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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