Android之ExpandableListView控件

code:

 

 

public class ExpandableListViewActivity extends ExpandableListActivity {

	private static final String TAG = "ExpandableListViewActivity";


	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		List<Map<String, String>> groupData = new ArrayList<Map<String, String>>();
		Map<String, String> groupMap1 = new HashMap<String, String>();
		Map<String, String> groupMap2 = new HashMap<String, String>();
		groupMap1.put("parent", "家具");
		groupMap2.put("parent", "喜好");
		groupMap1.put("parent2", "家具2");
		groupData.add(groupMap1);
		groupData.add(groupMap2);

		List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>();
		List<Map<String, String>> child1 = new ArrayList<Map<String, String>>();
		Map<String, String> childMap1 = new HashMap<String, String>();
		Map<String, String> childMap2 = new HashMap<String, String>();
		childMap1.put("child", "家具1111");
		childMap2.put("child", "喜好1111");
		child1.add(childMap1);
		child1.add(childMap2);
		
		List<Map<String, String>> child2 = new ArrayList<Map<String, String>>();
		Map<String, String> childMap3 = new HashMap<String, String>();
		Map<String, String> childMap4 = new HashMap<String, String>();
		childMap3.put("child", "家具2222");
		childMap4.put("child", "喜好2222");
		child2.add(childMap3);
		child2.add(childMap4);
		
		childData.add(child1);
		childData.add(child2);

		SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(this, groupData, R.layout.group,
				new String[] { "parent","parent2" }, new int[] { R.id.group , R.id.group2}, childData, R.layout.child,
				new String[] { "child" }, new int[] { R.id.child });
	
		setListAdapter(adapter);
	}

	/**
	 * 默认选中的子目录
	 */
	@Override
	public boolean setSelectedChild(int groupPosition, int childPosition, boolean shouldExpandGroup) {
		Log.e(TAG, "--------setSelectedChild");
		return super.setSelectedChild(groupPosition, childPosition, shouldExpandGroup);
	}

	/**
	 * 默认选中的父类目录
	 */
	@Override
	public void setSelectedGroup(int groupPosition) {
		Log.e(TAG, "--------setSelectedGroup");
		super.setSelectedGroup(groupPosition);
	}

	/**
	 * 子目录被点击的时候
	 */
	@Override
	public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
		Log.e(TAG, "--------onChildClick");
		return super.onChildClick(parent, v, groupPosition, childPosition, id);
	}
}

 

 

layout:

 

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<TextView android:layout_width="fill_parent"
		android:layout_height="wrap_content" android:text="@string/hello" />
	<ExpandableListView android:id="@id/android:list"
		android:layout_height="wrap_content" android:layout_width="match_parent"></ExpandableListView>
</LinearLayout>

 

  child.xml

 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="match_parent"
	android:layout_height="match_parent">
	<TextView android:text="TextView" android:id="@+id/child"
		android:textSize="25sp" android:paddingLeft="35px" android:paddingTop="10px"
		android:paddingRight="5px" android:layout_width="wrap_content"
		android:layout_height="wrap_content"></TextView>
</LinearLayout>

 

group.xml

 

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

	android:orientation="vertical" android:layout_width="match_parent"
	android:layout_height="match_parent">
	<TextView android:text="TextView" android:id="@+id/group"
		android:textSize="25sp" android:paddingLeft="35px" android:paddingTop="10px"
		android:paddingRight="5px" android:paddingBottom="10px"
		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
<TextView android:text="TextView" android:id="@+id/group2"
		android:textSize="25sp" android:paddingLeft="35px" android:paddingTop="10px"
		android:paddingRight="5px" android:paddingBottom="10px"
		android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>

</LinearLayout>

 

效果图：