[英]Why do my server and client disconnect on server activity start?
我之前在不同的位置发布了这个,但很快就被否决了。 从那以后,我已经删除并尝试至少对其进行一些改进,并将其放在更合适的位置。 如果我做错了什么,请告诉我如何使帖子更清晰,我对在这个网站上发帖还是很陌生。
这里的想法是在本地网络上建立一个socket
连接,发送一些数据,然后立即关闭连接。 唯一应该保持运行的是serversocket
。 到目前为止,一切都按预期工作,除了一件事:
当启动serversocket
的活动使用后退按钮关闭,然后重新打开时,从客户端发送的数据不再发送到serversocket
。
DM活动:
public class DMActivity extends AppCompatActivity {
String ipAddress;
boolean dmListenRunning = false;
DMListen dmListen = new DMListen();
Thread dmListenThread;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dm);
if (!(dmListenRunning)) {
dmListenThread = new Thread(dmListen);
dmListenRunning = true;
dmListenThread.start();
}
}
@Override
public void onBackPressed()
{
try {
dmListen.KillThread(true);
dmListenThread.interrupt();
}
catch (Exception e)
{
Log.i("LOG", e.toString());
}
finish();
}
}
DM听:
public class DMListen implements Runnable {
ServerSocket serverSocket;
boolean started = false;
boolean closeSockets = false;
boolean killed = false;
public void run() {
ReceivePlayerData();
}
public void ReceivePlayerData() {
try {
while (!(Thread.interrupted())) {
if (!(started)) {
int port = 8080;
serverSocket = new ServerSocket(port);
started = true;
}
Socket clientSocket = serverSocket.accept();
DataInputStream dataIn = new DataInputStream(clientSocket.getInputStream());
String name;
int init;
name = dataIn.readUTF();
init = dataIn.readInt();
dataIn.close();
clientSocket.close();
}
}
catch (Exception e) {
Log.i("LOG", e.toString();
}
if(killed)
{
try {
serverSocket.close();
if (Thread.currentThread().isInterrupted())
{
try {
Thread.currentThread().join();
}
catch (Exception e)
{
Log.i("LOG", e.toString());
}
}
}
catch(IOException e)
{
Log.i("LOG", e.toString());
}
}
}
public void KillThread(boolean k)
{
boolean killed = k;
}
}
玩家活动:
public class PlayerActivity extends AppCompatActivity {
EditText hostIPBox;
Button submit;
String hostIPString;
InetAddress hostIP;
boolean denied = false;
boolean started = false;
PlayerConnect playerConnect;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_player);
hostIPBox = (EditText) findViewById(R.id.ipaddress);
hostIPBox.setRawInputType(Configuration.KEYBOARD_12KEY);
hostIPBox.setSingleLine();
submit = (Button) findViewById(R.id.submit);
submit.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
hostIPString = hostIPBox.getText().toString();
try {
if (!(hostIPString.equals(""))) {
hostIP = InetAddress.getByName(hostIPString);
if(!(started)) {
playerConnect = new PlayerConnect();
playerConnect.SetHostIP(hostIP);
denied = playerConnect.GetDenied();
started = true;
}
else {
playerConnect.SetHostIP(hostIP);
denied = playerConnect.GetDenied();
}
if (denied)
{
started = false;
}
else
{
new Thread(playerConnect).start();
}
}
}
catch (Exception e) {
Log.e("LOG", e.toString());
}
}
});
}
}
玩家连接:
public class PlayerConnect implements Runnable {
InetAddress hostIP;
boolean closeSockets = false;
boolean denied = false;
public void run() {
SendPlayerData(hostIP, playerName, playerInitiative);
}
private void SendPlayerData(InetAddress IP, String name, int init) {
try {
int port = 8080;
Socket socket = new Socket();
socket.connect(new InetSocketAddress(IP, port), 3000);
DataOutputStream output = new DataOutputStream(socket.getOutputStream());
if (socket.isConnected())
{
output.writeUTF(name);
output.writeInt(init);
output.close();
socket.close();
}
if (closeSockets) {
output.close();
socket.close();
closeSockets = false;
}
}
catch (Exception e) {
denied = true;
Log.i("LOG", e.printStackTrace());
}
}
public void SetHostIP(InetAddress host)
{
hostIP = host;
}
public boolean GetDenied()
{
return denied;
}
}
您应该使用 Service 来处理套接字连接。 Activity 生命周期不会有问题。
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