Android(安卓)--- BaseAdapter

BaseAdapter就Android应用程序中经常用到的基础数据适配器，它的主要用途是将一组数据传到像ListView、Spinner、Gallery及GridView等UI显示组件，它是继承自接口类Adapter。

class MyAdapter extends BaseAdapter {private LayoutInflater mInflater;private List> listData;// 存放 Title + itemprivate List> splitData; // 存放Titlepublic MyAdapter(Context context, List> listData,List> splitData) {this.mInflater = LayoutInflater.from(context);this.listData = listData;this.splitData = splitData;}public int getCount() {return listData.size();}public Object getItem(int position) {return listData.get(position);}public long getItemId(int position) {return position;}/** 是否是个分隔item */public boolean isEnabled(int position) {if (splitData.contains(listData.get(position))) {return false;}return super.isEnabled(position);}public View getView(final int position, View convertView, ViewGroup parent) {if (splitData.contains(listData.get(position))) {//如果数据里的内容包含Title信息的，就是Title信息了---- 用“list_items_tag”布局convertView = mInflater.inflate(R.layout.list_items_tag, null);} else {//如果数据里的内容没包含Title ---- 用“list_items”布局convertView = mInflater.inflate(R.layout.list_items, null);}TextView textView = (TextView) convertView.findViewById(R.id.itemTitle);textView.setText(listData.get(position).get("itemTitle"));return convertView;}}

public class MyListView5 extends Activity {// 存放（ Title + item）private List> mylist = new ArrayList>();// 存放Titleprivate List> splitList = new ArrayList>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.groupview);ListView lv = (ListView) findViewById(R.id.MyListView);setData(); // 设置数据// 配置适配器MyAdapter adapter = new MyAdapter(this, mylist, splitList); // 布局里的控件id// 添加并且显示lv.setAdapter(adapter);}private void setData() {// 组织数据源Map mp = new HashMap();mp.put("itemTitle", "A");mylist.add(mp);// 存放（ Title + item）splitList.add(mp);// 存放Titlefor (int i = 0; i < 3; i++) {Map map = new HashMap();map.put("itemTitle", "文章1-" + i);mylist.add(map);// 存放（ Title + item）}mp = new HashMap();mp.put("itemTitle", "B");mylist.add(mp);// 存放（ Title + item）splitList.add(mp);// 存放Titlefor (int i = 0; i < 6; i++) {Map map = new HashMap();map.put("itemTitle", "文章2-" + i);mylist.add(map);// 存放（ Title + item）}}}

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