ios - UIPageViewController 具有以编程方式生成的 View 数组
<p><p>所以我需要创建一个 UIPageViewController 来显示一些 View(1-25)。 <br/> 基本上我有一个测验应用程序，对于每个错误的问题，我将问题编号 (1-25) 保存在 NSMutableArray 中。测验完成后，我想向用户显示哪个测验答案是错误的。我有设置错误答案 View 的方法(与我在测验中设置 View 的方法相同)。
这一直给我 'Thread1:' 错误。</p>
<pre><code>PVCPagesViewController.h
#import <UIKit/UIKit.h>
#import "PVCContentViewController.h"
@interface PVCPagesViewController : UIViewController <UIPageViewControllerDataSource, UIPageViewControllerDelegate>
@property (weak, nonatomic) IBOutlet UIPageControl *pageControl;
@end
</code></pre>
<p>.</p>
<pre><code>PVCPagesViewController.m
#import "PVCPagesViewController.h"
@interface PVCPagesViewController () {
NSArray *pages;
}
@property (retain, nonatomic) NSArray *pages;
@property (strong, nonatomic) UIPageViewController *pageController;
@end
@implementation PVCPagesViewController
- (void)viewDidLoad
{
;
// Do any additional setup after loading the view.
//I think my problem is around here?
PVCContentViewController *page1 = [ init];
;
PVCContentViewController *page2 = [ init];
;
PVCContentViewController *page3 = [ init];
;
PVCContentViewController *page4 = [ init];
;
// load the view controllers in our pages array
self.pages = [ initWithObjects:page1, page2, page3, page4, nil];
self.pageController = [ initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
;
;
[ setFrame:[ bounds]];
NSArray *viewControllers = ];
;
;
;
;
;
[ addSubview:];
;
];
}
- (void)didReceiveMemoryWarning
{
;
// Dispose of any resources that can be recreated.
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController {
NSUInteger currentIndex = ; // get the index of the current view controller on display
; // move the pageControl indicator to the next page
// check if we are at the end and decide if we need to present the next viewcontroller
if ( currentIndex < -1) {
return ; // return the next view controller
} else {
return nil; // do nothing
}
}
- (UIViewController *) pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController {
NSUInteger currentIndex = ; // get the index of the current view controller on display
; // move the pageControl indicator to the next page
// check if we are at the beginning and decide if we need to present the previous viewcontroller
if ( currentIndex > 0) {
return ; // return the previous viewcontroller
} else {
return nil; // do nothing
}
}
- (void)changePage:(id)sender {
UIViewController *visibleViewController = self.pageController.viewControllers;
NSUInteger currentIndex = ;
NSArray *viewControllers = ];
if (self.pageControl.currentPage > currentIndex) {
;
} else {
;
}
}
@end
</code></pre>
<p>.</p>
<pre><code>PVCContentViewController.h
#import <UIKit/UIKit.h>
#import "PVCPagesViewController.h"
@interface PVCContentViewController : UIPageViewController
@property (weak, nonatomic) IBOutlet UILabel *label1;
@property (weak, nonatomic) IBOutlet UILabel *label2;
@property (weak, nonatomic) IBOutlet UILabel *label3;
-(void)example1;
-(void)example2;
-(void)example3;
@end
</code></pre>
<p>最后:</p>
<pre><code>PVCContentViewController.m
#import "PVCContentViewController.h"
@interface PVCContentViewController ()
@end
@implementation PVCContentViewController
@synthesize label3,label2,label1;
- (void)viewDidLoad {
;
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning {
;
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using .
// Pass the selected object to the new view controller.
}
*/
-(void)example1{
label1.text = @"View 1";
label2.text = @"View 1";
label3.text = @"view 1";
}
-(void)example2{
label1.text = @"View 2";
label2.text = @"View 2";
label3.text = @"view 2";
}
-(void)example3{
label1.text = @"View 3";
label2.text = @"View 3";
label3.text = @"view 3";
}
@end
</code></pre>
<p>我从这里借用了启动源代码:
<a href="https://github.com/hackin247/UIPageViewController" rel="noreferrer noopener nofollow">https://github.com/hackin247/UIPageViewController</a> </p>
<p>我的源代码:
<a href="https://github.com/4FunAndProfit/UIPageViewControllerHelp" rel="noreferrer noopener nofollow">https://github.com/4FunAndProfit/UIPageViewControllerHelp</a> </p>
<p>如果您需要更多信息，请告诉我!</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>你试过直接用 <code>self.pages</code> 数组设置 <code>pageController</code> 吗？</p>
<p><code>;</code></p>
<p>我没有看到创建另一个数组(<code>viewControllers</code>)的意义。尝试获取下一页时，这可能会导致问题，因为 <code>pageController</code> 只有一个 <code>viewController</code> (<code></code> ) 但“数据源”说它应该有更多基于 <code>self.pages.count</code>。</p></p>
<p style="font-size: 20px;">关于ios - UIPageViewController 具有以编程方式生成的 View 数组，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/25172721/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/25172721/
</a>
</p>
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