我正在尝试在 mygalaxy tab
和 my之间建立联系laptop
。所以我试图在我的笔记本电脑上运行服务器活动,在我的选项卡上运行客户端活动,但它不起作用。这是服务器和客户端代码。错误在哪里?
服务器:
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView txt = (TextView)findViewById(R.id.textView1);
int port = 12345;
byte [] message = new byte [1500];
DatagramPacket p = new DatagramPacket (message,message.length);
try {
InetAddress serveraddr = InetAddress.getByName("192.168.1.116");
DatagramSocket s = new DatagramSocket (port,serveraddr);
while (true){
s.receive(p);
String text = new String (message,0,p.getLength());
txt.setText(text);
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
客户:
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText edt = (EditText)findViewById(R.id.editText1);
Button btn = (Button)findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
String msg = edt.getText().toString();
int port = 12345;
try {
DatagramSocket s = new DatagramSocket();
InetAddress local = InetAddress.getByName("192.168.1.116");
int msg_lenght = msg.length();
byte []message = msg.getBytes();
DatagramPacket p = new DatagramPacket(message,msg_lenght,local,port);
s.send(p);
} catch (SocketException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
这是日志:
09-17 23:49:55.190:D/dalvikvm(5892):后期启用 CheckJNI 09-17 23:49:55.690:D/CLIPBOARD(5892):在开始输入时隐藏剪贴板对话框:由其他人完成... !09-17 23:49:59.590: D/AndroidRuntime(5892): 关闭 VM 09-17 23:49:59.590: W/dalvikvm(5892): threadid=1: 线程退出未捕获异常 (group=0x40c4f1f8) 09 -17 23:49:59.590: E/AndroidRuntime(5892): 致命异常: main 09-17 23:49:59.590: E/AndroidRuntime(5892): android.os.NetworkOnMainThreadException 09-17 23:49:59.590: E /AndroidRuntime(5892): 在 android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1099) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 libcore.io.BlockGuardOs.sendto(BlockGuardOs. java:175) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 libcore.io.IoBridge.sendto(IoBridge.java:463) 09-17 23:49:59。137) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 android.app.ActivityThread.main(ActivityThread.java:4507) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在java.lang.reflect.Method.invokeNative(Native Method) 09-17 23:49:59.590: E/AndroidRuntime(5892): at java.lang.reflect.Method.invoke(Method.java:511) 09-17 23 :49:59.590: E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745) 09-17 23:49:59.590: E/AndroidRuntime(5892): at dalvik.system.NativeStart.main(Native Method) 09-17 23 :50:34.320:I / Process(5892):发送信号。PID:5892 SIG:9 4507) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 java.lang.reflect.Method.invokeNative(Native Method) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 java .lang.reflect.Method.invoke(Method.java:511) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 978) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745) 09-17 23:49:59.590: E/AndroidRuntime( 5892): 在 dalvik.system.NativeStart.main(Native Method) 09-17 23:50:34.320: I/Process(5892): 发送信号。PID:5892 SIG:9 4507) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 java.lang.reflect.Method.invokeNative(Native Method) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 java .lang.reflect.Method.invoke(Method.java:511) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 978) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745) 09-17 23:49:59.590: E/AndroidRuntime( 5892): 在 dalvik.system.NativeStart.main(Native Method) 09-17 23:50:34.320: I/Process(5892): 发送信号。PID:5892 SIG:9 E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal .os.ZygoteInit.main(ZygoteInit.java:745) 09-17 23:49:59.590: E/AndroidRuntime(5892): at dalvik.system.NativeStart.main(Native Method) 09-17 23:50:34.320: I/Process(5892):发送信号。PID:5892 SIG:9 E/AndroidRuntime(5892): 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:978) 09-17 23:49:59.590: E/AndroidRuntime(5892): 在 com.android.internal .os.ZygoteInit.main(ZygoteInit.java:745) 09-17 23:49:59.590: E/AndroidRuntime(5892): at dalvik.system.NativeStart.main(Native Method) 09-17 23:50:34.320: I/Process(5892):发送信号。PID:5892 SIG:9