title: how to oauth twitter with Twitter4J api
body: <p>I want to authenticate twitter with Twitter4j api but it gives following error:</p>
  
  <pre><code>   09-13 12:12:09.223: WARN/System.err(677): oauth.signpost.exception.OAuthNotAuthorizedException: Authorization failed (server replied with a 401). This can happen if the consumer key was not correct or the signatures did not match.
  09-13 12:12:09.233: WARN/System.err(677):     at oauth.signpost.basic.DefaultOAuthProvider.retrieveToken(DefaultOAuthProvider.java:74)
  09-13 12:12:09.233: WARN/System.err(677):     at oauth.signpost.AbstractOAuthProvider.retrieveRequestToken(AbstractOAuthProvider.java:66)
  09-13 12:12:09.233: WARN/System.err(677):     at com.facebook.android.OAuthTwitter.onCreate(OAuthTwitter.java:45)
  09-13 12:12:09.233: WARN/System.err(677):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
  09-13 12:12:09.233: WARN/System.err(677):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
  09-13 12:12:09.233: WARN/System.err(677):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2417)
  09-13 12:12:09.233: WARN/System.err(677):     at android.app.ActivityThread.access$2100(ActivityThread.java:116)
  09-13 12:12:09.243: WARN/System.err(677):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
  09-13 12:12:09.243: WARN/System.err(677):     at android.os.Handler.dispatchMessage(Handler.java:99)
  09-13 12:12:09.243: WARN/System.err(677):     at android.os.Looper.loop(Looper.java:123)
  09-13 12:12:09.243: WARN/System.err(677):     at android.app.ActivityThread.main(ActivityThread.java:4203)
  09-13 12:12:09.243: WARN/System.err(677):     at java.lang.reflect.Method.invokeNative(Native Method)
  09-13 12:12:09.243: WARN/System.err(677):     at java.lang.reflect.Method.invoke(Method.java:521)
  09-13 12:12:09.243: WARN/System.err(677):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
  09-13 12:12:09.243: WARN/System.err(677):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549)
  09-13 12:12:09.243: WARN/System.err(677):     at dalvik.system.NativeStart.main(Native   method)
  </code></pre>
  
  <p>and i use the below code;</p>
  
  <pre><code>public class OAuthTwitter extends Activity {
  public final static String CALLBACK_URL = "callback://twitter"; // ----
                                                                  // (4)
  
  private CommonsHttpOAuthConsumer commonHttpOAuthConsumer;
  private OAuthProvider authProvider;
  
  private Twitter twitter;
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  
      commonHttpOAuthConsumer = new CommonsHttpOAuthConsumer(CONSUMER_KEY,
              CONSUMER_SECRET); // ----- (5)
      authProvider = new DefaultOAuthProvider(
              "https://api.twitter.com/oauth/request_token",
              "https://api.twitter.com/oauth/access_token",
              "https://api.twitter.com/oauth/authorize");
      try {
          String oAuthURL = authProvider.retrieveRequestToken(
                  commonHttpOAuthConsumer, CALLBACK_URL);
  
          this.startActivity(new Intent(Intent.ACTION_VIEW, Uri
                  .parse(oAuthURL)));
  
      } catch (OAuthMessageSignerException e) {
          Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
          e.printStackTrace();
      } catch (OAuthNotAuthorizedException e) {
          Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
          e.printStackTrace();
      } catch (OAuthExpectationFailedException e) {
          Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
          e.printStackTrace();
      } catch (OAuthCommunicationException e) {
          Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
          e.printStackTrace();
      }
  }
  
  protected void onNewIntent(Intent intent) { // ---- (6)
      super.onNewIntent(intent);
  
      Uri uri = intent.getData(); // ---- (7)
      if (uri != null &amp;&amp; uri.toString().startsWith(CALLBACK_URL)) {
          String verifier = uri
                  .getQueryParameter(oauth.signpost.OAuth.OAUTH_VERIFIER);
          try {
              authProvider.retrieveAccessToken(commonHttpOAuthConsumer,
                      verifier); // ---- (8)
  
              AccessToken accessToken = new AccessToken(
                      commonHttpOAuthConsumer.getToken(),
                      commonHttpOAuthConsumer.getTokenSecret()); // ---- (9)
  
              twitter = new TwitterFactory().getInstance(); // ---- (10)
              twitter.setOAuthConsumer(CONSUMER_KEY, CONSUMER_SECRET);
  
              twitter.setOAuthAccessToken(accessToken); // ---- (11)
  
              // Tweet message to be updated.
              String tweet = "Hiee there, This is send from my application - OAuth, Twitter";
              twitter.updateStatus(tweet); // ---- (12)
          } catch (Exception e) {
              Toast.makeText(getBaseContext(), e.getMessage(),
                      Toast.LENGTH_LONG);
          }
      }
  }
  }
  </code></pre>
  
  <p>using the jars: signpost-commonshttp4-1.2.1.1.jar,signpost-core-1.2.jar,twitter4j-core-android-2.2.4.jar
  plz anyone tell me where i am wrong.</p>