ios - using Twitter SDK to send tweet failed, but I'dont know why -

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i'm using twitter sdk loggin , tweet. authenticate it's ok, when use twtrcomposer simple text, sdk callback return 'twtrcomposerresultdone', simulator/device show 'the tweet "text" cannot sent because connection twitter failed. debugger show 'plugin com.apple.share.twitter.post invalidated' aparently correct.

is there bug or forgot thing.

my code:

twtrcomposer *composer = [[twtrcomposer alloc] init];

[composer settext:@"some text"];

[composer showwithcompletion:^(twtrcomposerresult result) { if (result == twtrcomposerresultcancelled) { nslog(@"tweet composition cancelled"); } else { nslog(@"sending tweet!"); } }];

tweet using sdk
1. crearte app on twitter.developer
2. add twitter frameworks twittercore.framework, twitterkit.framework, fabric.framework, twitterkitresources.bundle
3. write below code in tweet button

  [[twitter sharedinstance] startwithconsumerkey:@"yourconsumerkey" consumersecret:@"yourconsumersecret"];   [fabric with:@[[twitter sharedinstance]]];    [[twitter sharedinstance] loginwithcompletion:^(twtrsession *session, nserror *error)    {     if (session)      {         nslog(@"logged in user id %@", session.userid);          twtrcomposer *composer = [[twtrcomposer alloc] init];         [composer settext:@"enter tweet message"];         //[composer setimage:[uiimage imagenamed:@"fabric"]];         [composer showfromviewcontroller:self completion:^(twtrcomposerresult result) {             if (result == twtrcomposerresultcancelled)              {                 nslog(@"tweet composition cancelled");             }             else              {                 nslog(@"sending tweet!");                 uialertview *warningalert = [[uialertview alloc] initwithtitle:@"" message:@"sent tweet!" delegate:nil cancelbuttontitle:@"ok" otherbuttontitles:nil];                 [warningalert show];             }         }];      }      else      {         // log error     }  }];

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