所以我到处找,似乎找不到我要找的东西。基本上,我的应用程序中有 3 个不同的 View Controller 。 (MainViewController, ChildViewController, TwitterViewController) 起初我练习只使用 ChildViewController 并更新一个标签来告诉你你在哪个页面。但是,我想将 TwitterViewController 添加为“第 2 页”并将 ChildViewController 保留为“第 1 页”。
目前,我将 MainViewController 设置为 Delegate 和 DataSource,并将代码放回仅使用一个“ChildViewController”作为不同页面。请让我知道如果这不使。如果需要,我会尝试重申。下面是我的代码。
MainViewController.m
#import "MainViewController.h"
#import "ChildViewController.h"
#import "TwitterViewController.h"
@interface MainViewController ()
@end
@implementation MainViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.pageController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
self.pageController.dataSource = self;
[[self.pageController view] setFrame:[[self view] bounds]];
ChildViewController *initialViewController = [self viewControllerAtIndex:0];
NSArray *viewControllers = [NSArray arrayWithObject:initialViewController];
[self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
[self addChildViewController:self.pageController];
[[self view] addSubview:[self.pageController view]];
[self.pageController didMoveToParentViewController:self];
UIPageControl *pageControl = [UIPageControl appearance];
pageControl.pageIndicatorTintColor = [UIColor blackColor];
pageControl.currentPageIndicatorTintColor = [UIColor redColor];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
NSUInteger index = [(ChildViewController *)viewController index];
if (index == 0) {
return nil;
}
index--;
return [self viewControllerAtIndex:index];
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
NSUInteger index = [(ChildViewController *)viewController index];
index++;
if (index == 2) {
return nil;
}
return [self viewControllerAtIndex:index];
}
- (ChildViewController *)viewControllerAtIndex:(NSUInteger)index {
ChildViewController *first = [[ChildViewController alloc] initWithNibName:@"ChildViewController" bundle:nil];
first.index = index;
return first;
}
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
return 2;
}
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController {
return 0;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
ChildViewController.m
#import "ChildViewController.h"
#import <QuartzCore/QuartzCore.h>
@interface ChildViewController ()
@end
@implementation ChildViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.screenNumber.text = [NSString stringWithFormat:@"This is Page #%d", self.index];
self.screenNumber.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:1];
self.screenNumber.layer.cornerRadius =10;
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
TwitterViewController 是默认的,还没有被编写。目前只是用一个空白的 ViewController 尝试它。
任何帮助都会很棒!!谢谢你们!
最佳答案
您将需要每个 View Controller 的索引。因此,如果您创建一个 UIViewController 类作为基类,该类将具有一个属性“index”来存储索引,那就太好了。然后子类化这个基类来创建 ChildViewController 和 TwitterViewContoller。将方法 (ChildViewController *)viewControllerAtIndex:(NSUInteger)index
更改为(BaseViewController *)viewControllerAtIndex:(NSUInteger)index
。
在方法内部,根据索引返回适当的 View Controller 。
关于ios - 在 UIPageViewController 中使用 2 个不同的 View Controller 作为页面,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/20601707/