安卓 求教如何在我的代码中应用HANDLE方法

下面是我写的代码
public String urlCon(String input) {
try {
URL url = new URL(PATH + input);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(5000);
connection.setReadTimeout(8000);
connection.setRequestMethod("GET");
connection.setUseCaches(false);
connection.setDoOutput(true);
connection.setDoInput(true);
OutputStream outputStream = connection.getOutputStream();
outputStream.flush();
connection.getResponseCode();
InputStream in = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));

        StringBuilder response = new StringBuilder();
        String line;

        while ((line = reader.readLine()) != null) {
            response.append(line);
        }
        return response.toString();
    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    } catch (ProtocolException e1) {
        e1.printStackTrace();
    } catch (IOException e1) {
        e1.printStackTrace();
    }
    return null;
}

我的想法是这个函数里面如果网很卡的话就会好很长时间，所以想把这个函数写在HANDLE方法里进行相应的操作 可行吗？要怎么实现呢？求方法。。

private Handler mhandler = new Handler() {//先建立一个handler
@Override
public void handleMessage(Message msg) {

        if (msg.arg1 != -2) {
            //执行你的方法
    }
};

    //在需要的地方   
    Message message = mhandler.obtainMessage();
     message.arg1 = -2;
 mhandler.sendMessage(message);

    不懂再问，

public String urlCon(final String input){
Looper.prepare();
Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
if (msg.arg1 != 0123){
try {
URL url = new URL(PATH + input);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setConnectTimeout(5000);
connection.setReadTimeout(8000);
connection.setRequestMethod("GET");
connection.setUseCaches(false);
connection.setDoOutput(true);
connection.setDoInput(true);
OutputStream outputStream = connection.getOutputStream();
outputStream.flush();
connection.getResponseCode();
InputStream in = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));

                StringBuilder response = new StringBuilder();
                String line;
                while ((line = reader.readLine()) != null) {
                    response.append(line);
                }
                //    System.out.println(response);
                Log.i("返回的数据是 ", response.toString());
            } catch (MalformedURLException e1) {
                e1.printStackTrace();
            } catch (ProtocolException e1) {
                e1.printStackTrace();
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        }
    }
};
Looper.loop();
Message message = handler.obtainMessage();
message.arg1 = 0123;

handler.sendMessage(message);
// return urlCon(input);
}

这个返回值的地方想要返回 response 要怎么加啊

public class newclkas extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

    Thread thread=new Thread(new Runnable() {
        @Override
        public void run() {
           System.out.println( urlCon("--------"));//你直接运行我这个代码看看
            /*
            handler里面本来就是主线程，你不能在主线程进行耗时操作。你要清楚，handler之所以用来更新主线程，是因为配合threed来实现的，，在run()中你可以调用handler进行一些ui更新，
             */
            Message message = handler.obtainMessage();
            message.arg1 = 0123;
        }
    });
    thread.start();
}

public String urlCon( String input){
    try {
        URL url = new URL(input);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setConnectTimeout(5000);
        connection.setReadTimeout(8000);
        connection.setRequestMethod("GET");
        connection.setUseCaches(false);
        connection.setDoOutput(true);
        connection.setDoInput(true);
        OutputStream outputStream = connection.getOutputStream();
        outputStream.flush();
        connection.getResponseCode();
        InputStream in = connection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));

        StringBuilder response = new StringBuilder();
        String line;
        while ((line = reader.readLine()) != null) {
            response.append(line);
        }
        //    System.out.println(response);
        Log.i("返回的数据是 ", response.toString());
        return response.toString();
    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    } catch (ProtocolException e1) {
        e1.printStackTrace();
    } catch (IOException e1) {
        e1.printStackTrace();
    }
    return "";
}

Handler handler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
        if (msg.arg1 != 0123){
            //你要知道，这个地方就是主线程。
            //不能放一些耗时操作或者ui更新，
        }
    }
};

}

http://my.oschina.net/u/2406195/blog/482787，希望有助