【Android】ExpandableListView示例

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ExpandableListView使用示例：

首先是布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <ExpandableListView        android:id="@+id/expandableListView1"        android:layout_width="match_parent"        android:layout_height="wrap_content" >    </ExpandableListView></LinearLayout>

下面是主函数：

public class MainActivity extends Activity {public List<String> groups; //组列表public List<List<String>> child; //子列表ExpandableListView expandableListView;mExpandableListAdapter adapter;  //数据适配器@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);expandableListView = (ExpandableListView) findViewById(R.id.expandableListView1);groups = new ArrayList<String>();child = new ArrayList<List<String>>(); addInfo("张胜男", new String[]{"女","漂亮"});  //添加数据addInfo("李子豪", new String[]{"男","帅气"});addInfo("万古琴", new String[]{"女","温婉"});addInfo("佘诗曼", new String[]{"女","好人"});expandableListView.setAdapter(new mExpandableListAdapter());}private void addInfo(String g, String[] c){groups.add(g);List<String> childItem = new ArrayList<String>();for(int i = 0; i < c.length; i++){childItem.add(c[i]);}child.add(childItem);}class mExpandableListAdapter extends BaseExpandableListAdapter{@Overridepublic Object getChild(int groupPosition, int childPosition) {return child.get(groupPosition).get(childPosition);}@Overridepublic long getChildId(int groupPosition, int childPosition) {return childPosition;}@Overridepublic View getChildView(int arg0, int arg1, boolean arg2, View arg3,ViewGroup arg4) {String s = child.get(arg0).get(arg1);return getGenericView(s);}@Overridepublic int getChildrenCount(int groupPosition) {return child.get(groupPosition).size();}@Overridepublic Object getGroup(int arg0) {return groups.get(arg0);}@Overridepublic int getGroupCount() {return groups.size();}@Overridepublic long getGroupId(int arg0) {return arg0;}@Overridepublic View getGroupView(int groupPosition, boolean arg1, View convertView, ViewGroup arg3) {String s =  groups.get(groupPosition);return getGenericView(s);}//创建组/子视图            public TextView getGenericView(String s) {                // Layout parameters for the ExpandableListView                AbsListView.LayoutParams lp = new AbsListView.LayoutParams(                        ViewGroup.LayoutParams.FILL_PARENT, 64);                  TextView text = new TextView(MainActivity.this);                text.setLayoutParams(lp);                // Center the text vertically                text.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);                // Set the text starting position                text.setPadding(36, 0, 0, 0);                  text.setText(s);                return text;            }    @Overridepublic boolean hasStableIds() {return false;}@Overridepublic boolean isChildSelectable(int arg0, int arg1) {return true;}}}

运行结果如下图：

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