UISplitViewController: How to present popover? - objective-c

Question

I've a UISplitViewController which is a UISplitViewControllerDelegate with the following delegate method:
splitViewController:willHideViewController:withBarButtonItem:forPopoverController:
When the iPad is started in Portrait, I would like the Popover from the SplitView to be visible. How can I do that?
I've tried the following code:
- (void)splitViewController:(UISplitViewController *)svc
willHideViewController:(UIViewController *)aViewController
withBarButtonItem:(UIBarButtonItem *)barButtonItem
forPopoverController:(UIPopoverController *)pc
{
//setting the barButtonItem in the toolbar in the detail view.
[pc presentPopoverFromBarButtonItem:barButtonItem permittedArrowDirections:UIPopoverArrowDirectionAny animated:NO];
}
But the above code gives me the following error:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIPopoverController presentPopoverFromRect:inView:permittedArrowDirections:animated:]: Popovers cannot be presented from a view which does not have a window.'

Answer 1

there only one problem, wrong place to call presentPopover method, splitViewController:*WillHide*ViewController....... so, barButtonItem exist but not present on screen. i used next code and it worked for me.
For handle all cases u need to use 2 methods.
- (void)viewDidAppear:(BOOL)animated
{
if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait || [[UIDevice currentDevice] orientation] == UIDeviceOrientationPortraitUpsideDown) {
if (self.view.window != nil) {
[_masterPopoverController presentPopoverFromRect:CGRectMake(0, 0, 1, 1) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:NO];
}
}
[super viewDidAppear:animated];
}
and
-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
if (fromInterfaceOrientation == UIDeviceOrientationLandscapeLeft || fromInterfaceOrientation == UIDeviceOrientationLandscapeRight) {
if (self.view.window != nil) {
[_masterPopoverController presentPopoverFromRect:CGRectMake(0, 0, 1, 1) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:NO];
}
}
}