java - Twitter: 「このページにはサーバー リダイレクトが多すぎます」というエラーが表示される

Question

AndroidアプリでTwitterを使用してデータを共有しようとしているので、リダイレクトURL、「Twitterアプリ登録ページ」で指定されたアプリケーションなどの基本情報はすべて正常に機能しますが、ログインページでユーザー名とパスワードを指定した後次のページにリダイレクトされず、代わりに「このページにはサーバー リダイレクトが多すぎます」というエラー メッセージが表示されます。

私のリダイレクト URL は次のようになります"https://www.example.com/"。

助言がありますか？

public class constants {
public static final String CONSUMER_KEY = "key";
public static final String CONSUMER_SECRET= "secret";

public static final String REQUEST_URL = "http://api.twitter.com/oauth/request_token";
public static final String ACCESS_URL = "http://api.twitter.com/oauth/access_token";
public static final String AUTHORIZE_URL = "http://api.twitter.com/oauth/authorize";


public static final String OAUTH_CALLBACK_URL = "x-latify-oauth-twitter";
private static final String CALLBACK_SCHEME = null;
public static final Object OAUTH_CALLBACK_SCHEME = CALLBACK_SCHEME + "://callback";

}

主な活動

import java.util.Date;

import oauth.signpost.OAuth;
import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
import oauth.signpost.commonshttp.CommonsHttpOAuthProvider;
 import android.os.Bundle;
import android.os.Handler;
 import android.preference.PreferenceManager;
   import android.provider.SyncStateContract.Constants;
 import android.app.Activity;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
 import android.util.Log;
 import android.view.Menu;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
  import android.widget.Toast;

  public class MainActivity extends Activity {


private SharedPreferences prefs;
  private final Handler mTwitterHandler = new Handler();
  private TextView loginStatus;

    final Runnable mUpdateTwitterNotification = new Runnable() {
     public void run() {
        Toast.makeText(getBaseContext(), "Tweet sent !", Toast.LENGTH_LONG).show();
      }
  };

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    this.prefs = PreferenceManager.getDefaultSharedPreferences(this);

    loginStatus = (TextView)findViewById(R.id.ls);
    Button tweet = (Button) findViewById(R.id.tweet);
    Button clearCredentials = (Button) findViewById(R.id.cc);

      tweet.setOnClickListener(new View.OnClickListener() {

     * to the twitter login page. Once the user authenticated, he'll authorize the     Android     application to send
    * tweets on the users behalf.
    */
        public void onClick(View v) {
         if (TwitterUtils.isAuthenticated(prefs)) {
         sendTweet();
         } else {
    Intent i = new Intent(getApplicationContext(), PrepareRequestTokenActivity.class);
    i.putExtra("tweet_msg",getTweetMsg());
    startActivity(i);
         }
        }
    });

    clearCredentials.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
         clearCredentials();
         updateLoginStatus();
        }
    });
   }

  @Override
  protected void onResume() {
 super.onResume();
 updateLoginStatus();
  }

 public void updateLoginStatus() {
  loginStatus.setText("Logged into Twitter : " + TwitterUtils.isAuthenticated(prefs));
  }


 private String getTweetMsg() {
 return "Tweeting from Android App at " + new Date().toLocaleString();
  } 

 public void sendTweet() {
 Thread t = new Thread() {
  public void run() {

  try {
  TwitterUtils.sendTweet(prefs,getTweetMsg());
  mTwitterHandler.post(mUpdateTwitterNotification);
  } catch (Exception ex) {
   ex.printStackTrace();
  }
  }

 };
 t.start();
 }

 private void clearCredentials() {
 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
 final Editor edit = prefs.edit();
 edit.remove(OAuth.OAUTH_TOKEN);
 edit.remove(OAuth.OAUTH_TOKEN_SECRET);
 edit.commit();
 }
 }



import oauth.signpost.OAuthConsumer;
import oauth.signpost.OAuthProvider;
 import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
 import android.util.Log;


public class OAuthRequestTokenTask extends AsyncTask<Void, Void, Void> {

    final String TAG = getClass().getName();
    private Context context;
    private OAuthProvider provider;
    private OAuthConsumer consumer;

    /**
    *
    * We pass the OAuth consumer and provider.
    *
    * @param context
    * Required to be able to start the intent to launch the browser.
    * @param provider
    * The OAuthProvider object
    * @param consumer
    * The OAuthConsumer object
    */
    public OAuthRequestTokenTask(Context context,OAuthConsumer consumer,OAuthProvider provider) {
    this.context = context;
    this.consumer = consumer;
    this.provider = provider;
    }

    /**
    *
    * Retrieve the OAuth Request Token and present a browser to the user to authorize the token.
    *
    */
    @Override
    protected Void doInBackground(Void... params) {

    try {
    Log.i(TAG, "Retrieving request token from Google servers");
    final String url = provider.retrieveRequestToken(consumer, constants.OAUTH_CALLBACK_URL);
    Log.i(TAG, "Popping a browser with the authorize URL : " + url);
    Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)).setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_FROM_BACKGROUND);
    context.startActivity(intent);
    } catch (Exception e) {
    Log.e(TAG, "Error during OAUth retrieve request token", e);
    }

    return null;
    }

    }




import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.SyncStateContract.Constants;
import android.util.Log;
import oauth.signpost.OAuth;
import oauth.signpost.OAuthConsumer;
import oauth.signpost.OAuthProvider;
import oauth.signpost.commonshttp.CommonsHttpOAuthConsumer;
import oauth.signpost.commonshttp.CommonsHttpOAuthProvider;

 public class PrepareRequestTokenActivity extends Activity {
final String TAG = getClass().getName();

private OAuthConsumer consumer;
private OAuthProvider provider;

