Androidクライアント：Looper.prepare（）を呼び出していないスレッド内でハンドラを作成できません

Question

私はPythonサーバーとJavaクライアントから次のコードを取得しています。しかし、私はこの同じコンセプトを使用して、アンドロイドからsslを使ってクライアントからテキストメッセージを送信したいと考えています。以下は私がPythonとJava用に書いたコードですが、うまく動作します。

Pythonのサーバーコード：

import time 
import glob 
import os 
import ssl, socket 
from sh import ls 


class serverText(): 

    host = "" 
    def __init__(self, host, port): 
     self.host = host 
     self.port = port 


    def wavFinder(self): 
     try: 
      newest = max(glob.iglob('*.[Ww][Aa][Vv]'), key=os.path.getctime) 
      yield 
     finally: 
      print "no wav file here" 


    def find_all(self, a_str, sub): 
     start = 0 
     while True: 
      start = a_str.find(sub, start) 
      if start == -1: return 
      yield start 
      start += len(sub) 

    def get_IP_Edison(self,value=basestring): 
     IP = os.popen(value).read() 
     try : 
      place = int(list(serverText.find_all(self, IP,":"))[1]+1) 
     except: 
      place = int(list(serverText.find_all(self, IP, ":"))[0] + 1) 
     self.host = IP[place:-1] 
     # return IP[tag1 + 1:tag2] 

    def deal_with_client(self,connstream): 
     timestr = time.strftime("%Y-%m-%d_%H-%M-%S") 
     data = connstream.recv(1024) 
     print data 
     # null data means the client is finished with us 
     while data: 
      if not data: 
       print 'no more data being sent' 
       break 
      data = connstream.recv(1024) 
      print data 
      # finished with client 

    def start_Server(self): 

     # calling the client context to loaded with 
     context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH) 

     # CONFIGS-------- 
     # Key and cert created with OPENSSL 
     key, cert = "/home/root/Coding/certificates/server/privKey.key", \ 
        "/home/root/Coding/certificates/server/server.pem" 

     # Load the certifications 
     context.load_cert_chain(certfile=cert, keyfile=key) 

     # calling the port and host/needs to be of the edison 
     HOST = self.host 
     PORT = self.port 
     # create a normal socket 
     bindsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
     # Bind the socket or create it 
     bindsocket.bind((HOST, PORT)) 
     # make the socket listen on five connections 
     bindsocket.listen(1) 
     print 'Listening..on IP:' + str(HOST) + " and port:" + str(PORT) 

     # accept the connection 
     newsocket, fromaddr = bindsocket.accept() 
     print 'accepted connection from' + str(fromaddr) 
     # wrap it in socket but make sure keys match 
     connstream = context.wrap_socket(newsocket, server_side=True, 
             do_handshake_on_connect=True) 
     try: 
      # call the receive function to receive file (more details above) 
      serverText.deal_with_client(self,connstream=connstream) 
     finally: 
      connstream.shutdown(socket.SHUT_RDWR) 
      connstream.close() 
      print 'socket was closed' 


if __name__ == '__main__': 
    startServer = serverText(host="",port=5000) 
    value_school = '''ifconfig | grep "inet " | grep -v 127.0.0.1 | grep -v 192.* | awk '{print $2}' ''' 
    #value_home = '''ifconfig | grep "inet " | grep -v 127.* | awk '{print $2}' ''' 
    startServer.get_IP_Edison(value=value_school) 
    print 'host is : '+ startServer.host 
    print ls() 
    startServer.wavFinder() 
    startServer.start_Server() 

これは私のJavaコードです：

Button sendButton; 
    EditText textSend; 
    private String ip_address = "192.168.10.103"; 
    private int port = 5000; 


    private SSLSocket socket = null; 
    private BufferedWriter out = null; 
    private BufferedReader in = null; 
    private final String TAG = "TAG"; 
    private char keystorepass[] = "......".toCharArray(); 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     sendButton = (Button) findViewById(R.id.send); 
     textSend = (EditText) findViewById(R.id.textsend); 

     sendButton.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       String send = textSend.getText().toString(); 
       if(send.isEmpty()){ 
        AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(MainActivity.this); 
        dialogBuilder.setMessage("Enter Text!"); 
        dialogBuilder.setTitle("No TEXT"); 
        dialogBuilder.setPositiveButton("OK...", null); 
        dialogBuilder.show(); 
       }else{ 
        try { 
         KeyStore ks = KeyStore.getInstance("BKS"); 
         InputStream keyin = getApplicationContext().getResources().openRawResource(R.raw.androidnewkey); 
         ks.load(keyin, keystorepass); 
         Log.i(TAG,"2"); 
         SSLSocketFactory socketFactory = new SSLSocketFactory(ks); 
         socketFactory.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); 
         socket = (SSLSocket) 
           socketFactory.createSocket(new Socket(ip_address,port), ip_address, port, false); 
         socket.startHandshake(); 
         out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())); 
         in = new BufferedReader(new InputStreamReader(socket.getInputStream())); 

         chat(send); 

