1 在佈局文件中聲明ExpandableListActivity控件main.xml
<ExpandableListView android:id="@id/android:list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false"/>
<TextView android:id="@id/android:empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="No Data"/>
2在佈局文件中聲明group樣式group.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- 設置一級條目樣式 -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView android:id="@+id/groupTo"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="60dp"
android:paddingTop="1dp"
android:paddingBottom="10dp"
android:textSize="26sp"
android:text="No Data"/>
</LinearLayout>
3在佈局文件中聲明子項的樣式child.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- 設置二級條目的樣式 -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView android:id="@+id/childTo"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="50dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:textSize="20sp"
android:text="@string/nodata"/>
</LinearLayout>
4創建一個Activity ，繼承自ExpandableListActivity
public class MainActivity extends ExpandableListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
5爲group創建數據
List<Map<String, String>> groups = new ArrayList<Map<String, String>>();
Map<String, String> group1 = new HashMap<String, String>();
group1.put("group", "group1");
Map<String, String> group2 = new HashMap<String, String>();
group2.put("group", "group2");
groups.add(group1);
groups.add(group2);
6爲child創建數據
// 定義一個List,該List爲第一個一級條目提供二級條目的數據
List<Map<String, String>> child1 = new ArrayList<Map<String, String>>();
Map<String, String> child1Data1 = new HashMap<String, String>();
child1Data1.put("child", "child1Data1");
Map<String, String> child1Data2 = new HashMap<String, String>();
child1Data2.put("child", "child1Data2");
child1.add(child1Data1);
child1.add(child1Data2);
// 定義一個List,該List爲第二個一級條目提供二級條目的數據
List<Map<String, String>> child2 = new ArrayList<Map<String, String>>();
Map<String, String> child2Data = new HashMap<String, String>();
child2Data.put("child", "child2Data");
child2.add(child1Data1);
// 定義一個List,該List用來存儲所有的二級條目的數據
List<List<Map<String, String>>> childs = new ArrayList<List<Map<String, String>>>();
childs.add(child1);
childs.add(child2);
7生成一個SimpleExpandableListAdapter對象，設置給當前ExpandableListActivity
SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(
this, groups, R.layout.group, new String[] { "group" },
new int[] { R.id.groupTo }, childs, R.layout.child,
new String[] { "child" }, new int[] { R.id.childTo });
//將SimpleExpandableListAdapter對象設置給當前的ExpandableListActivity
setListAdapter(adapter);
