I have an iPad app that has an MKMapView embedded in a UINavigationController which is displayed in a UITabBar. I am displaying a popover controller over the map with
UIPopoverController *myPopoverController =
[[[UIPopoverController alloc] initWithContentViewController:myContentView]
autorelease];
[myPopoverController presentPopoverFromRect:myRect
inView:mapView
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
The popover displays fine. However, it does not have the nice animated effect: it just immediately appears onscreen. Similarly, when I dismiss it it just disappears without any animation.
Anybody have any idea how I can get the animation to work? Should I try displaying it from another view? Is there some property on something that I might have neglected to set?
Despite the animated:(BOOL) parameter, it appears popovers never animate when presented. I've tried a dozen first and third party apps.
The dismissal should animate however, provided you pass YES to dismissPopoverAnimated:(BOOL)
Assuming your popover animates outside the map view, I would try placing the map view into a container view whose frame is the same size as the map view's. From there, it's trivial to present the popover in the container view.
According to Apple's documentation, MKMapView isn't supposed to be subclassed, so like UIWebView, it strikes me as one of those views whose guts are better left untouched.
Related
I have a UIViewController that pops up a custom UIView that needs to be able to present another UIViewController (BarcodeScanViewController).
When the user is done with the BarcodeScanViewController, data is passed back to the UIView to update a label.
How can I present the BarcodeScanViewController from the UIView with the a navigation bar so I close it if necessary?
The below code kinda works. It present the BarcodeScanViewController, but it doesn't actually do anything. Its just a black view.
Inside Custom UIView
- (void) startScan {
BarcodeScanViewController * bsvc = [[BarcodeScanViewController alloc] init];
bsvc.delegate = self;
UIViewController *currentTopVC = [self currentTopViewController];
[currentTopVC presentViewController:bsvc animated:YES completion:nil];
}
I also receive an warning
Assigning to
'id < BarcodeScanViewControllerDelegate > ' from incompatible type 'CustomView * const__strong'
when I try to assign the delegate.
I have never called UIViewController from a UIView before. I know that only a VC can call another VC. So I tried to create VC to use a presenter.
What am I doing wrong?
Okay, there were a bunch of smaller things. I forked your repo and fixed it so that you can see how it works. See here.
In short: You did present the scanner VC, but as I said you can't simply put it "over" the presenting view controller (your ViewController class). As soon as any presentation transitions (i.e. animations) are done, the view of that ViewController is removed from the view hierarchy. So what you saw as a black screen was just the window background (which is black). The scanner's view was transparent. Furthermore, the scanner expected you to provide a view to render the camera into (and buttons) via an IBOutlet. Since you didn't instantiate the controller from a storyboard, you didn't set any, i.e. the view used for that was nil and thus the frame the scanner wanted to render the video in had a size of (0, 0).
I fixed that for now, hopefully you can now see how presenting a viewcontroller is supposed to work. To achieve an actual popup (with "underlying views of previous view controllers") is a bit harder on iOS, but possible in several ways. I can elaborate further later if you want.
We have a MainViewController with a tableView, and it presents a new modalViewController.
The MainViewController is restricted to portrait only, and the modalViewController can rotate.
The problem is in iOS8, that when the modalViewController rotates, the callback method of rotation in iOS8 in MainViewcontroller is called - - (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
Thus, the UITableView is getting its data reloaded, which is a behaviour we don't want.
Can we prevent this feature of iOS 8, and not rotate the presenting UIViewController?
So after long days of searching and investigating, I finally came up with a possible solution.
First of all, I can use navigation controller and push the viewController instead of presenting it, but it breaks my code and just isn't so true.
The second thing I can do is not setting constraints. I still can use autolayout, but if I don't set constraints, and let the default constraints to be set, the tableView doesn't get reloaded. of course this is also isn't very smart thing to do, as I have many elements in my viewController.
Finally, I figured out that I can show this "modal" viewController in another UIWindow. I create UIWindow and set the modalViewController as its rootViewController.
I put some example project in git:
https://github.com/OrenRosen/ModalInWindow
Hope it will be helpful.
I did something similar with a navigation controller, that wouldn't rotate unless the top pushed controller does rotate.
In your case check if the main controller is presenting another controller. If it isn't then just reject rotation, otherwise return whatever the presented controller returns for the rotation method.
As for your table view, it shouldn't get reloaded because of rotations.
