ListView

public class SecondActivity extends Activity implements AdapterView.OnItemClickListener,AbsListView.OnScrollListener{

    private ListView listView;
    private ArrayAdapter<String>arrayAdapter;
    private SimpleAdapter simpleAdapter;
    private List<Map<String,Object>> dataList;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);

        listView = (ListView)findViewById(R.id.listView);

        /* ArrayAdapter
        //1.新建一個數據適配器
        //2.適配器加載數據源
        //3.視圖加載適配器
        String[]arr_data = {"測試1","測試2","測試3","測試4","測試5"};
        //ArrayAdapter(上下文,佈局文件,數據源)
        arrayAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,arr_data);
        listView.setAdapter(arrayAdapter);
        */


        //SimpleAdapter
        /*
        * context:上下文
        * data:數據源(List<? extends Map<String,?>>data) 一個map組成的list集合
        * resource:列表項的佈局文件ID
        * from:Map中的鍵名
        * to:綁定數據視圖中的ID,與from成對應關係
        * */
        dataList = new ArrayList<Map<String, Object>>();
        simpleAdapter = new SimpleAdapter(this,getData(),R.layout.cell,new String[]{"cellpic","celltext"},new int[]{R.id.cellpic,R.id.celltext});
        listView.setAdapter(simpleAdapter);
        listView.setOnItemClickListener(this);
        listView.setOnScrollListener(this);
    }

    private List<Map<String,Object>>getData(){

        for (int i=0;i<20;i++){
            Map<String,Object>map = new HashMap<String,Object>();
            map.put("cellpic",R.drawable.icon);
            map.put("celltext","測試"+i);
            dataList.add(map);
        }

        return dataList;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        String text = listView.getItemAtPosition(position).toString(); //能夠縮寫listView.getItemAtPosition(position)+「」;
        Toast.makeText(this,"position = "+position+" text = "+text,Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        switch (scrollState){
            case SCROLL_STATE_FLING:
                System.out.print("用戶手指離開屏幕,但屏幕繼續減速滑動過程當中");
                //添加數據源
                Map<String,Object>map = new HashMap<String,Object>();
                map.put("cellpic",R.drawable.icon);
                map.put("celltext","增長項");
                dataList.add(map);
                //適配器刷新數據
                simpleAdapter.notifyDataSetChanged();
                break;
            case SCROLL_STATE_IDLE:
                System.out.print("中止滑動");
                break;
            case SCROLL_STATE_TOUCH_SCROLL:
                System.out.print("正在滑動");
                break;
        }
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

    }
}