presentPopoverFromRect is displaying a popover sideways on rotation - objective-c

-I have a UIView.
-This UIView has a UIButton that when clicked makes a UIAlertView appear.
-Within this UIAlertView I have another UIButton that when clicked calls buttonClicked:
-Within this buttonClicked: method, I call presentPopoverFromRect with a custom view inside. (hourKeyboard is the custom view)
-(void)buttonClicked:(id)sender
{
if(self.hourKeyboard==nil)
{
self.hourKeyboard = [[HourKeyboardViewController alloc] init];
self.hourKeyboardPopover = [[UIPopoverController alloc] initWithContentViewController:self.hourKeyboard];
}
[self.hourKeyboardPopover presentPopoverFromRect:[sender bounds] inView:sender permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
}
In normal portrait mode, this works great. The popover spawns just to the right of the button, with the arrow correctly pointing left to the button.
There's 2 problems that arrises:
1) While this popover is visible, when you rotate the screen the popover rotates slightly incorrectly (it doesn't reposition it's own x and y position)
2) If the popover is not being shown. If you rotate the screen, then call "buttonClicked", the popover will appear, however, its being shown sideways above the button with the arrow pointing "down" towards the button (technically left in relation to the sideways popover view). If you dismiss it, rotate the screen, then call "buttonClicked", the popover now appears upside down with the button pointing "right" to the button (again, technically left in relation to the sideways popover view)! Repeat to make it sideways again, then right-side up again.
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
My thinking:
1) I believe I can just reposition the x and y, however, I've also read that you should dismiss the popover and present it over again on a rotation. I'll see if I can get the first one working, however I'm more concerned about the second problem.
2) I have no idea how to fix this rotation issue. It seems that when you rotate to landscape without the popover being visible. And then you call presentPopoverFromRect, the popover is created with the iPad thinking it's still in portrait view by mistake. That's the behavior it's giving, however, I'm not sure how to make the iPad not make this mistake.
-=-=-=-=-=-=-=-=-=
Thanks again for any help you can provide!
-=-=-
Slight Update:
1) It was easy to just dismiss the popover from the main view on rotation. And this seems to be the general way everyone deals with this issue.
2) Trying out various things such as changing the frame, using CGAffineTransformMakeRotation, and others...but no luck thus far
-=-=-
Another Update:
2) After a lot of testing, it seems to be a direct issue with UIAlertView. If I place the view within UIAlertView (currently doing), the AlertView doesn't tell the popover that the screen is rotated...thus creating the issue
It looks like the only way to fix this is to drop the UIAlertView completely. Instead of showing the UIAlertView, I'll disable the various background views manually (like Alert View was doing) and then show a custom UIView that looks darn similar to the AlertView. From there, I should be able to show the popover without any issues. I'll let yea know how it turns out.
-=-=-=-=-=-=-=-
Final Solution:
I ended up just creating my own view, and having that view imitate a UIAlertView. Then when I spawned the popover, I placed it in the root view controller. Worked much MUCH better, but required more work since I had to manually create my own View instead of the premade UIAlertView. Either way, apparently UIAlertView fails at telling a UIPopoverover subview what rotation it is in.

dismiss the popover in willRotateToInterfaceOrientation and show it again in didRotateFromInterfaceOrientation.
It works with no problems.
EDIT:
Sorry, I misunderstood your second problem.
If some part of your view hierarchy is displayed with bad orientation, one of your controllers is probably missing shouldAutorotateToInterfaceOrientation method.

Related

ios7 custom VC Transition: Overlap a Modal Form Sheet View

i want to use the new UIVC Custom Transition API in my iPad App Project. And i despair of it -.-. what i want to do, sounds very simple at first. My "FirstViewController" (simply the names) is a normal FullScreenVC. From that VC i open a "SecondViewController"modally with the default Presentation style Form Sheet. Everything allright. The SecondViewController is a normal UiTableViewController. So from inside the SecondViewController I want to open a "ThirdViewController" modally as well with a custom transition. This ThridViewController have to overlap the SecondVC with the Form Sheet Presentation and the content of the second view controller have to be dimmed as well. But i get many problems inside the animateTransition-method in the the Transition Delegate. My best idea by now is, making a UIView Snapshot of the from View. Create a new UIView with black background and alpha 0.5 and put it as a subview inside UIView Snapshot. Then transfer the frame and the center of the fromView to the toView and add the UIViewSnappshot as a subview to the toView and send it to the back. finally adding the toView to the containerView.
But when i do this, I get two s*** problems. The First is, that the Transition don't recognize that i am using a Retina display, because i put the center of the fromView to the the toView. But the toView dont overlap the fromView, better its nit at the same postion. Its almost at the left down of the screen and not in the middle of the screen. The second problem is, that the toView content seems to be transculent. In Storyboard and in code i write "be opaque and white bgcolor". But at runtime the see the controls of the view but the bgcolor is the bgcolor of the dimmed View behind it. Why?
At the moment i think i'm a dump guy :( What in hell im doing wrong?
Thanks
Avarlon

