Accesso Twitter per mostrare l'errore "android.os.NetworkOnMainThreadException"

Question

ho sviluppare una application.Now sto cercando di integrare il cinguettio nel mio problema application.My è quando faccio il login l'applicazione che mostri "android.os.NetworkOnMainThreadException" "presso android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)".

si prega di uno mi aiuta grazie ...

import twitter4j.Twitter; 
import twitter4j.TwitterException; 
import twitter4j.TwitterFactory; 
import twitter4j.auth.RequestToken; 
import twitter4j.conf.ConfigurationBuilder; 
import android.app.Activity; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.net.Uri; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.Toast; 

public class TwitterActivity extends Activity { 
    static final String CONSUMER_KEY="my consumer key"; 
    static final String CONSUMER_SECRETKEY="my secret key"; 
    Button buttonLoginTwitter; 
    SharedPreferences sharedpref; 
    Twitter twitter; 
    private static RequestToken requestToken; 
    static final String TWITTER_CALLBACK_URL = "oauth://t4jsample"; 
    static final String ISTWITTERLOGIN="isTwitterLogedIn"; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_twitter); 
     buttonLoginTwitter=(Button)findViewById(R.id.btnidLogin); 
     sharedpref=getApplicationContext().getSharedPreferences("mypreference", 0); 
     TwitterLogin(); 
    } 
    private void TwitterLogin() { 
     buttonLoginTwitter.setOnClickListener(new OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       if(!istwitterLogin()) 
       { 
        ConfigurationBuilder builder = new ConfigurationBuilder(); 
        builder.setOAuthConsumerKey(CONSUMER_KEY); 
        builder.setOAuthConsumerSecret(CONSUMER_SECRETKEY); 
        twitter4j.conf.Configuration configuration=builder.build(); 
        TwitterFactory factory = new TwitterFactory(configuration); 
        twitter = factory.getInstance(); 

         try { 
          requestToken = twitter 
            .getOAuthRequestToken(TWITTER_CALLBACK_URL); 
          TwitterActivity.this.startActivity(new Intent(Intent.ACTION_VIEW, Uri 
            .parse(requestToken.getAuthenticationURL()))); 
         } catch (TwitterException e) { 
          e.printStackTrace(); 
         } 
       } 
       else { 
        Toast.makeText(getApplicationContext(),"Already Logged into twitter", Toast.LENGTH_LONG).show(); 
       } 
      } 
     }); 
    } 
    protected boolean istwitterLogin() { 
     return sharedpref.getBoolean(ISTWITTERLOGIN, false); 
    } 
    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.twitter, menu); 
     return true; 
    } 

} 

Quando ho cercando di effettuare il login ho ottenuto questo errore:

