#import "TestViewController.h"
#import "OneViewController.h"
在TextViewController写入点击事件：
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
[self click];
}
- (void)click
{
OneViewController * vc = [OneViewController new];
[self presentViewController:vc animated:YES completion:nil];
NSLog(@"%@",NSStringFromClass([self.presentationController class]));
NSLog(@"%@",NSStringFromClass([self.presentedViewController class]));
NSLog(@"%@",NSStringFromClass([self.presentingViewController class]));
NSLog(@"%@",NSStringFromClass([vc.presentationController class]));
NSLog(@"%@",NSStringFromClass([vc.presentedViewController class]));
NSLog(@"%@",NSStringFromClass([vc.presentingViewController class]));
}
打印结果:
2015-10-07 11:49:38.933 ceshi[2610:61561] _UIFullscreenPresentationController
2015-10-07 11:49:38.933 ceshi[2610:61561] OneViewController
2015-10-07 11:49:38.933 ceshi[2610:61561] (null)
2015-10-07 11:49:38.934 ceshi[2610:61561] _UIFullscreenPresentationController
2015-10-07 11:49:38.934 ceshi[2610:61561] (null)
2015-10-07 11:49:38.934 ceshi[2610:61561] TestViewController
在OneViewController的ViewDidAppear写入：
- (void)viewDidAppear:(BOOL)animated
{
NSLog(@"%@",NSStringFromClass([self.presentationController class]));
NSLog(@"%@",NSStringFromClass([self.presentedViewController class]));
NSLog(@"%@",NSStringFromClass([self.presentingViewController class]));
}
打印结果:
2015-10-07 11:49:39.437 ceshi[2610:61561] _UIFullscreenPresentationController
2015-10-07 11:49:39.437 ceshi[2610:61561] (null)
2015-10-07 11:49:39.437 ceshi[2610:61561] TestViewController
总结：
presented 和 presenting 都是相对于当前UIViewController自己的。
我的理解，presented就是当前UIViewController有权利弹出的VC对象，presenting就是把当前UIViewController给弹出的对象。
我再理解了一下，presented就是当前UIViewController的儿子
presenting就是当前UIViewController的老子
