设置组项指示图标的样式
相关问题:
1. ExpandableListView 怎么设置子项点击事件?
2. 如何自定义 ExpandableListView
相关问题
android ExpandableListView
Android ExpandableListView is a view that is used to display a list of items that can be expanded or collapsed to show or hide associated sub-items. It is a subclass of ListView and provides a user interface similar to a tree view.
The ExpandableListView consists of two types of views: group views and child views. Group views represent the parent items, and child views represent the sub-items associated with each parent item.
To use an ExpandableListView in your Android application, you need to create a custom adapter that extends the BaseExpandableListAdapter class. This adapter provides methods to create and manage the group and child views.
Here are the basic steps to use an ExpandableListView in your Android application:
1. Define the layout for the group and child views.
2. Create a custom adapter by extending BaseExpandableListAdapter.
3. Implement the required methods in the adapter to populate the group and child views.
4. Set the adapter to the ExpandableListView using the setAdapter() method.
Once you have set up the ExpandableListView with your custom adapter, you can handle user events such as clicking on a group view to expand or collapse it, or clicking on a child view to perform some action.
Overall, ExpandableListView is a powerful and flexible view that can be used to display hierarchical data in a user-friendly way.
Android ExpandableListView 长按事件
您好,针对您的问题,Android ExpandableListView 长按事件可以通过设置 OnItemLongClickListener 实现。具体操作如下:
1. 在 ExpandableListView 上设置 OnItemLongClickListener:
```java
expandableListView.setOnItemLongClickListener(new ExpandableListView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
// 处理长按事件
return true;
}
});
```
2. 在处理长按事件的方法中,根据 position 参数判断是父项还是子项被长按:
```java
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
int itemType = expandableListView.getPackedPositionType(id);
int groupPosition = expandableListView.getPackedPositionGroup(id);
int childPosition = expandableListView.getPackedPositionChild(id);
if (itemType == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
// 父项被长按
// TODO 处理父项长按事件
} else if (itemType == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
// 子项被长按
// TODO 处理子项长按事件
}
return true;
}
```
希望这些代码可以帮助您实现您的需求。