如何使用網頁控制

Question

我要滾動或移動到另一視圖中的視圖控制器之間滾動。如何使用頁面控制來做到這一點？

Answer 1

系統提供UIPageViewController，你可以用它和UIPageControl獲得你在想什麼

Answer 2

可以使用的PageControl的財產currentPage

@property(nonatomic) NSInteger currentPage;   // default is 0. value pinned to 0..numberOfPages-1 

它可以作爲

[pageControl setCurrentPage:<logic to get your VC>]; 

Answer 3

頁面是一個數組，您將存儲故事板ID和NSInteger currentPageIndex，設置currentPa geIndex = 0

- (void)viewDidLoad 
{ 
self.pages = [[NSMutableArray alloc]init]; 

// instantiate the view controlles from the storyboard 
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; 
UIViewController* ViewController1 = [storyboard instantiateViewControllerWithIdentifier:@"VC1"]; 

UIViewController* ViewController2 = [storyboard instantiateViewControllerWithIdentifier:@"VC2"]; 

// load the view controllers in our pages array 
[self.pages addObjectsFromArray:@[ViewController1, ViewController2]]; 
// your general suff 
} 


- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController { 
NSInteger index = [_pages indexOfObject:viewController]; 

if ((index == NSNotFound) || (index == 0)) { 
    return nil; 
} 

index--; 
return [_pages objectAtIndex:index]; 
} 


- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController { 
NSInteger index = [_pages indexOfObject:viewController]; 

if (index == NSNotFound) { 
    return nil; 
} 
index++; 

if (index == [_pages count]) { 
    return nil; 
} 
return [_pages objectAtIndex:index]; 
} 


-(void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed { 
if (completed) { 
    self.currentPageIndex = [_pages indexOfObject:[pageViewController.viewControllers lastObject]]; 
} 
}