android--------ExpandableListView的使用多级列表

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);
     }

 }

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