In iOS 8 the view that rotates when you change the device orientation is the first view added to the UIWindow. So, if you save a reference to it in your presentedController, you can overwrite the shouldAutorotate and supportedInterfaceOrientations values.
Here is a visual representation of the UISplitViewController:
I'm trying to present a UIViewController (myVC) that's a subview of a UIView inside the DetailViewController of a UISplitViewController using this:
[appDelegate.splitViewController presentViewController:myVC animated:NO completion:nil];
It presents, I dismiss it, the app rotates without a hitch, then when I try to reload the detail view by clicking on a cell in the rootViewController (a UINavigationController), all the [orangeUIView removeFromSuperview] messages are mysteriously disabled (there are more orange UIViews hidden here that are inside a mainScrollView). The "INFO LABEL" in the topToolbar is updating, so I know the cell is sending data...
Why would this activity disable removeFromSuperview if presented using splitViewController? I've presented myVC using the detailViewController...
[appDelegate.detailViewController presentViewController:myVC animated:NO completion:nil];
which doesn't disable removeFromSuperview, but causes an assortment of other rotational crashes.
What's going on here?
Since this question was created as a result of a previous question, the answer to this problem was...try something else. I was unable to fix this problem by presenting a view controller, most likely because I'm using a custom UISplitViewController with a hierarchy I'd rather not get into.
Here is the solution I came up with:
Core Plot - Options on making the graph full screen - addSubview after presenting modal problems
actually I'm quite new with Xcode and couldn't find the answer to the following two questions by a google search:
to make it short: I'm working on an iPad app that displays proposals. For this purpose you should choose a proposal from the table in MasterView and then see the details in the DetailsView in landscape mode (but without the MasterView on the Spitscreen).
So when the app starts in landscape mode, I wanna see directly the first proposal full screen on the DetailsView. And when I tap onto the screen the MasterView should popup/unhide with the other proposals in the table. Is this possible?
I wanna display the PDFs in a WebView like in iBooks. That means that the navigation bar is hidden and only when I tap onto the screen the navigation bar should appear at the top of the screen.
I'm kind of sure this questions have been solved somewhere but I couldn't find anything by search so I hope you can help me anyway :-)
Thanks in Advance!
Q1: Use can use one of many methods to present a view (look up under Apple's doc on UIViewController under "Presenting Another View Controller's Content" heading). Two that I have used are: – presentModalViewController:animated: and – presentViewController:animated:completion: (the latter is the latest addition in iOS 5.0)
So let's say you have a detail controller called MyDetailViewController, in your Master View Controller's implementation file (the .m file), under viewDidLoad method, you would do some thing like this to present it as a full screen view.
MyDetailViewController *myDetailViewController = [[MyDetailViewController alloc] initWithNibName:#"MyDetailViewController" bundle:nil];
[myDetailViewController.view setFrame:CGRectMake(0, 0, 1024, 768)]; //might not need this
[self presentViewController:newDetailViewController animated:YES completion:^{
NSLog(#"complete"); //optional
} ];
To dismiss or hide this MyDetailViewController with a tap or touch, you can use UITapGestureRecognizer or touchesEnded method and using one of the dismiss methods (refer back to Apple's UIViewController again for this).
Q2: I personally have not used UIWebView to display PDF and not sure if iBooks is using UIWebview to do it. But to display a varieties of popular documents formats, you can use either the QLPreviewController class or UIDocumentInteractionController. You can hide the toolbar while the document is displayed.
Good luck.
I'm using UIModalTransitionStylePartialCurl to show a modal view in iPad.
modalViewController.modalTransitionStyle = UIModalTransitionStylePartialCurl;
[[self parentViewController] presentModalViewController:modalViewController animated:YES];
self is the right side view controller of my SplitViewController.
When I do this, the page is curled all the way to the top even though the size of the view of modalViewController is small. I only need it to curl a little so it would reveal ONLY the area taken by modalViewController. What I'm trying to do is something exactly like the iPad maps application settings.
I tried using all the modalPresentationStyle options for the modal view and I also tried setting the modalPresentationStyle.view.frame to a small CGRect but still couldn't get it to work.
Can anybody help on this...thanks in advance..
Just leave a clean space (No Controls or Images) in the top of your PresentedViewController, the Framework make the rest.
I have yet to find a more optimal solution, but I've been able to get good results by making the modal (revealed) view the same size as the parent (curling) view. iOS looks at the subviews to determine where to stop the curling and shows "just enough" of the subview to keep the subview pieces on-screen.