android 网络访问传数据的问题 求大神帮忙我看一下我的代码

标题可能没说明白 直接上代码 很简单

    private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        if (msg.what == 02234) {
           /* Bundle bundle = new Bundle();
            bundle.putInt("SocketTimeoutException",);*/
            Toast.makeText(MainActivity.mactivity, "连接超时", Toast.LENGTH_SHORT).show();
        }
    }
};

public String urlCon(final String input) {
Message message = new Message();
try {
URL url = new URL(PATH + input);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();

        connection.setConnectTimeout(5);
        if (connection.getConnectTimeout() == 5000) {
            message.what = 01234;
            handler.sendEmptyMessage(message.what);
        }

        connection.setReadTimeout(8000);
        connection.setRequestMethod("GET");
        connection.setUseCaches(false);
        connection.setDoOutput(true);
        connection.setDoInput(true);
        OutputStream outputStream = connection.getOutputStream();
        outputStream.flush();
        connection.connect();
        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);
        }
        Log.i("返回的数据是 ", response.toString());
        dowmloadfile(String.valueOf(new InputStreamReader(in)));
        return response.toString();

    } catch (MalformedURLException e1) {
        e1.printStackTrace();
    } catch (ProtocolException e1) {
        e1.printStackTrace();
    } catch (SocketTimeoutException e1) {
        message.what = 02234;
        handler.sendEmptyMessage(message.what);
        e1.printStackTrace();
    } catch (IOException e1) {
        e1.printStackTrace();
    }
    return null;
}

在外部类写了一个网络访问的函数，当捕捉到网络连接超时异常时发消息给Handler 然后再handler里面想做的是把catch到的SocketTimeoutException信息通过一个方法处理，处理之后可以让其他类得到这个信息，可以调用到这个信息，要怎么做呀？用bundle？还是什么函数来时间呢？求大神赐教啊！~~~~~~~

网络请求是一个异步的过程，你可以写一个静态方法调用，存储到map中，其它类要想获取响应的信息就去map那里获取就可以了

这个是完全可以的，不影响使用。

private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg.what == 02234) {
SocketTimeoutException socketTimeoutException = new SocketTimeoutException();
map.put("key1", socketTimeoutException);
String s = Cloud.map.get("key1").toString();
System.out.println(s);
Toast.makeText(MainActivity.mactivity, "连接超时", Toast.LENGTH_SHORT).show();
}
}
};

空指针：获取s的时候Cloud.map这个好像没在你的代码里看到 创建Cloud实例或者给Cloud.map赋值耶