我已经使用套接字编程为Android创建了一个聊天系统，当两个或多个设备在同一个WiFi /网络中时，系统工作正常，但是当我关闭WiFi并在一个设备上打开移动数据时该设备没有＆ ＃39; t接收消息。有人可以帮我解决这个问题。
static final int SocketServerPORT = 8181;
LinearLayout loginPanel, chatPanel;
Button buttonSend;
String msgLog = "";
ChatClientThread chatClientThread = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cliyent);
loginPanel = (LinearLayout)findViewById(R.id.loginpanel);
chatPanel = (LinearLayout)findViewById(R.id.chatpanel);
buttonSend = (Button)findViewById(R.id.send);
buttonSend.setOnClickListener(buttonSendOnClickListener);
}
OnClickListener buttonSendOnClickListener = new OnClickListener() {
@Override
public void onClick(View v) {
String ip ="192.168.1.10";
chatClientThread = new ChatClientThread("Dhanushka", ip, SocketServerPORT);
chatClientThread.start();
System.out.println("plz givme curent location");
chatClientThread.sendMsg("plz givme curent location " + "\n");
}
};
private class ChatClientThread extends Thread {
String name;
String dstAddress;
int dstPort;
String msgToSend = "";
boolean goOut = false;
ChatClientThread(String name, String address, int port) {
this.name = name;
dstAddress = address;
dstPort = port;
}
@Override
public void run() {
Socket socket = null;
DataOutputStream dataOutputStream = null;
DataInputStream dataInputStream = null;
try {
socket = new Socket(dstAddress, dstPort);
dataOutputStream = new DataOutputStream(
socket.getOutputStream());
dataInputStream = new DataInputStream(socket.getInputStream());
dataOutputStream.writeUTF(name);
dataOutputStream.flush();
while (!goOut) {
if (dataInputStream.available() > 0) {
msgLog += dataInputStream.readUTF();
Cliyent.this.runOnUiThread(new Runnable() {
@Override
public void run() {
System.out.println("msgLog"+msgLog);
}
});
}
if(!msgToSend.equals("")){
dataOutputStream.writeUTF(msgToSend);
dataOutputStream.flush();
msgToSend = "";
}
}
} catch (UnknownHostException e) {
e.printStackTrace();
final String eString = e.toString();
Cliyent.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(Cliyent.this, eString, Toast.LENGTH_LONG).show();
}
});
} catch (IOException e) {
e.printStackTrace();
final String eString = e.toString();
Cliyent.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(Cliyent.this, eString, Toast.LENGTH_LONG).show();
}
});
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Cliyent.this.runOnUiThread(new Runnable() {
@Override
public void run() {
}
});
}
}
private void sendMsg(String msg){
msgToSend = msg;
}
}
}
Sever部分
public class MainActivity extends ActionBarActivity {
static final int SocketServerPORT = 8080;
TextView infoIp, infoPort, chatMsg;
String msgLog = "";
List<ChatClient> userList;
ServerSocket serverSocket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
infoIp = (TextView) findViewById(R.id.infoip);
infoPort = (TextView) findViewById(R.id.infoport);
chatMsg = (TextView) findViewById(R.id.chatmsg);
infoIp.setText(getIpAddress());
userList = new ArrayList<ChatClient>();
ChatServerThread chatServerThread = new ChatServerThread();
chatServerThread.start();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (serverSocket != null) {
try {
serverSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class ChatServerThread extends Thread {
@Override
public void run() {
Socket socket = null;
try {
serverSocket = new ServerSocket(SocketServerPORT);
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
infoPort.setText("I'm waiting here: "
+ serverSocket.getLocalPort());
}
});
while (true) {
socket = serverSocket.accept();
ChatClient client = new ChatClient();
userList.add(client);
ConnectThread connectThread = new ConnectThread(client, socket);
connectThread.start();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
private class ConnectThread extends Thread {
Socket socket;
ChatClient connectClient;
String msgToSend = "";
ConnectThread(ChatClient client, Socket socket){
connectClient = client;
this.socket= socket;
client.socket = socket;
client.chatThread = this;
}
@Override
public void run() {
DataInputStream dataInputStream = null;
DataOutputStream dataOutputStream = null;
try {
dataInputStream = new DataInputStream(socket.getInputStream());
dataOutputStream = new DataOutputStream(socket.getOutputStream());
String n = dataInputStream.readUTF();
connectClient.name = n;
msgLog += connectClient.name + " connected@" + connectClient.socket.getInetAddress() + ":" + connectClient.socket.getPort() + "\n";
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
// chatMsg.setText(msgLog);
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle(msgLog);
// set dialog message
alertDialogBuilder
.setMessage(msgLog)
.setCancelable(false)
.setPositiveButton("Available",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
}
})
.setNegativeButton("Curent Location",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
dialog.cancel();
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
});
dataOutputStream.writeUTF("Welcome " + n + "\n");
dataOutputStream.flush();
broadcastMsg(n + " join our chat.\n");
while (true) {
if (dataInputStream.available() > 0) {
String newMsg = dataInputStream.readUTF();
msgLog += n + ": " + newMsg;
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
chatMsg.setText(msgLog);
}
});
broadcastMsg(n + ": " + newMsg);
}
if(!msgToSend.equals("")){
dataOutputStream.writeUTF(msgToSend);
dataOutputStream.flush();
msgToSend = "";
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (dataInputStream != null) {
try {
dataInputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (dataOutputStream != null) {
try {
dataOutputStream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
userList.remove(connectClient);
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this,
connectClient.name + " removed.", Toast.LENGTH_LONG).show();
msgLog += "-- " + connectClient.name + " leaved\n";
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
chatMsg.setText(msgLog);
}
});
broadcastMsg("-- " + connectClient.name + " leaved\n");
}
});
}
}
private void sendMsg(String msg){
msgToSend = msg;
}
}
private void broadcastMsg(String msg){
for(int i=0; i<userList.size(); i++){
userList.get(i).chatThread.sendMsg(msg);
msgLog += "- send to " + userList.get(i).name + "\n";
}
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
chatMsg.setText(msgLog);
}
});
}
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
class ChatClient {
String name;
Socket socket;
ConnectThread chatThread;
}
}
答案 0 :(得分：2)
如果使用移动网络的客户端部件必须路由调制解调器，则不能再使用192.168.1.10，否则如果使用移动网络的服务器，则必须更换新的