多级列表ExpandableListView
扩展列表能够显示一个指示在每项显示项的当前状态（状态通常是一个扩展的组，组的孩子，或倒塌，最后一个孩子）。使用setchildindicator（drawable）或setgroupindicator（drawable）（或相应的XML属性）来设置这些指标,一个默认的风格多级列表提供指标，将示给意见多级列表。布局android.r.layout.simple_expandable_list_item_1和android.r.layout.simple_expandable_list_item_2（应用simplecursortreeadapter）包含位置信息的首选指标。
效果图：
public class MainActivity extends Activity {
private ExpandableListView listView;
private List<String> group;
private List<List<String>> child;
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ExpandableListView) findViewById(R.id.expandableListView);
/**
* 初始化数据
*/
initData();
adapter = new MyAdapter(this,group,child);
listView.setAdapter(adapter);
}
private void initData() {
group = new ArrayList<String>();
child = new ArrayList<List<String>>();
addInfo("笑傲江湖",new String[]{"东方不败","风清扬","令狐冲","岳不群"});
addInfo("天龙八部", new String[]{"乔峰","虚竹","段誉"});
addInfo("九阴真经", new String[]{"中神通","东邪","西毒","南帝","北丐"});
}
/**
* 添加数据信息
* @param g
* @param c
*/
private void addInfo(String g,String[] c) {
group.add(g);
List<String> list = new ArrayList<String>();
for (int i = 0; i < c.length; i++) {
list.add(c[i]);
}
child.add(list);
}
}