1

我正在开发一个从蓝牙传感器接收数据的应用程序,我需要将该数据传递给在本地机器上运行的服务器套接字。接收到的数据大约是每秒 40 条消息。

首先,首先我尝试通过为每次写入使用单独的 AsyncTask 来解决它,打开套接字,写入数据并关闭套接字,它工作正常,但引发了一些性能问题,所以我不得不找到另一个解决方案。

我编写了一个服务来保持套接字连接处于活动状态,但是当我尝试将数据写入套接字时,每次写入都会出现管道损坏异常。

这是该服务的代码:

public class SocketService extends Service {
public static final String SERVERIP = "10.64.64.197";
public static final int SERVERPORT = 4444;
private DataOutputStream out;
private Socket socket;

private final IBinder mBinder = new LocalBinder();

public class LocalBinder extends Binder {
    SocketService getService() {
        return SocketService.this;
    }
}

@Override
public IBinder onBind(Intent intent) {
    return mBinder;
}

@Override
public void onCreate() {
    super.onCreate();
    Runnable connect = new connectSocket();
    new Thread(connect).start();
}

public void sendMessage(byte[] message) {
    try {
        out.write(message);
        out.flush();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

class connectSocket implements Runnable {
    @Override
    public void run() {
        try {
            Log.e("connectSocket", "Connecting...");
            socket = new Socket(SERVERIP, SERVERPORT);
            try {
                out = new DataOutputStream(socket.getOutputStream());
                Log.e("connectSocket", "Done.");
            } catch (Exception e) {
                Log.e("connectSocket", "Error", e);
            }
        } catch (Exception e) {
            Log.e("connectSocket", "Error", e);
        }
    }
}

@Override
public void onDestroy() {
    super.onDestroy();
    try {
        socket.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    socket = null;
}

以及我调用 sendMessage 方法的代码:

if (action.equals(UartService.ACTION_DATA_AVAILABLE)) {
    final byte[] txValue = intent.getByteArrayExtra(UartService.EXTRA_DATA);
    try {
        mSocketService.sendMessage(txValue);
    } catch (Exception e) {
        Log.e(TAG, "data_available");
    }
}

我现在坚持了一段时间,所以任何帮助将不胜感激!

4

0 回答 0