学步园

一.简单示例

src

public class AndroidUIActivity extends ExpandableListActivity {

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		// 准备顶层列表数据
		List<Map<String, String>> topList = new ArrayList<Map<String, String>>();

		Map<String, String> topMap1 = new HashMap<String, String>();
		Map<String, String> topMap2 = new HashMap<String, String>();
		Map<String, String> topMap3 = new HashMap<String, String>();
		topMap1.put("month", "三月测评项");
		topMap2.put("month", "四月测评项");
		topMap3.put("month", "五月测评项");
		topList.add(topMap1);
		topList.add(topMap2);
		topList.add(topMap3);

		// 准备二层列表数据
		List<List<Map<String, String>>> nestList = new ArrayList<List<Map<String, String>>>();

		// 准备二层列表第一个子列表数据
		List<Map<String, String>> nestList1 = new ArrayList<Map<String, String>>();
		Map<String, String> nestMap1 = new HashMap<String, String>();
		Map<String, String> nestMap2 = new HashMap<String, String>();
		Map<String, String> nestMap3 = new HashMap<String, String>();
		nestMap1.put("test", "看手");
		nestMap2.put("test", "吃手");
		nestMap3.put("test", "玩手");
		nestList1.add(nestMap1);
		nestList1.add(nestMap2);
		nestList1.add(nestMap3);

		// 准备二层列表第二个子列表数据
		List<Map<String, String>> nestList2 = new ArrayList<Map<String, String>>();
		Map<String, String> nestMap4 = new HashMap<String, String>();
		Map<String, String> nestMap5 = new HashMap<String, String>();
		nestMap4.put("test", "翻身");
		nestMap5.put("test", "辨别声音来源方位");
		nestList2.add(nestMap4);
		nestList2.add(nestMap5);

		// 准备二层列表第三个子列表数据
		List<Map<String, String>> nestList3 = new ArrayList<Map<String, String>>();
		Map<String, String> nestMap6 = new HashMap<String, String>();
		Map<String, String> nestMap7 = new HashMap<String, String>();
		nestMap6.put("test", "你好");
		nestMap7.put("test", "你坏");
		nestList3.add(nestMap6);
		nestList3.add(nestMap7);

		// 把子列表数据放入
		nestList.add(nestList1);
		nestList.add(nestList2);
		nestList.add(nestList3);

		// 准备数据匹配器
		SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter(
				this, // 1.上下文
				topList, // 2.顶层数据列表
				android.R.layout.simple_expandable_list_item_1, // 3.一层显示样式
				new String[] { "month" }, // 4.顶层map的键
				new int[] { android.R.id.text1 }, // 5.顶层数据显示的View ID
				nestList, // 6.二层数据列表
				android.R.layout.simple_list_item_1, // 7.二层显示样式
				new String[] { "test"}, // 8.二层map的键
				new int[] { android.R.id.text1 } // 9.二层数据显示的View ID
		);

		// 设置数据匹配器
		this.setListAdapter(adapter);

	}

	@Override
	public boolean onChildClick(ExpandableListView parent, View v,
			int groupPosition, int childPosition, long id) {
		Toast.makeText(this,
				"嵌套列表被点击，顶层列表定位" + groupPosition + "二层列表定位" + childPosition,
				Toast.LENGTH_SHORT).show();
		return super.onChildClick(parent, v, groupPosition, childPosition, id);
	}

	@Override
	public void onGroupCollapse(int groupPosition) {
		Toast.makeText(this, "顶层列表收缩，列表定位" + groupPosition, Toast.LENGTH_SHORT)
				.show();
		super.onGroupCollapse(groupPosition);
	}

	@Override
	public void onGroupExpand(int groupPosition) {
		Toast.makeText(this, "顶层列表展开，列表定位" + groupPosition, Toast.LENGTH_SHORT)
				.show();
		super.onGroupExpand(groupPosition);
	}

}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ExpandableListView
        android:id="@id/android:list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ExpandableListView>

</LinearLayout>

二. 运行结果

启动

展开列表三

点击列表三子列表1