UIViewController属性presentedViewController,presentingViewController和parentViewController区别 1.presentedViewController:The view controller that is presented by this view controlller(read-only),...
UIViewController属性presentedViewController,presentingViewController和parentViewController区别 1.presentedViewController:The view controller that is presented by this view controlller(read-only),...
一、主要用途 弹出模态ViewController是IOS变成中很有用的一个技术,UIKit提供的一些专门用于模态显示的ViewController,如UIImagePickerController等。弹出模态ViewController主要使用于一下这几种情形: ...
本文将为详细的介绍了视图控制器UIController及其子类间的两种关系——父子关系和显示与被显示关系,能够帮助初学者更好地理解tabBarController、navigationController、splitViewController、parentViewController...
问题: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller .' 解决: 判断controller是不是有...
先判断presentedViewController为空时,再presentModalViewController if (self.presentedViewController == nil) ... [self presentModalViewController:myController animated:YES];...
一、主要用途 弹出模态ViewController是IOS变成中很有用的一个技术,UIKit提供的一些专门用于模态显示的ViewController,如UIImagePickerController等。弹出模态ViewController主要使用于一下这几种情形: ...
// The view controller that was presented by this view controller or its nearest ancestor. 此视图控制器的视图控制器或其最近的祖先。 ...@property(nullable, ...UIViewController *presentedViewControl