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[英]Java socket connection - how to set a timeout when connecting server restarts
[英]Connecting to server restarts application
我在計算機上設置了Java服務器,在Android手機上設置了客戶端。 但是,當我啟動該應用程序並轉到與客戶端打交道的活動時,它將重新啟動該應用程序回到第一個活動。 執行客戶端方法時會發生這種情況。
客戶端代碼是這個
public class ServerInterface extends Activity {
private Socket client;
private PrintWriter printwriter;
private EditText textField;
private Button button;
private String message = "test1";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_server_interface);
sendCommand("test");
}
public void sendCommand(String command) {
try {
client = new Socket("192.168.100.50", 43596); //Connect to PC server
printwriter = new PrintWriter(client.getOutputStream(), true);
printwriter.write(command);
printwriter.flush();
printwriter.close();
client.close(); //closing the connection
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
我不知道這里出了什么問題。 謝謝。
您必須在異步線程中運行網絡。 Android不允許在主線程上使用它(放置在要使用它的類中)
private class Connect extends AsyncTask<String, Integer, Boolean> {
protected Boolean doInBackground(String... urls) {
try {
client = new Socket("192.168.100.50", 43596); //Connect to PC server
printwriter = new PrintWriter(client.getOutputStream(), true);
printwriter.write(command);
printwriter.flush();
printwriter.close();
client.close(); //closing the connection
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
}
然后進行聯網:
new Connect().execute("nullable unless used for dynamic links");
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