使用选项UIModalPresentationOverCurrentContext减少以模态方式呈现的uiviewcontroller的帧大小

Question

I am recreating a popup style view controller. In the implementation below I am instantiating a view controller and then presenting it on its parent VC modally using the option UIModalPresentationOverCurrentContext .

I would like to reduce the frame size so as to make the new viewcontroller appear more like a popup but the frame size keeps getting overwritten. I also tried setting the frame size of the viewcontroller in its -viewWillAppear and -viewDidLoad methods but nothing changes. Any thoughts?

UIStoryboard* popStoryboard = [UIStoryboard storyboardWithName:@"XXX" bundle:nil];
UIViewController* popViewController = [storyboard instantiateViewControllerWithIdentifier:@"XXXXXX"];

popViewController.modalPresentationStyle = UIModalPresentationOverCurrentContext;
popViewController.view.frame = CGRectMake(0, 0, 400, 450);

[[self topMostViewController] presentViewController:popViewController animated: YES completion: nil];

Answer 1

您正在使用名为popViewController的指针变量实例化视图控制器，但您更改视图的框架并显示名为viewController的指针变量。