我很新的android和java编程,我需要你的帮助。我想在PC上创建Android客户端和服务器(Windows 7)。我用腻子(一个模仿客户的程序(没有编程错误^^))检查我的服务器是否编程没有错误。从而我认识到我的服务器编程正确。Android套接字客户端没有发送和关闭自己
在这里你可以看到我的工作良好的服务器:
public class MyServer {
public static void main (String[] args) throws IOException {
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(4449);
System.out.println("Listening on port: 4449");
} catch (IOException e){
System.err.println("Could not listen on port 4449.");
System.exit(1);
}
Socket clientSocket = null;
try {
clientSocket = serverSocket.accept();
System.out.println("Got connection.");
} catch (IOException e) {
System.err.println("Accept failed: 4449.");
System.exit(1);
}
BufferedReader in = null;
PrintWriter out = null;
try {
in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
out = new PrintWriter(clientSocket.getOutputStream(), true);
} catch (IOException e) {
System.err.println("Read failed");
e.printStackTrace();
}
try {
System.out.println("message: " + in.readLine());
out.println("hab was bekommen!");
} catch (IOException e) {
System.err.println("Can't get a message from Client.");
e.printStackTrace();
}
}
}
我也试图为这个服务器创建一个Android客户端,但我没有管理它。
这里是我的Mainactivity:
public class AndroidClient extends Activity {
EditText textOut;
TextView textIn;
TextView problems;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_android_client);
textOut = (EditText)findViewById(R.id.textout);
Button buttonSend = (Button)findViewById(R.id.send);
textIn = (TextView)findViewById(R.id.textin);
problems = (TextView)findViewById(R.id.problems);
buttonSend.setOnClickListener(buttonSendOnClickListener);
}
Button.OnClickListener buttonSendOnClickListener
= new Button.OnClickListener() {
@Override
public void onClick(View arg0) {
//TODO Auto-generated method stub
Socket client = null;
BufferedReader in = null;
PrintWriter out = null;
try {
client = new Socket("192.168.2.107", 4449);
in = new BufferedReader(new InputStreamReader(client.getInputStream()));
out = new PrintWriter(client.getOutputStream(), true);
} catch (UnknownHostException e) {
problems.setText("Unknown host: 192.168.2.107");
} catch (IOException e) {
// System.out.println("No Input/Output.");
problems.setText("No Input/Output.");
}
try {
out.println("Hallo.");
textIn.setText(in.readLine());
} catch (IOException e) {
problems.setText("Can't send/ get message.");
}
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_android_client, menu);
return true;
}
}
到目前为止好。当我在我的android智能手机上启动我的应用程序时,应用程序无任何问题启动然后我在我的EditText字段'textOut'中输入一些东西,然后推送到'发送'按钮。然后我的屏幕变黑,应用程序自动关闭。我还在AndroidManifest.xml中粘贴了权限以进入互联网并使用访问Wifi。
我希望有人能帮助我,因为我在这个问题上工作了2天,还没有找到任何解决方案。我主要使用这个方面(http://android-er.blogspot.de/2011/01/simple-communication-using.html),当然还有其他一些方面,但是我获得了大部分信息。此外,我的源代码中没有显示错误。
随着亲切的问候,
Lukas5060
编辑:这是我的logcat:
12-28 20:21:55.929:I/dalvikvm(698):主题ID = 3:反应以信号3 12-28 20:21:56.039:I/dalvikvm(698):将堆栈轨迹写入'/data/anr/traces.txt' 12-28 20:21:56.259:I/dalvikvm(698) threadid = 3:对信号反应3 12-28 20:21:56.299:I/dalvikvm(698):将堆栈跟踪写入'/data/anr/traces.txt' 12-28 20:21:56.741:D/GRAL loc_goldfish(698):未检测到GPU仿真的仿真器。我写了一个dalvikvm(698):threadid = 3:对信号做出反应3 12-28 20:21:56.789:I/dalvikvm(698):写栈跟踪为'/ data/anr/traces.txt' 12-28 20:23:58.430:D/AndroidRuntime(698):关闭VM 12-28 20:23:58.430:W/dalvikvm(698):threadid = 1:线程退出未知的异常(组= 0x409c01f8) 12-28 20:23:58.470:E/AndroidRuntime(698):致命异常:主要 12-28 20:23:58.470:E/AndroidRuntime(698):android.os.NetworkOnMainThreadException E/AndroidRuntime(698):at android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099) 12-28 20:23:58.470:E/AndroidRuntime(698) :at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84) 12-28 20:23:58.470:E/AndroidRuntime(698):at libcore.io.IoBridge.connectErrno(IoBridge.java:127) 12-28 20:23:58.470:E/AndroidRuntime(698):at libcore.io.IoBridge.connect(IoBridge.java :112) 12-28 20:23:58.470:E/AndroidRuntime(698):at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192) 12-28 20:23:58.470:E/AndroidRuntime(698) ):at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) 12-28 20:23:58.470:E/AndroidRuntime(698):at java.net.Socket.startupSocket(Socket.java:566) 12-28 20:23:58.470:E/AndroidRuntime(698):在java.net.Socket.tryAllAddresses(Socket.java:127) 12-28 20:23:58.470:E/AndroidRuntime(698):在java .net.Socket(插座。java:177) 12-28 20:23:58.470:E/AndroidRuntime(698):at java.net.Socket。(Socket.java:149) 12-28 20:23:58.470:E/AndroidRuntime(698) ):at net.ibasic.AndroidClient $ 1.onClick(AndroidClient.java:50) 12-28 20:23:58.470:E/AndroidRuntime(698):at android.view.View.performClick(View.java:3511) E/AndroidRuntime(698):at android.view.View $ PerformClick.run(View.java:14105) 12-28 20:23:58.470:E/AndroidRuntime(698) :at android.os.Handler.handleCallback(Handler.java:605) 12-28 20:23:58.470:E/AndroidRuntime(698):at android.os.Handler.dispatchMessage(Handler.java:92) 12 -28 20:23:58.470:E/AndroidRuntime(698):在android.os.Looper.loop(Looper.java:137) 12-28 20:23:58.470:E/AndroidRuntime(698):在android。 app.ActivityThread.main (ActivityThread.java:4424) 12-28 20:23:58.470:E/AndroidRuntime(698):at java.lang.reflect.Method.invokeNative(Native Method) 12-28 20:23:58.470:E/AndroidRuntime(698):at java.lang.reflect.Method.invoke(Method.java:511) 12-28 20:23:58.470:E/AndroidRuntime(698):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:784) 12-28 20:23:58.470:E/AndroidRuntime(698):at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 12-28 20:23:58.470:E/AndroidRuntime(698):at dalvik.system.NativeStart.main(Native Method) 12-28 20:23:59.070:I/dalvikvm(698):threadid = 3:对信号3 12-28 20:23:59.100:I/dalvikvm(698):将堆栈跟踪写入'/data/anr/traces.txt' 12-28 20:24:02.420:I/Process(698):发送si gnal。 PID:698 SIG:9
如果发生这种情况,你通常会从logcat得到一些错误输出,你可以发布它吗? –
我更改了ip并使用android sdk在我的电脑上运行它。这里是我的logcat。我希望你能看到我的错误。 – Lukas5060