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iphoneuiwindowuipopover

can we show UIPopOver over UIWindow

I'm working on application where I want show popover in 

- (void)applicationWillEnterForeground:(UIApplication *)application

app delegate function but application throwing exception 

"'NSInvalidArgumentException', reason: 'Popovers cannot be presented from a view which does not have a window.'".

I'm calling popOver like 

[popOver presentPopoverFromRect:self.rootViewController.view.frame inView:self.rootViewController.view  permittedArrowDirections:0 animated:YES];

If I change code like

[popOver presentPopoverFromRect:self.rootViewController.view.frame inView:self.window  permittedArrowDirections:0 animated:YES];

the code work fine. So is it right to show popOver in appdelegates window?

Solution

  • The view isn't presented yet. That is why it doesn't have a window. Try adding that code to the root view controller's viewDidAppear method.