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POCannot show modal ViewController in iOS7
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  1. POCannot show modal ViewController in iOS7
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    copied!<p>I tried to show system defined viewcontrollers (MFMailComposeViewController, TWTweetComposeViewController,etc..) as a modal view.</p> <p>But these viewcontrollers dosn't appear in iOS 7(these run in iOS5,iOS6).</p> <p>Viewcontrollers created by me appear in iOS7(ex.HogeViewController). </p> <p>I don't call <code>presentViewController:animated:completion</code> at <code>viewDidLoad</code> or <code>viewWillAppear</code>.</p> <p>Does anybody have an idea?</p> <p>Console logs:</p> <blockquote> <p>init Error Domain=NSCocoaErrorDomain Code=4097 "The operation couldn’t be completed. (Cocoa error 4097.)"</p> </blockquote> <p>or</p> <blockquote> <p>_serviceViewControllerReady:error: Error Domain=NSCocoaErrorDomain Code=4097 "The operation couldn’t be completed. (Cocoa error 4097.)"</p> </blockquote> <p>or</p> <blockquote> <p>Unbalanced calls to begin/end appearance transitions for .</p> </blockquote> <p>TWTweetComposeViewController(doesn't appear)</p> <pre><code>TWTweetComposeViewController *viewController = [[TWTweetComposeViewController alloc]init]; viewController.completionHandler = ^(TWTweetComposeViewControllerResult result){ NSLog(@"Result : %d",result); }; [self presentViewController:viewController animated:YES completion:NULL]; </code></pre> <p>Log</p> <blockquote> <p>Result : 0</p> </blockquote> <p>MFMailComposeViewController(appears a moment and dismiss soon)</p> <pre><code>- (void)send:(NSString*)email{ if ([MFMailComposeViewController canSendMail]) { MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; NSArray *toRecipients = @[email]; [picker setToRecipients:toRecipients]; [picker setSubject:@"Subject"]; [picker setMessageBody:@"Body" isHTML:NO]; [self.navigationController presentViewController:picker animated:YES completion:NULL]; } } - (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error { [self dismissViewControllerAnimated:YES completion:^{ NSLog(@"error:%@,result:%d",error.description,result); }]; } </code></pre> <p>Log</p> <blockquote> <p>_serviceViewControllerReady:error: Error Domain=NSCocoaErrorDomain Code=4097 "The operation couldn’t be completed. (Cocoa error 4097.)" Unbalanced calls to begin/end appearance transitions for . error:(null),result:0</p> </blockquote>
 

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