Application tried to present modally an active controller

Question

I just came across a crash showing a NSInvalidArgumentException with this message on an app which wasn t doing this before      Application tried to present modally an active controller   UITabBarController  0x83d7f00    I have a UITabBarController which I create in the AppDelegate and give it the array of UIViewControllers   One of them I want to present modally when tapped on it  I did that by implementing the delegate method  -  BOOL tabBarController  UITabBarController   tabBarController shouldSelectViewController  UIViewController   viewController   If that view controller is of the class of the one I want to present modally  I return NO and do   tabBarController presentModalViewController viewController animated YES     And now I m getting that error  which seems to mean that you can t present modally a view controller that is active somewhere else  in the tabbar     I should say I m on XCode 4 2 Developer Preview 7  so this is iOS 5  I know about the NDA  but I think I m not giving any forbidden details   I currently don t have an XCode installation to test if this crashes compiling against the iOS4 SDK  but I m almost entirely sure it doesn t   I only wanted to ask if anyone has experienced this issue or has any suggestion

User · Answer

Just remove    tabBarController presentModalViewController viewController animated YES     and keep   self dismissModalViewControllerAnimated YES

User · Answer

Instead of using  self present viewControllerToPresent  UIViewController  animated  Bool  completion      - gt  Void     you can use  self navigationController  pushViewController viewController  UIViewController  animated  Bool

User · Answer

Assume you have three view controllers instantiated like so   UIViewController  vc1     UIViewController alloc  init   UIViewController  vc2     UIViewController alloc  init   UIViewController  vc3     UIViewController alloc  init     You have added them to a tab bar like this   UITabBarController  tabBarController     UITabBarController alloc  init    tabBarController setViewControllers  NSArray arrayWithObjects vc1  vc2  vc3  nil      Now you are trying to do something like this    tabBarController presentModalViewController vc3     This will give you an error because that Tab Bar Controller has a death grip on the view controller that you gave it   You can either not add it to the array of view controllers on the tab bar  or you can not present it modally   Apple expects you to treat their UI elements in a certain way   This is probably buried in the Human Interface Guidelines somewhere as a  don t do this because we aren t expecting you to ever want to do this

User · Answer

In my case i was trying to present the viewController  i have the reference of the viewController in the TabBarViewController  from different view controllers and it was crashing with the above message  In that case to avoid presenting you can use      viewController isBeingPresented    viewController isBeingPresented                Present your ViewController only if its not present to the user currently      Might help someone

User · Answer

I have the same problem  I try to present view controller just after dismissing    self dismissModalViewControllerAnimated YES     When I try to do it without animation it works perfectly so the problem is that controller is still alive  I think that the best solution is to use dismissViewControllerAnimated completion  for iOS5

User · Answer

In my case  I was presenting the rootViewController of an UINavigationController when I was supposed to present the UINavigationController itself

User · Answer

The same problem error happened to me when I tried to present a child view controller instead of its UINavigationViewController parent

User · Answer

I had same problem I solve it  You can try This code      tabBarController setSelectedIndex 1    self dismissModalViewControllerAnimated YES

[objective-c] "Application tried to present modally an active controller"?

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