        }catch (KeyStoreException e){ 
         Log.i(TAG,"KeyStor"); 
        }catch (IOException r){ 
         Log.i(TAG,"IO"); 
        }catch(NoSuchAlgorithmException r){ 
         Log.i(TAG,"No all"); 
        }catch (CertificateException u){ 
         Log.i(TAG,"CertEx"); 
        }catch(KeyManagementException r){ 
         Log.i(TAG,"eyEx"); 
        }catch(UnrecoverableKeyException e){ 
         Log.i(TAG,"UnrectEx"); 
        } 
       } 
      } 
     }); 
    } 
    public void chat(String temp){ 
     String message = temp; 
     String line = ""; 
     // send id of the device to match with the image 
     try { 
      out.write(message+"\n"); 
      out.flush(); 
     } catch (IOException e2) { 
      Log.i(TAG,"Read failed"); 
      System.exit(1); 
     } 
     // receive a ready command from the server 
//  try { 
//   line = in.readLine(); 
//   mResponse.setText("SERVER SAID: "+line); 
//   //Log.i(TAG,line); 
//  } catch (IOException e1) { 
//   Log.i(TAG,"Read failed"); 
//   System.exit(1); 
//  } 
    } 

：

import java.io.*; 
import java.net.*; 
import java.security.*; 

import javax.net.ssl.SSLSocketFactory; 

import com.sun.net.ssl.SSLContext; 
import com.sun.net.ssl.TrustManagerFactory; 
import com.sun.net.ssl.TrustManager; 

public class test { 

    private static final String HOST = "192.168.0.103"; 

    private static final int PORT = 5000; 
    final static String pathToStores = "/Users/admirmonteiro/Documents/Coding/Python/Thesis_Code/_Codes_/_Code_/Fall_15/fileTransmissionFiles/certs"; 
    final static String trustStoreFile = "cert.jks" ; // filename 


    public static void main(String[] args) throws Exception { 

     String currentDirectory; 
     currentDirectory = System.getProperty("user.dir"); 
     System.out.println("Current working directory : "+currentDirectory); 

     String trustFileName = pathToStores + "/" + trustStoreFile; 

     char[] passphrase = "admir2006".toCharArray(); 
     KeyStore keystore = KeyStore.getInstance("JKS"); 
     keystore.load(new FileInputStream(trustFileName), passphrase); 

     TrustManagerFactory tmf = TrustManagerFactory.getInstance("SunX509"); 
     tmf.init(keystore); 

     SSLContext context = SSLContext.getInstance("TLS"); 
     TrustManager[] trustManagers = tmf.getTrustManagers(); 

     context.init(null, trustManagers, null); 

     SSLSocketFactory sf = context.getSocketFactory(); 

     Socket s = sf.createSocket(HOST, PORT); 

     OutputStream out = s.getOutputStream(); 
     out.write("\n New Thing sent .\n\n".getBytes()); 


     out.close(); 
     s.close(); 
    } 
} 

私は更新、次のアンドロイドのコードが、まだ持っエラーを持っています私は送信するメッセージを入力し、ここに出力（ソケットを作る問題：なぜですか？）：

Process: com.example.admirmonteiro.client, PID: 13539 
android.os.NetworkOnMainThreadException                               
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273) 
at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:110) 
at libcore.io.IoBridge.connectErrno(IoBridge.java:137) 
at libcore.io.IoBridge.connect(IoBridge.java:122) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:183) 
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:163) 
at java.net.Socket.startupSocket(Socket.java:592) 
at java.net.Socket.tryAllAddresses(Socket.java:128) 
at java.net.Socket.<init>(Socket.java:178) 
at java.net.Socket.<init>(Socket.java:150) 
at com.example.admirmonteiro.client.MainActivity$1.onClick(MainActivity.java:70) 
at android.view.View.performClick(View.java:5204) 
at android.view.View$PerformClick.run(View.java:21153) 
at android.os.Handler.handleCallback(Handler.java:739) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:148) 
at android.app.ActivityThread.main(ActivityThread.java:5417) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

Answer 1

Looper.prepare()が呼び出されていない限り、BGスレッドからトーストすることはできません。 AsyncTaskの考え方は、doInBackground()で長時間実行する操作を実行してから、UIをonPostExecute()に更新することです。 Toast.makeText()をonPostExecute()に移動します。

onPostExecute()をデバッグする必要がある場合は、LogではなくToastを使用してください。