Everythings seems ok but function retrieveRequestToken() throws 'OAuthCommunicationException' exception

问题

I am trying to build an android app so that it tweets in twitter.
I am trying to get uri using the function retrieveRequestToken(consumer,CALLBACK_URI) but it throws 'OAuthCommunicationException' exception. I gave the internet uses permission for the application( i have checked it ).I have registerd the app in twitter giving read,write and direct messages.

Logcat
01-07 192624.589 Din(581) check1
01-07 192624.691 Dcommunication(581) 4
01-07 192624.691 WSystem.err(581)   oauth.signpost.exception.OAuthCommunicationException Communication with the service provider failed null
01-07 192624.691 WSystem.err(581)   at oauth.signpost.AbstractOAuthProvider.retrieveToken(AbstractOAuthProvider.java214)
01-07 192624.702 WSystem.err(581)   at oauth.signpost.AbstractOAuthProvider.retrieveRequestToken(AbstractOAuthProvider.java69)

Here is the code snippet

update = (Button) findViewById(R.id.update);
        status = (TextView) findViewById(R.id.status);
private  static  final  String CALLBACK_URI = OauthTwittertwitt;
private static final String REQUEST_TOKEN_URL = httpsapi.twitter.comoauthrequest_token;
private static final String ACCESS_TOKEN_URL = httpsapi.twitter.comoauthaccess_token;
private static final String AUTHORIZE_URL = httpsapi.twitter.comoauthauthorize;
private static CommonsHttpOAuthConsumer consumer;
private static DefaultOAuthProvider provider;
consumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
provider = new DefaultOAuthProvider(REQUEST_TOKEN_URL,
                ACCESS_TOKEN_URL, AUTHORIZE_URL);
        update.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                 showMyDialog();

                try {
                    Log.d(in,check1);
                    String authUrl = provider.retrieveRequestToken(consumer,CALLBACK_URI);
                    Log.d(uri, authUrl);
                    startActivity(new Intent(Intent.ACTION_VIEW,Uri.parse(authUrl)));
                } catch (OAuthMessageSignerException e) {
                     TODO Auto-generated catch block
                    Log.d(signerg,1);
                    e.printStackTrace();
                } catch (OAuthNotAuthorizedException e) {
                     TODO Auto-generated catch block
                    Log.d(Notauths,2);
                    e.printStackTrace();
                } catch (OAuthExpectationFailedException e) {
                     TODO Auto-generated catch block
                    Log.d(authExceg,3);
                    e.printStackTrace();
                } catch (OAuthCommunicationException e) {
                     TODO Auto-generated catch block
                    Log.d(communication,4);
                    e.printStackTrace();
                }

            }

回答1:

This is caused by a network on main thread exception. Try running the oauth code on a thread:

          new Thread(new Runnable() {
                public void run() {
                    String authUrl = provider.retrieveRequestToken(consumer,CALLBACK_URI);
                }
              }).start();

来源：https://stackoverflow.com/questions/8779186/everythings-seems-ok-but-function-retrieverequesttoken-throws-oauthcommunicat