iphoneiosuiviewcontroller

"Pushing the same view controller instance more than once is not supported" exception

I am using the following code to retrieve some messages and putting them into my inbox. 

MyInboxVC *inboxVC=[MyInboxVC get ];
//upload all the pending messages
UINavigationController *devNavController=[[MyappMgr get]getDeveloperNavigationController ];

[devNavController pushViewController:inboxVC animated:YES];
[devNavController setNavigationBarHidden:NO];

I get the exception 

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing the same view controller instance more than once is not supported (<MyInboxVC: 0x1452a0>)'

What does it mean? What am I doing wrong?

Solution

  • I believe when you do some actions really fast this can happens too. I build something in like this:

    if(![self.navigationController.topViewController isKindOfClass:[YOURCLASS class]]) {