<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >    <android.support.v4.widget.SwipeRefreshLayout        android:id="@+id/swipe"        android:layout_width="match_parent"        android:layout_height="match_parent" >        <ListView            android:id="@+id/listview"            android:layout_width="fill_parent"            android:layout_height="wrap_content" />    </android.support.v4.widget.SwipeRefreshLayout></RelativeLayout>

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        listView = (ListView) findViewById(R.id.listview);        mSwipeLayout = (SwipeRefreshLayout) findViewById(R.id.swipe);                list = new ArrayList<MyTextClass>();            Map<String, String> maps = new HashMap<String, String>();        maps.put("1", "2");                myHandler = new MyHandler();                client = new MyHttpClient(myHandler);                myThread = new MyThread(client,"http://192.168.1.4/json/index.php",maps,GETJSON);                myHandler.setThread(myThread);                        myHandler.setHandlerExtraHandleMessage(new MyHandler.HandlerExtraHandleMessage()        {            @Override            public void handleMessage(Message msg) {                switch (msg.what) {                case GETJSON:                    String strJson1 = (String) msg.obj;                    Json json1 = new Json(strJson1);                    try {                        list = json1.getMyTextClass();                    } catch (JSONException e) {                        e.printStackTrace();                    }                    myBaseAdapter = new MyBaseAdapter(MainActivity.this, list);                    listView.setAdapter(myBaseAdapter);                    break;                case REFRESH:                    String strJson2 = (String) msg.obj;                    Json json2 = new Json(strJson2);                    //list.clear();                    try {                        list = json2.getMyTextClass();                    } catch (JSONException e) {                        e.printStackTrace();                    }                                        if(myBaseAdapter != null)                    {                        myBaseAdapter.setList(list);                        myBaseAdapter.notifyDataSetChanged();                    }                    else                    {                        MyBaseAdapter myBaseAdapter2 = new MyBaseAdapter(MainActivity.this, list);                        listView.setAdapter(myBaseAdapter2);                    }                    mSwipeLayout.setRefreshing(false);                    break;                default:                    System.out.println("Other Message");                    break;                }                super.handleMessage(msg);            }                    });                Map<String, String> maps2 = new HashMap<String, String>();        maps.put("1", "2");        MyRefreshListener myRefreshListener = new MyRefreshListener(myHandler, maps2, REFRESH);        mSwipeLayout.setOnRefreshListener(myRefreshListener);        mSwipeLayout.setColorScheme(android.R.color.holo_green_dark, android.R.color.holo_green_light,                android.R.color.holo_orange_light, android.R.color.holo_red_light);    }