这个问题已经在这里问了好几次了，但还没有很好的答案。所以我只是把这个问题和我的进展一起发布。我想知道是否有办法在真实设备和模拟器之间执行套接字编程。
我提到了android开发者页面：http: //developer.android.com/tools/devices/emulator.html
在两个 android 设备/以及两个模拟器之间建立通信。但是我无法将数据从android设备（客户端）发送到模拟器（作为服务器）。它们都连接到同一个网络并且能够相互ping通。
public class ServerActivity extends Activity {
private TextView serverStatus;
private Button Start;
private Button Mark;
private Button Stop;
// DEFAULT IP
public static String SERVERIP = "10.0.2.15";
// DESIGNATE A PORT
public static final int SERVERPORT = 6000;
private Handler handler = new Handler();
private ServerSocket serverSocket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
serverStatus = (TextView) findViewById(R.id.server_status);
Start = (Button)findViewById(R.id.start);
Mark = (Button)findViewById(R.id.mark);
Stop = (Button)findViewById(R.id.stop);
//SERVERIP = getLocalIpAddress();
Thread fst = new Thread(new ServerThread());
fst.start();
}
public class ServerThread implements Runnable {
public void run() {
try {
if (SERVERIP != null) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Listening on IP: " + SERVERIP +" "+ SERVERPORT);
}
});
serverSocket = new ServerSocket(SERVERPORT);
while (true) {
// LISTEN FOR INCOMING CLIENTS
final Socket client = serverSocket.accept();
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Connected.");
}
});
try {
handler.post(new Runnable() {
@Override
public void run() {
// DO WHATEVER YOU WANT TO THE FRONT END
// THIS IS WHERE YOU CAN BE CREATIVE
Log.d("ServerActivity", "S: Sending command.");
PrintWriter out;
try {
out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(client.getOutputStream())), true);
// WHERE YOU ISSUE THE COMMANDS
out.println("HeyClient!");
Log.d("ServerActivity", "S: Sent.");
Start.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
//send click command to start recording to client
}
});
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
break;
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Oops. Connection interrupted. Please reconnect your phones.");
}
});
e.printStackTrace();
}
}
} else {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Couldn't detect internet connection.");
}
});
}
} catch (Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Error");
}
});
e.printStackTrace();
}
}
}
// GETS THE IP ADDRESS OF YOUR PHONE'S NETWORK
private String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) { return inetAddress.getHostAddress().toString(); }
}
}
} catch (SocketException ex) {
Log.e("ServerActivity", ex.toString());
}
return null;
}
@Override
protected void onStop() {
super.onStop();
try {
// MAKE SURE YOU CLOSE THE SOCKET UPON EXITING
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}}
和客户端代码：
公共类 ClientActivity 扩展 Activity {
private EditText serverIp;
private TextView serverCommand;
private Button connectPhones;
private String serverIpAddress = "";
private boolean connected = false;
private Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
serverIp = (EditText) findViewById(R.id.server_ip);
connectPhones = (Button) findViewById(R.id.connect_phones);
connectPhones.setOnClickListener(connectListener);
serverCommand = (TextView)findViewById(R.id.server_commands);
}
private OnClickListener connectListener = new OnClickListener() {
@Override
public void onClick(View v) {
if (!connected) {
serverIpAddress = serverIp.getText().toString();
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
}
};
public class ClientThread implements Runnable {
public void run() {
try {
InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
Log.d("ClientActivity", "C: Connecting...");
Socket socket = new Socket(serverAddr, 80);
connected = true;
while (connected)
{
try {
String line = null;
BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
while ((line = in.readLine()) != null) {
Log.d("ClientActivity", line);
serverCommand.setText(line);
if (line == "start")
{
}
}
} catch (Exception e) {
Log.e("ClientActivity", "S: Error", e);
}
}
socket.close();
Log.d("ClientActivity", "C: Closed.");
} catch (Exception e) {
Log.e("ClientActivity", "C: Error", e);
connected = false;
}
}
}
}
我还设置了端口转发，以将来自 android 端口 80 的传入连接定向到端口 6000 的模拟器。这是使用 telnet 完成的。
出于某种原因，这一切似乎并没有让模拟器连接到传入的连接。
如果有人可以帮助我，我将不胜感激。