Subview of Scrollview doesn't register touch events

I'm struggling with this problem, and although there are quite some threads on this issue I've not figured it out yet.
I want to load a button into a subview of a scrollview. If I test this subview alone, the button works fine. Also, when I add the button to the scrollview directly, it works fine. But the two combined I don't get any touch event on the button.
My view hierarchy:
UIScrollView
UIView
UIButton (A)
UIButton (B)
So button B works fine, A doesn't.
I've tried messing around with the attributes like Cancellable Content Touches, but so far no luck. I'm loading the subview from the storyboard with:
ViewVC *viewVC = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewVC"];
From the posts I've read, this should just work, so either I'm missing something vital, or I've messed up some attributes along the way. Should I use a delegate to pass the events, or should this be done automatically?
Give your views some colours, and check if one of them is obscuring the other preventing it from being touched. Maybe you UIView is overlapping your UIButton(B), preventing it from being touched.
How are you sure you're adding it?
Make sure you're calling addSubview: on your UIScrollView with your subview as the parameter?

Interact with other views while a popover is active

I have a toolBar and I have setup two UIBarButtonItem on it. Both UIBarButtonItem are containing UIButtons as their customViews.
I activate a popover for their Touch Up Inside event as below,
[popover1 presentPopoverFromBarButtonItem:buttonItem1 permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
I have another UIButton named clearFilters inside the main view. (Also this is the view which is containing the above toolBar.) I have declared a method for clearFilters button's Touch Up Inside event.
My problem is,
I can not interact with the clearFilters button while a popover is active. So, I'm looking for a solution to interact with this clearFilters button, while a popover is active.
I tried by adding passthroughViews property for a popover as below and it do not work as I expect.
popover1.passthroughViews = [NSArray arrayWithObject:clearFiltersButton];
What could be the reason. As the documentation has mentioned I can not see any issue.
I expect if the above things are correct, then the Touch Up Inside event of the the clearFilters button's should be fire up.
So, please show me if there is any issue or a necessary way to work on this thing.
I'm working on XCode4 and iOS 4.3.
Thanks.
The UIPopoverController documentation reveals why the other bar buttons can be tapped while the popover is visible:
“When presenting the popover, this method adds the toolbar that owns the button to the popover’s list of passthrough views.”
Try querying and logging the popover’s passthrough views. Does it already have things in it? Perhaps something like this would work?
myPopover.passthroughViews = [myPopover.passthroughViews arrayByAddingObject:clearFilters];
I haven’t tested this code, but it’s worth a try.

UIButton firing selector inconsistantly

I have a UIButton linked up in IB correctly(I believe). The button fires inconsistently, every time I reload the view to show updated info, the button works sometimes and sometimes does not.It gives no errors. I can't find a pattern to when it works and when it doesn't, the same code is run every time I open the view and it still works when it wants. Besides linking it in IB I have also tried to addTarget in ViewDidLoad and remove the IB connection but it still has the same inconsistency,
[_buttonScreen addTarget:self action:#selector(buttonScreenClicked) forControlEvents:UIControlEventTouchUpInside];
If I add NSLog(#"Clicked"); to buttonScreenClicked I see that the method doesn't always get called, what would cause it to do this, I have made sure that I set:
[_buttonScreen setAlpha:0.1];
[_buttonScreen setHidden:NO];
[_buttonScreen setUserInteractionEnabled:YES];
I have no Image, text, or color in the button, but it still works sometimes.
I'm using AFKPageFlipper on the same view but it still had the same problem before I added AFKPageFlipper, so I don't think its that.
If anyone could point me in any direction to start trouble shooting this problem I would appreciate.
Thanks
I just had the same problem and worked it out. The 5 seconds is the clue.
Somewhere you have a gesture recognizer covering the same space as your button. More specifically you have a gesture recognizer that is eating your Taps but not your LongPresses. If you just tap the button the gesture recognizer runs off with your event; Hold your finger down long enough and the gesture recognizer no longer considers it a tap and the event is passed through to your button.
Instrument your Tap gesture recognizer handlers and the problem should pop out at you.
Make sure you don't have any other UIView descendants overlaying the button (like a transparent UIScrollView) as these will intercept the touch events first.
Also make sure that the containing view (the view with the button in) is correctly sized, by default you can place a view outside the bounds of another view and the clipsToBounds is set to false so you will see it but not be able to interact with it.
Things to try:
Do you have any other actions on the button?
Do you have any other UIViews which could possibly be accepting the key presses (above or below, or un-shown)
Also, please check that you have only one UIViewController instance for this screen. Other issues may arrise because of that.
What happens if you dont set the alpha level?
Do you release the object properly in the dealloc only ?
Hope this helps

UISplitViewController - BarButton Item not shown at start

I'm having trouble showing a UISplitViewController programatically.
I have two views, a UIView with buttons which when are pressed load my own custom RootViewController and DetailViewControllers into SplitViewController and then hides the menuSubview for showing UISplitViewController.
Well, it works well in portrait orientation, but when the view is shown the barButtonItem associated with the popOverViewController is not shown. After if I change orientation to landscape, then back to portrait again, the button appears.
Why does this happen? Is there any way to fix it?
I have a little idea. When splitviewController.view is added to the window, the root and detail view controllers are not set yet so could that be the cause?
Well at last I solved the error.
Instead adding two subviews and show/hide them, I add my splitViewController.view as principal to the window and presented the menuViewController as modal, so this issue was solved.