Android 套接字数据流传输到其他活动

我正在做一个套接字编程，其中客户端有两个活动。来自服务器的不同类型的数据用于在两个活动上显示。我在第一个活动中创建了一个套接字，打开Inputdatastream，然后使用标准套接字处理程序类将套接字传输到第二个活动。但是，当我在第二个窗口中打开InputDatastream时，那里没有任何数据。请给我建议一些解决办法。 主要活动：

public class MainActivity extends AppCompatActivity {


Map<String, Map<String,Integer>> order = new HashMap<>();
Map<String, Integer> details = new HashMap<>();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    buttonConnect.setOnClickListener(buttonConnectOnClickListener);
    if(!(total>0.0)) {
        Toast.makeText(this, "nothing selected", Toast.LENGTH_LONG).show();
    }
}
OnClickListener buttonConnectOnClickListener =
        new OnClickListener(){

            @Override
            public void onClick(View arg0) {
                MyClientTask myClientTask = new MyClientTask(
                        ipToset,
                        Integer.parseInt(portToset));
                myClientTask.execute();
            }};

public class MyClientTask extends AsyncTask<Void, Void, Void> {

    String dstAddress;
    int dstPort;
    String response = "";

    MyClientTask(String addr, int port) {
        dstAddress = addr;
        dstPort = port;
    }
    @Override
    protected Void doInBackground(Void... arg0) {

        Socket socket = null;

        try {
            socket = new Socket(dstAddress, dstPort);
            SocketHandler.setSocket(socket);
            if(total>0.0) {

                SocketClientReplyThread socketClientReplyThread = new SocketClientReplyThread(
                        socket, "from client");
                socketClientReplyThread.run();

                SocketClientReadThread socketClientReadThread = new SocketClientReadThread(
                        socket, "from client");
                socketClientReadThread.run();
            }

            if(total>0.0) {
                Intent intent = new Intent(MainActivity.this.getApplicationContext(), OrderSummary.class);
                startActivity(intent);
            }

        } catch (UnknownHostException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            response = "UnknownHostException: " + e.toString();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            response = "IOException: " + e.toString();
        } finally {

            if (socket != null) {
                try {
                    socket.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    @Override
    protected void onPostExecute(Void result) {

        super.onPostExecute(result);
    }

}

@Override
protected void onDestroy() {
    super.onDestroy();

    if (clientSocket != null) {
        try {
            clientSocket.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}

private class SocketClientReadThread extends Thread {
    private Socket hostThreadSocket;

    String message;

    SocketClientReadThread(Socket socket, String c) {
        hostThreadSocket = socket;
        message = c;
    }
    @Override
    public void run() {
        OutputStream outputStream;

        try {

            BufferedReader inFromServer = new BufferedReader(new InputStreamReader(hostThreadSocket.getInputStream()));
            response= inFromServer.readLine();

            MainActivity.this.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    textResponse.setText(response);
                }
            });

            response= inFromServer.readLine();


            MainActivity.this.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    textResponse.setText(response);
                }
            });
        } catch (IOException e) {

            e.printStackTrace();
            message += "Something wrong! " + e.toString() + "\n";
        }
    }
}
}

---

你能提供一些你尝试过的代码和得到的结果吗？@RakibulHaq请检查编辑过的代码部分。我只发布了相关部分。代码可以正确编译和运行，但在“活动”屏幕中看不到任何输出。非常感谢。按下连接按钮时，是否可以提供

logcat

日志？出于好奇，您为什么要在同一个应用程序中使用

socket

，将数据从一个

活动

发送到另一个活动？@RakibulHaq我正在从服务器获取数据，我没有在这里发布代码。只有一部分数据将显示在第一个活动中，其余数据将显示在第二个活动中。我只是尝试传输套接字对象并打开一个新的数据流进行读取，但失败了。我找到了解决这个问题的方法，这个问题已经得到了回答。非常感谢Rakibul。我在这里找到了解决方案：。这个问题是重复的。请转到此链接。

  public class OrderSummary extends AppCompatActivity {
    TextView prep;
    TextView pack;
    TextView ready;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_order_summary);

    TextView prep = (TextView) findViewById(R.id.preparing);
    TextView pack = (TextView) findViewById(R.id.packaging);
    TextView ready = (TextView) findViewById(R.id.ready);
    ready.setText("predators");

    OrderSummary.MyTask myTask = new OrderSummary.MyTask();
    myTask.execute();

}

public class MyTask extends AsyncTask<Void, Void, Void>{
    @Override
    protected Void doInBackground(Void... arg0){
        System.out.println("background");
        try {
            BufferedReader inFromServer = new BufferedReader(new InputStreamReader(SocketHandler.getSocket().getInputStream()));

            final String prep1 = inFromServer.readLine();
            final String pack1 = inFromServer.readLine();
            final String ready1 = inFromServer.readLine();
            OrderSummary.this.runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    prep.setText(prep1);
                    pack.setText(pack1);
                    ready.setText("predators");
                }
            });


        }catch(IOException e){}

        return null;

    }
    @Override
    protected void onPostExecute(Void result) {

        super.onPostExecute(result);
    }

}

}

04-22 06:58:33.415 28714-28725/? I/zygote: Background concurrent copying GC freed 4134(2MB) AllocSpace objects, 0(0B) LOS objects, 61% free, 958KB/2MB, paused 4.538ms total 246.184ms
04-22 06:59:36.811 28714-28725/com.example.ashwa.testclient I/zygote: Background concurrent copying GC freed 277(277KB) AllocSpace objects, 0(0B) LOS objects, 49% free, 2MB/4MB, paused 79.877ms total 1.690s
04-22 06:59:37.308 28714-29208/com.example.ashwa.testclient I/System.out: background