uipopover

问题 I have a ViewController which consist of UILabel and UIButton . OnClick UIButton a popOver present which show tableView . each cell of tableView represent different font option. I want to change the font of UILabel based on user selected font from tableViewCell . how i can achieve this as my UILabel and tableView are in different viewController class. Please help me. func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { var row = indexPath.row // How to

问题 I was wondering how I could use 1 button on my ToolBar to open and dismiss my UIPopOver. If I keep tapping the button right now, another PopOver overlaps the previous one. I want ONE button to be able to dismiss and open my PopOver. I tap once, it opens. I tap the button again, it dismisses. Please tell me how. Thanks 回答1: In your button tap action event: if (myPopover.popoverVisible) //self.myPopover if using property { [myPopover dismissPopoverAnimated:YES]; return; } //continue code here

问题 I am trying to insert a uipopover with uidatepicker in it with two buttons - Cancel and Done. I was able to design the layout using storyboard with the help of UIDatePicker in UIPopover and How can I show a UIDatePicker inside a Popover on iPad using StoryBoard? But, I am not able to get the date from uidatepicker to uiviewcontroller when Done button is pressed. I am new to ios programming and i find delegate methods very confusing. Could somebody shed some light? Help much appreciated. Thank

问题 I'm using UIPopoverPresentationController for popovers in an iOS app. When a navigation controller in a popover pushes a new view controller, the popover resizes to that view controller's preferredContentSize . But when the navigation controller pops a view controller off the stack, the popover does not resize to the previous size. How can I make it do that? Possible duplicate of this question, but for the modern UIPopoverPresentationController . Update: See here for example code illustrating

问题 I set a UITableViewController to be displayed in a popover on iPad : When I click on a row, I display an alert to warn the user of a potential destructive action. I used the new UIAlertController, and here is what happens: The popover becomes very small (the size of the alertController view in fact). If I press Cancel, I can see the result : Here is my code: override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) { var previouslySelectedCell:

问题 I can't keep popover the same position on the screen after rotation. Is there any good way to do that, because just setting some frame to popover works terrible after rotating. popover.frame = CGRectMake(someFrame); After rotation popover looks fine only if it is in the center of the screen. 回答1: Apple has a Q&A on exactly this issue. You can find the details here: Technical Q&A QA1694 Handling Popover Controllers During Orientation Changes Basically, the technique explains that in your view

问题 Does anyone know if UIPopoverPresentationController can be used to present popovers on iPhones? Wondering if Apple added this feature on iOS 8 in their attempt to create a more unified presentation controllers for iPad and iPhone. Not sure if its OK to ask/answer questions from Beta. I will remove it in that case. 回答1: You can override the default adaptive behaviour ( UIModalPresentationFullScreen in compact horizontal environment, i.e. iPhone) using the

问题 Does anyone know if UIPopoverPresentationController can be used to present popovers on iPhones? Wondering if Apple added this feature on iOS 8 in their attempt to create a more unified presentation controllers for iPad and iPhone. Not sure if its OK to ask/answer questions from Beta. I will remove it in that case. 回答1: You can override the default adaptive behaviour ( UIModalPresentationFullScreen in compact horizontal environment, i.e. iPhone) using the

问题 So, I think that when I click outside of a popover, the method popoverControllerDidDismissPopover should be called. I know this isn't called when dismissPopoverAnimated is called. I have a simple project that I have setup that shows popoverControllerDidDismissPopover just isn't called: #import "ViewController.h" #import "PopoverViewController.h" @interface ViewController () { PopoverViewController *controller; UIPopoverController *popoverController; } @end @implementation ViewController

问题 Created a SingleViewApplication in that I have placed a button. Now clicking on button I need to display a tableView as popover. The TableViewController is created in xib. The issue is tableViewController.popoverPresentationController always comes as nil see below code let filterVC = TableViewController(nibName: "TableViewController", bundle: nil) var filterDistanceViewController = UINavigationController(rootViewController: filterVC) filterDistanceViewController.preferredContentSize = CGSize