基本信息

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   源码介绍

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可扩展的ListView

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("北京",new String[]{"朝阳","海淀","东城区","西城区"});
addInfo("河北", new String[]{"邯郸","石家庄","邢台"});
addInfo("广东", new String[]{"广州","深圳","珠海"});
}

/**
* 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);
}

}