<ListViewandroid:id="@+id/listview1"        android:layout_width="fill_parent"        android:layout_height="0dp"        android:layout_weight="1"        android:cacheColorHint="#00000000" />

<LinearLayoutandroid:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">

<Buttonandroid:id="@+id/button_add"            android:layout_width="0dp"             android:layout_height="wrap_content"            android:layout_weight="1"            android:text="添加" ></Button>

<Buttonandroid:id="@+id/button_delete"            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_weight="1"            android:text="删除" ></Button></LinearLayout>

<TextViewandroid:id="@+id/textview1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textColor="#FF0000"        android:textSize="25dp" />

<Buttonandroid:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="150dp"        android:focusable="false" />

public class AdapterActivity extends Activity {

private ListView listView;

private List<HashMap<String, String>> data;

private ListViewAdapter adapter;

    @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);        setContentView(R.layout.adapter);

        listView = (ListView) findViewById(R.id.listview1);

        Button addButton = (Button) findViewById(R.id.button_add);        Button deleteButton = (Button) findViewById(R.id.button_delete);        ButtonListener listener = new ButtonListener();        addButton.setOnClickListener(listener);        deleteButton.setOnClickListener(listener);

this.initListView();

        Timer timer = new Timer();        timer.schedule(new TimerTask() {// 15秒后向data集合中增加一条数据                    @Overridepublic void run() {                        HashMap<String, String> map = new HashMap<String, String>();                        map.put("text", "text100");                        map.put("buttonText", "buttonText100");                        data.add(map);                        Log.i(Constant.TAG, "添加数据成功");

// adapter.notifyDataSetChanged(); 非UI线程报错

                        Message msg = new Message();                        msg.what = 1;                        handler.sendMessage(msg);                    }                }, 15000);    }

private Handler handler = new Handler() {        @Overridepublic void handleMessage(Message msg) {// super.handleMessage(msg);            switch (msg.what) {case 1:// UI线程中调用此方法通知观察者(源码中关于adapter存在一个observer,未深究！)adapter数据已改变，刷新view                adapter.notifyDataSetChanged();// adapter.notifyDataSetInvalidated();// 与上面// 效果相同，源码中除了注释不同，执行的代码一样，同样未深究// listView.postInvalidate();刷新无效                break;            }        }    };

private void initListView() {        data = ViewApp.getData();// ViewApp是一个全局的类，程序运行时data数据即加载完毕，这是只是赋值到data成员变量中        adapter = new ListViewAdapter(this, data, R.layout.adapter_item);        SimpleAdapter simpleAdapter = new SimpleAdapter(this, data,                R.layout.adapter_item, new String[] { "text", "buttonText" },new int[] { R.id.textview1, R.id.button1 });

        listView.setAdapter(adapter);    }

class ListViewAdapter extends BaseAdapter {

private List<HashMap<String, String>> data;private int resource;private LayoutInflater inflater;

private HashMap<String, String> itemData;

public ListViewAdapter(Context context,                List<HashMap<String, String>> data, int resource) {// super(context, data, resource, from, to);            this.data = data;this.resource = resource;            inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);        }

        @Overridepublic int getCount() {return data.size();        }

        @Overridepublic Object getItem(int position) {return null;        }

        @Overridepublic long getItemId(int position) {return 0;        }

// 渲染每一个item的数据，每次上下滑动显示数据时都会调用此方法        @Overridepublic View getView(int position, View convertView, ViewGroup parent) {if (null == convertView) {                convertView = inflater.inflate(resource, null);

            }// convertView.setTag("abc");            itemData = data.get(position);            TextView textView = (TextView) convertView                    .findViewById(R.id.textview1);            textView.setText(itemData.get("text"));final Button button = (Button) convertView                    .findViewById(R.id.button1);            button.setText(itemData.get("buttonText"));            button.setOnClickListener(new View.OnClickListener() {

                @Overridepublic void onClick(View v) {                    Toast.makeText(AdapterActivity.this, button.getText(),                            Toast.LENGTH_SHORT).show();                }            });return convertView;        }    }

class ButtonListener implements View.OnClickListener {        @Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.button_add:

                HashMap<String, String> map = new HashMap<String, String>();                map.put("text", "text200");                map.put("buttonText", "buttonText200");                data.add(map);                Log.i(Constant.TAG, "ADD");

break;case R.id.button_delete:                Log.i(Constant.TAG, "DELETE");                data.remove(1);break;            }            adapter.notifyDataSetChanged();// adapter更改后刷新view        }    }

}