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
 try {
 this.consumer = new CommonsHttpOAuthConsumer(constants.CONSUMER_KEY,    constants.CONSUMER_SECRET);
 this.provider = new          CommonsHttpOAuthProvider(constants.REQUEST_URL,constants.ACCESS_URL,constants.AUTHORIZE_URL      );
 } catch (Exception e) {
 Log.e(TAG, "Error creating consumer / provider",e);
 }

    Log.i(TAG, "Starting task to retrieve request token.");
  new OAuthRequestTokenTask(this,consumer,provider).execute();
  }

  /**
  * Called when the OAuthRequestTokenTask finishes (user has authorized the request    token).
 * The callback URL will be intercepted here.
  */
 @Override
     public void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
   final Uri uri = intent.getData();
    if (uri != null && uri.getScheme().equals(constants.OAUTH_CALLBACK_SCHEME)) {
   Log.i(TAG, "Callback received : " + uri);
    Log.i(TAG, "Retrieving Access Token");
    new RetrieveAccessTokenTask(this,consumer,provider,prefs).execute(uri);
     finish();  
     }
      }

          public class RetrieveAccessTokenTask extends AsyncTask<Uri, Void, Void> {

       private Context  context;
      private OAuthProvider provider;
      private OAuthConsumer consumer;
       private SharedPreferences prefs;

     public RetrieveAccessTokenTask(Context context, OAuthConsumer                   consumer,OAuthProvider provider, SharedPreferences prefs) {
   this.context = context;
     this.consumer = consumer;
    this.provider = provider;
     this.prefs=prefs;
        }


      /**
       * Retrieve the oauth_verifier, and store the oauth and oauth_token_secret
     * for future API calls.
       */
      protected Void doInBackground(Uri...params) {
        final Uri uri = params[0];
      final String oauth_verifier = uri.getQueryParameter(OAuth.OAUTH_VERIFIER);

             try {
       provider.retrieveAccessToken(consumer, oauth_verifier);

      final Editor edit = prefs.edit();
         edit.putString(OAuth.OAUTH_TOKEN, consumer.getToken());
       edit.putString(OAuth.OAUTH_TOKEN_SECRET, consumer.getTokenSecret());
     edit.commit();

     String token = prefs.getString(OAuth.OAUTH_TOKEN, "");
     String secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");

     consumer.setTokenWithSecret(token, secret);
     context.startActivity(new Intent(context,MainActivity.class));

  executeAfterAccessTokenRetrieval();

   Log.i(TAG, "OAuth - Access Token Retrieved");

    } catch (Exception e) {
    Log.e(TAG, "OAuth - Access Token Retrieval Error", e);
     }

   return null;
      }


     private void executeAfterAccessTokenRetrieval() {
     String msg = getIntent().getExtras().getString("tweet_msg");
     try {
      TwitterUtils.sendTweet(prefs, msg);
        } catch (Exception e) {
     Log.e(TAG, "OAuth - Error sending to Twitter", e);
     }
     }
    }

twitterUtils.java

import oauth.signpost.OAuth;
import twitter4j.Twitter;
 import twitter4j.TwitterException;
 import twitter4j.TwitterFactory;
 import twitter4j.http.AccessToken;
 import android.content.SharedPreferences;
 import android.provider.SyncStateContract.Constants;

  public class TwitterUtils {
public static boolean isAuthenticated(SharedPreferences prefs) {

 String token = prefs.getString(OAuth.OAUTH_TOKEN, "");
 String secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");

 AccessToken a = new AccessToken(token,secret);
 Twitter twitter = new TwitterFactory().getInstance();
 twitter.setOAuthConsumer(constants.CONSUMER_KEY, constants.CONSUMER_SECRET);
 twitter.setOAuthAccessToken(a);

 try {
 twitter.getAccountSettings();
 return true;
 } catch (TwitterException e) {
 return false;
 }
 }

 public static void sendTweet(SharedPreferences prefs,String msg) throws Exception {
 String token = prefs.getString(OAuth.OAUTH_TOKEN, "");
 String secret = prefs.getString(OAuth.OAUTH_TOKEN_SECRET, "");

 AccessToken a = new AccessToken(token,secret);
 Twitter twitter = new TwitterFactory().getInstance();
 twitter.setOAuthConsumer(constants.CONSUMER_KEY, constants.CONSUMER_SECRET);
  twitter.setOAuthAccessToken(a);
    twitter.updateStatus(msg);
 }  
 }

Answer 1

コールバック URL を変更し、URL の代わりにコールバック URL の下に書きます。

public static final String CALLBACK_URL = "x-oauthflow-twitter://callback";

詳細については、以下のリンクを参照してください。

Android での Twitter の統合