Android客户端和服务器端编程
我正在尝试运行我在网上找到的服务器端和客户端示例。 这是服务器：Android客户端和服务器端编程,android,sockets,android-networking,Android,Sockets,Android Networking,我正在尝试运行我在网上找到的服务器端和客户端示例。 这是服务器： public class ServerActivity extends Activity { private TextView serverStatus; private TextView serverStatus2; // DEFAULT IP public static String SERVERIP = "10.100.102.15"; // DESIGNAT
public class ServerActivity extends Activity {
private TextView serverStatus;
private TextView serverStatus2;
// DEFAULT IP
public static String SERVERIP = "10.100.102.15";
// DESIGNATE A PORT
public static final int SERVERPORT = 8080;
private Handler handler = new Handler();
private ServerSocket serverSocket;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_server);
serverStatus = (TextView) findViewById(R.id.server_status);
serverStatus2 = (TextView) findViewById(R.id.server_status2);
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);
}
});
serverSocket = new ServerSocket(SERVERPORT);
while (true) {
// LISTEN FOR INCOMING CLIENTS
Socket client = serverSocket.accept();
handler.post(new Runnable() {
@Override
public void run() {
serverStatus2.setText("Connected.");
}
});
try {
BufferedReader in = new BufferedReader(
new InputStreamReader(
client.getInputStream()));
String line = null;
while ((line = in.readLine()) != null) {
Log.d("ServerActivity", line);
handler.post(new Runnable() {
@Override
public void run() {
// DO WHATEVER YOU WANT TO THE FRONT END
// THIS IS WHERE YOU CAN BE CREATIVE
}
});
}
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 (final Exception e) {
handler.post(new Runnable() {
@Override
public void run() {
serverStatus.setText("Error" + e.getMessage());
}
});
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();
}
}
}
Android Launch!
adb is running normally.
Performing com.example.server.ServerActivity activity launch
Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'android2.3'
Uploading server.apk onto device 'emulator-5554'
Installing server.apk...
Success!
Starting activity com.example.server.ServerActivity on device emulator-5554
ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.server/.ServerActivity }
------------------------------
Android Launch!
adb is running normally.
Performing com.example.client.ClientActivity activity launch
Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'android2.3'
Application already deployed. No need to reinstall.
Starting activity com.example.client.ClientActivity on device emulator-5554
ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.client/.ClientActivity }
08-08 13:04:38.165: D/ClientActivity(360): C: Connecting...
08-08 13:04:38.176: E/ClientActivity(360): C: Error
08-08 13:04:38.176: E/ClientActivity(360): java.net.ConnectException: /10.0.2.15:50907 - Connection refused
08-08 13:04:38.176: E/ClientActivity(360): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:207)
08-08 13:04:38.176: E/ClientActivity(360): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
08-08 13:04:38.176: E/ClientActivity(360): at java.net.Socket.startupSocket(Socket.java:705)
08-08 13:04:38.176: E/ClientActivity(360): at java.net.Socket.<init>(Socket.java:263)
08-08 13:04:38.176: E/ClientActivity(360): at com.example.client.ClientActivity$ClientThread.run(ClientActivity.java:58)
08-08 13:04:38.176: E/ClientActivity(360): at java.lang.Thread.run(Thread.java:1019)
08-08 13:04:40.456: W/IInputConnectionWrapper(360): showStatusIcon on inactive > > > InputConnection
Android Launch!
adb is running normally.
Performing com.example.server.ServerActivity activity launch
Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'android2.3'
Uploading server.apk onto device 'emulator-5554'
Installing server.apk...
Success!
Starting activity com.example.server.ServerActivity on device emulator-5554
ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.server/.ServerActivity }
------------------------------
Android Launch!
adb is running normally.
Performing com.example.client.ClientActivity activity launch
Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'android2.3'
Application already deployed. No need to reinstall.
Starting activity com.example.client.ClientActivity on device emulator-5554
ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.client/.ClientActivity }
08-08 13:04:38.165: D/ClientActivity(360): C: Connecting...
08-08 13:04:38.176: E/ClientActivity(360): C: Error
08-08 13:04:38.176: E/ClientActivity(360): java.net.ConnectException: /10.0.2.15:50907 - Connection refused
08-08 13:04:38.176: E/ClientActivity(360): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:207)
08-08 13:04:38.176: E/ClientActivity(360): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:183)
08-08 13:04:38.176: E/ClientActivity(360): at java.net.Socket.startupSocket(Socket.java:705)
08-08 13:04:38.176: E/ClientActivity(360): at java.net.Socket.<init>(Socket.java:263)
08-08 13:04:38.176: E/ClientActivity(360): at com.example.client.ClientActivity$ClientThread.run(ClientActivity.java:58)
08-08 13:04:38.176: E/ClientActivity(360): at java.lang.Thread.run(Thread.java:1019)
08-08 13:04:40.456: W/IInputConnectionWrapper(360): showStatusIcon on inactive > > > InputConnection
08-08 13:04:38.165:D/客户端活动（360）：C:连接。。。
08-08 13:04:38.176:E/客户端活动（360）：C:错误
08-08 13:04:38.176:E/ClientActivity（360）：java.net.ConnectException:/10.0.2.15:50907-连接被拒绝
08-08 13:04:38.176:E/ClientActivity（360）：位于org.apache.harmony.luni.net.PlainSocketImpl.connect（PlainSocketImpl.java:207）
08-08 13:04:38.176:E/ClientActivity（360）：位于org.apache.harmony.luni.net.PlainSocketImpl.connect（PlainSocketImpl.java:183）
08-08 13:04:38.176:E/ClientActivity（360）：位于java.net.Socket.startupSocket（Socket.java:705）
08-08 13:04:38.176:E/ClientActivity（360）：位于java.net.Socket（Socket.java:263）
08-08 13:04:38.176:E/ClientActivity（360）：在com.example.client.ClientActivity$ClientThread.run（ClientActivity.java:58）
08-08 13:04:38.176:E/ClientActivity（360）：在java.lang.Thread.run（Thread.java:1019）中
08-08 13:04:40.456:W/IIInputConnectionWrapper（360）：显示非活动状态图标>>>输入连接
- 如果您在模拟器上运行应用程序，请使用IP地址作为您的计算机IP地址，不要选择自己作为“10.100.102.15”
- 关于端口，请选择另一个端口，如50907或类似的端口（远离已知端口，如8080，通常用作INTERNET端口）
问题是defaul的android emulator实例只能与自身和以太网交互，因此不同的实例不能相互联网。
如果要执行此操作，首先必须在实例中设置重定向。
阅读本页，它有助于像。。。很多：D请发布堆栈跟踪异常，以帮助缩小问题的范围。不，更改端口没有帮助（我尝试了几个，包括您的），另外在onCreate（）中，我使用函数getLocalIpAddress（）初始化ip；这是通过代码实现的。您是否在同一个模拟器上同时运行服务器和客户端？我猜服务器和客户端是完全不同的应用程序？如果是这样，那么当您启动客户端应用程序时，服务器已经运行以下代码：`@Override protected void onStop（）{super.onStop（）；尝试{//确保在退出serverSocket.CLOSE（）；}catch（IOException e）{e.printStackTrace（）; } } `. 此时，套接字关闭，客户端无法连接到。请在同一网络上的两个不同设备上运行！这没有帮助，我尝试的过程如下：，，嗯，正如我在另一篇文章中看到的，你能将你的服务器IP地址设置为本地主机IP地址（127.0.0.1）或开发机器IP地址（10.0.2.2），然后再试一次吗。希望这次能奏效。加油，兄弟！