E/AndroidRuntime(5946): FATAL EXCEPTION: main 
E/AndroidRuntime(5946): android.os.NetworkOnMainThreadException 
E/AndroidRuntime(5946): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117) 
E/AndroidRuntime(5946): at java.net.InetAddress.lookupHostByName(InetAddress.java:385) 
E/AndroidRuntime(5946): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236) 
E/AndroidRuntime(5946): at java.net.InetAddress.getAllByName(InetAddress.java:214) 
E/AndroidRuntime(5946): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70) 
E/AndroidRuntime(5946): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50) 
E/AndroidRuntime(5946): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:341) 
E/AndroidRuntime(5946): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87) 
E/AndroidRuntime(5946): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128) 
E/AndroidRuntime(5946): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315) 
E/AndroidRuntime(5946): at libcore.net.http.HttpEngine.connect(HttpEngine.java:310) 
E/AndroidRuntime(5946): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289) 
E/AndroidRuntime(5946): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239) 
E/AndroidRuntime(5946): at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:80) 
E/AndroidRuntime(5946): at libcore.net.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:188) 
E/AndroidRuntime(5946): at twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:158) 
E/AndroidRuntime(5946): at twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:65) 
E/AndroidRuntime(5946): at twitter4j.internal.http.HttpClientWrapper.post(HttpClientWrapper.java:102) 
E/AndroidRuntime(5946): at twitter4j.auth.OAuthAuthorization.getOAuthRequestToken(OAuthAuthorization.java:121) 
E/AndroidRuntime(5946): at twitter4j.auth.OAuthAuthorization.getOAuthRequestToken(OAuthAuthorization.java:104) 
E/AndroidRuntime(5946): at twitter4j.TwitterBaseImpl.getOAuthRequestToken(TwitterBaseImpl.java:276) 
E/AndroidRuntime(5946): at com.androidhive.twitterconnect.MainActivity.loginToTwitter(MainActivity.java:236) 
E/AndroidRuntime(5946): at com.androidhive.twitterconnect.MainActivity.access$1(MainActivity.java:223) 
E/AndroidRuntime(5946): at com.androidhive.twitterconnect.MainActivity$1.onClick(MainActivity.java:123) 
E/AndroidRuntime(5946): at android.view.View.performClick(View.java:4084) 
E/AndroidRuntime(5946): at android.view.View$PerformClick.run(View.java:16966) 
E/AndroidRuntime(5946): at android.os.Handler.handleCallback(Handler.java:615) 
E/AndroidRuntime(5946): at android.os.Handler.dispatchMessage(Handler.java:92) 
E/AndroidRuntime(5946): at android.os.Looper.loop(Looper.java:137) 
E/AndroidRuntime(5946): at android.app.ActivityThread.main(ActivityThread.java:4745) 
E/AndroidRuntime(5946): at java.lang.reflect.Method.invokeNative(Native Method) 
E/AndroidRuntime(5946): at java.lang.reflect.Method.invoke(Method.java:511) 
E/AndroidRuntime(5946): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 
E/AndroidRuntime(5946): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 
E/AndroidRuntime(5946): at dalvik.system.NativeStart.main(Native Method) 
W/ActivityManager( 282): Force finishing activity com.androidhive.twitterconnect/.MainActivity 
D/mobiled--->listener( 76): [Client side (recv_cnt: 3671)]: Data is coming, go to check fd_set. 
D/mobiled--->listener( 76): [Client side (recv_cnt: 3671)]: Find a socket with data, unlock and receive. 
D/mobiled--->netlink_listener( 76): Going to decode uevent. 

Answer 1

avete per controllare questo metodo onCreate():

if (android.os.Build.VERSION.SDK_INT > "YOur minimum SDK Version here") { 
     StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder() 
       .permitAll().build(); 
     StrictMode.setThreadPolicy(policy); 
    } 

E aggiungere il permesso di manifestare ..

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

Answer 2

Questa eccezione viene generata quando un'applicazione tenta di eseguire un'operazione di networking sul suo thread principale. Eseguire il codice in AsyncTask:

class RetreiveFeedTask extends AsyncTask<String, Void, RSSFeed> { 

    private Exception exception; 

    protected RSSFeed doInBackground(String... urls) { 
     try { 
      URL url= new URL(urls[0]); 
      SAXParserFactory factory =SAXParserFactory.newInstance(); 
      SAXParser parser=factory.newSAXParser(); 
      XMLReader xmlreader=parser.getXMLReader(); 
      RssHandler theRSSHandler=new RssHandler(); 
      xmlreader.setContentHandler(theRSSHandler); 
      InputSource is=new InputSource(url.openStream()); 
      xmlreader.parse(is); 
      return theRSSHandler.getFeed(); 
     } catch (Exception e) { 
      this.exception = e; 
      return null; 
     } 
    } 

    protected void onPostExecute(RSSFeed feed) { 
     // TODO: check this.exception 
     // TODO: do something with the feed 
    } 
} 

come eseguire l'operazione:

new RetreiveFeedTask().execute(urlToRssFeed); 

Non dimenticare di aggiungere questo al file di AndroidManifest.xml:

<uses-permission android:name="android.permission.INTERNET"/> 

Answer 3

si sta effettuando la collegamento sulla filettatura principale. Tutto il codice nel metodo TwitterLogin() deve essere scritto in una discussione o avviare un'attività Async.

Answer 4

basta aggiungere il seguente codice nella OnCreate off attività:

if (android.os.Build.VERSION.SDK_INT > 8) { 
     StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
     StrictMode.setThreadPolicy(policy); 
    }