UIPopoverPresentationController总是显示全屏模式弹出

Question

我试图将视图控制器显示为按钮下面或窗口中央的UIPopoverPresentationController。但它总是显示为全窗口模式弹出。

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    MySecondViewController *controller = [storyboard instantiateViewControllerWithIdentifier:@"Pop"];

    // present the controller
    // on iPad, this will be a Popover
    // on iPhone, this will be an action sheet
    controller.modalPresentationStyle = UINavigationControllerOperationPop;
    [self presentViewController:controller animated:YES completion:nil];
    controller.preferredContentSize = CGSizeMake(280, 230);
    // configure the Popover presentation controller
    UIPopoverPresentationController *popController = [controller popoverPresentationController];
    popController.permittedArrowDirections = UIPopoverArrowDirectionUp;
    popController.delegate = self;

    // in case we don't have a bar button as reference
    popController.sourceView = self.showPop;
    popController.sourceRect = CGRectMake(384, -120, 280, 230);


-(UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller {
    return UIModalPresentationNone;
}

Answer 1

尝试一下它正在工作的代码

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
SecondViewController *controller = [storyboard instantiateViewControllerWithIdentifier:@"pop"];

controller.modalPresentationStyle = UIModalPresentationPopover;
controller.preferredContentSize = CGSizeMake(280, 230);
// configure the Popover presentation controller

controller.popoverPresentationController.delegate = self;
controller.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;


// in case we don't have a bar button as reference
controller.popoverPresentationController.sourceView = self.view;
controller.popoverPresentationController.sourceRect = CGRectMake(384, -120, 280, 230);
//    controller.presentationController.delegate = self;
[self presentViewController:controller animated:YES completion:nil];

Answer 2

我为同样的问题发表了另一个问题，我已经解决了我的问题。以下是问题的链接：UIPopoverPresentationController is showing full screen modal on iPhone

在ViewController.h中，首先创建一个UIPopoverPresenatationController属性。

@property(nonatomic,retain)UIPopoverPresentationController *dateTimePopover8;

然后显示PopOverPresentationcontroller

    UINavigationController *destNav = [[UINavigationController alloc] initWithRootViewController:dateVC];
/*Here dateVC is controller you want to show in popover*/
                dateVC.preferredContentSize = CGSizeMake(280,200);
                destNav.modalPresentationStyle = UIModalPresentationPopover;
                _dateTimePopover8 = destNav.popoverPresentationController;
                _dateTimePopover8.delegate = self;
                _dateTimePopover8.sourceView = self.view;
                _dateTimePopover8.sourceRect = [sender frame];
                destNav.modalPresentationStyle = UIModalPresentationPopover;
                destNav.navigationBarHidden = YES;
                [self presentViewController:destNav animated:YES completion:nil];

您一定已经注意到，我们提供的不是popOver.So，而是视图控制器，我们必须以新的方式隐藏这一点，当我们单击屏幕时，also.It会自动隐藏。

-(void)hideIOS8PopOver
{
    [self dismissViewControllerAnimated:YES completion:nil];
}

我们必须在实现文件中实现UIPopoverPresenatationController的委托，在实现文件中实现下面的委托方法。

- (UIModalPresentationStyle) adaptivePresentationStyleForPresentationController: (UIPresentationController * ) controller {
    return UIModalPresentationNone;
}

Answer 3

在童话板，这是非常容易的。只需控制将触发操作(例如UIBarButton或普通按钮)的控件拖动到情节提要视图控制器(如果导航控制器的根视图，则拖动到导航控制器)。选择segue并将属性检查器中的类型更改为“presentation”，Present: Form sheet (如果您希望它在中间显示)，选择您想要的转换类型(默认值很酷)。

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