我正在尝试使用IBAction按钮关闭页面视图控制器,我可以关闭视图(PageContentViewController),新视图(LoginViewController)正在显示,但是页面控件中的“点”仍在此处,我无法与之通信新视图(LoginViewController)。
我究竟做错了什么 ?
这是我的代码:
LoginViewController.h:
#import "PageContentViewController.h"
@interface LoginViewController : UIViewController <UIPageViewControllerDataSource>
@property (strong, nonatomic) UIPageViewController *pageViewController;
@property (strong, nonatomic) NSArray *pageTitles;
@property (strong, nonatomic) NSArray *pageImages;
@end
LoginViewController.m:
- (void)viewDidLoad
{
[super viewDidLoad];
// Create the data model
_pageTitles = @[@"Over 200 Tips and Tricks", @"Discover Hidden Features", @"Bookmark Favorite Tip", @"Free Regular Update"];
_pageImages = @[@"FIRST_img.jpg", @"FIRST_img.jpg", @"FIRST_img.jpg", @"FIRST_img.jpg"];
// Create page view controller
self.pageViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageViewController"];
self.pageViewController.dataSource = self;
PageContentViewController *startingViewController = [self viewControllerAtIndex:0];
NSArray *viewControllers = @[startingViewController];
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
// Change the size of page view controller
self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 30);
[self addChildViewController:_pageViewController];
[self.view addSubview:_pageViewController.view];
[self.pageViewController didMoveToParentViewController:self];
}
- (PageContentViewController *)viewControllerAtIndex:(NSUInteger)index
{
if (([self.pageTitles count] == 0) || (index >= [self.pageTitles count])) {
return nil;
}
// Create a new view controller and pass suitable data.
PageContentViewController *pageContentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PageContentViewController"];
pageContentViewController.imageFile = self.pageImages[index];
pageContentViewController.titleText = self.pageTitles[index];
pageContentViewController.pageIndex = index;
return pageContentViewController;
}
#pragma mark - Page View Controller Data Source
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger index = ((PageContentViewController*) viewController).pageIndex;
if ((index == 0) || (index == NSNotFound)) {
return nil;
}
index--;
return [self viewControllerAtIndex:index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger index = ((PageContentViewController*) viewController).pageIndex;
if (index == NSNotFound) {
return nil;
}
index++;
if (index == [self.pageTitles count]) {
return nil;
}
return [self viewControllerAtIndex:index];
}
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController
{
return [self.pageTitles count];
}
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController
{
return 0;
}
PageContentViewController.h:
@interface PageContentViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIImageView *backgroundImageView;
@property (weak, nonatomic) IBOutlet UILabel *titleLabel;
@property NSUInteger pageIndex;
@property NSString *titleText;
@property NSString *imageFile;
- (IBAction)dismissButton:(id)sender;
@end
PageContentViewController.m:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.backgroundImageView.image = [UIImage imageNamed:self.imageFile];
self.titleLabel.text = self.titleText;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)dismissButton:(id)sender {
[self.view performSelectorOnMainThread:@selector(removeFromSuperview) withObject:nil waitUntilDone:NO];
[self performSelectorOnMainThread:@selector(removeFromParentViewController) withObject:nil waitUntilDone:NO];
}
@end
最佳答案
您删除PageContentViewController,但不删除PageViewController(仍然存在)。
尝试在dismissButton方法中使用[self.view.superview ...
编辑:
好的方法是使用标准代码从父级中删除父级:
[self willMoveToParentViewController:nil];
[self.view removeFromSuperview];
[self removeFromParentViewController];
但是您想像这样做一样,从孩子中移除父母,然后尝试使用如下代码:
[self.parentViewController willMoveToParentViewController:nil];
[self.parentViewController.view removeFromSuperview];
[self.parentViewController removeFromParentViewController];
或[self.parentViewController.parentViewController ...取决于层次结构。
关于ios - 带有Page View Controller的removeFromSuperView,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/26305696/