UITableViewCell鏈接到PageViewController中的特定頁面

我對iOS編程相當陌生，並且遇到了我自己無法解決的問題。UITableViewCell鏈接到PageViewController中的特定頁面

我的應用程序的主要部分是可搜索的動物列表（AnimalTableViewController）（此功能有效）。點擊某個單元格後，您應該能夠查看動物的圖像。所有動物圖像都在PagerViewController（CustomPagerViewController）中編譯。

image of my storyboards can be found here http://i50.tinypic.com/ve14r4.jpg

我需要做的是一個動態的表格單元連接到特定視圖/故事板。我已經能夠將單元連接到圖像之前 - 圖像數組顯示在單個視圖控制器中。這次我選擇通過PagerViewController來完成它，因爲我需要滑動功能（與滑動有關的方法可以在PagerViewController.m中找到，它們都按預期工作）。

請你能幫助我，我還沒有找到任何關於如何在UITableView和PagerViewController之間傳遞數據的教程或建議。

AnimalTableViewController.m

@implementation AnimalTableViewController 

@synthesize allTableData; 
@synthesize filteredTableData; 
@synthesize searchBar; 
@synthesize isFiltered; 
@synthesize tableView; 

- (id)initWithStyle:(UITableViewStyle)style 
{ 
    self = [super init]; 
    if (self) { 
     // Custom initialization 
    } 
    return self; 
} 

- (void)didReceiveMemoryWarning 
{ 
    // Releases the view if it doesn't have a superview. 
    [super didReceiveMemoryWarning]; 
} 

#pragma mark - View lifecycle 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    tableView.delegate = (id)self; 
    tableView.dataSource = (id)self; 

    searchBar.delegate = (id)self; 

    allTableData = [[NSMutableArray alloc] initWithObjects: 
        [[Animal alloc] initWithName:@"Aardvark" andDescription:@"Aardvark"], 
        [[Animal alloc] initWithName:@"Alligator" andDescription:@"Alligator"], 
        [[Animal alloc] initWithName:@"Alpaca" andDescription:@"Alpaca"], 
        [[Animal alloc] initWithName:@"Ant" andDescription:@"Ant"], 
        [[Animal alloc] initWithName:@"Anteater" andDescription:@"Anteater"], 
        [[Animal alloc] initWithName:@"Armadillo" andDescription:@"Armadillo"], 
        [[Animal alloc] initWithName:@"Baboon" andDescription:@"Baboon"], 
        [[Animal alloc] initWithName:@"Badger" andDescription:@"Badger"], 
        [[Animal alloc] initWithName:@"Bat" andDescription:@"Bat"], 
        [[Animal alloc] initWithName:@"Bear" andDescription:@"Bear"], 
        [[Animal alloc] initWithName:@"Beaver" andDescription:@"Beaver"], 
        [[Animal alloc] initWithName:@"Bee" andDescription:@"Bee"], 
        [[Animal alloc] initWithName:@"Bison" andDescription:@"Bison"], 
        nil ]; 
} 

- (void)viewDidUnload 
{ 
    [self setSearchBar:nil]; 
    [super viewDidUnload]; 
} 

- (void)viewWillAppear:(BOOL)animated 
{ 
    [super viewWillAppear:animated]; 
} 

- (void)viewDidAppear:(BOOL)animated 
{ 
    [super viewDidAppear:animated]; 
} 

- (void)viewWillDisappear:(BOOL)animated 
{ 
    [super viewWillDisappear:animated]; 
} 

- (void)viewDidDisappear:(BOOL)animated 
{ 
    [super viewDidDisappear:animated]; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    return (interfaceOrientation == UIInterfaceOrientationPortrait); 
} 

#pragma mark - Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
    return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    int rowCount; 
    if(self.isFiltered) 
     rowCount = filteredTableData.count; 
    else 
     rowCount = allTableData.count; 

    return rowCount; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"Cell"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; 

    Animal* animal; 
    if(isFiltered) 
     animal = [filteredTableData objectAtIndex:indexPath.row]; 
    else 
     animal = [allTableData objectAtIndex:indexPath.row]; 

    cell.textLabel.text = animal.name; 
// cell.detailTextLabel.text = animal.description; 

    return cell; 
} 

#pragma mark - Table view delegate 

-(void)searchBar:(UISearchBar*)searchBar textDidChange:(NSString*)text 
{ 
    if(text.length == 0) 
    { 
     isFiltered = FALSE; 
    } 
    else 
    { 
     isFiltered = true; 
     filteredTableData = [[NSMutableArray alloc] init]; 

     for (Animal* animal in allTableData) 
     { 
      NSRange nameRange = [animal.name rangeOfString:text options:NSCaseInsensitiveSearch]; 
      NSRange descriptionRange = [animal.description rangeOfString:text options:NSCaseInsensitiveSearch]; 
      if(nameRange.location != NSNotFound || descriptionRange.location != NSNotFound) 
      { 
       [filteredTableData addObject:animal]; 
      } 
     } 
    } 

    [self.tableView reloadData]; 
} 

@end

CustomPagerViewController.m

@interface CustomPagerViewController() 

@end 

@implementation CustomPagerViewController 

- (void)viewDidLoad 
{ 
    // Do any additional setup after loading the view, typically from a nib. 
    [super viewDidLoad]; 

    [self addChildViewController:[self.storyboard instantiateViewControllerWithIdentifier:@"Aardvark"]]; 
    [self addChildViewController:[self.storyboard instantiateViewControllerWithIdentifier:@"Alligator"]]; 
    [self addChildViewController:[self.storyboard instantiateViewControllerWithIdentifier:@"Alpaca"]]; 
} 

@end

PagerViewController.m

@interface PagerViewController() 
@property (assign) BOOL pageControlUsed; 
@property (assign) NSUInteger page; 
@property (assign) BOOL rotating; 
- (void)loadScrollViewWithPage:(int)page; 
@end 

@implementation PagerViewController 

@synthesize scrollView; 
@synthesize pageControl; 
@synthesize pageControlUsed = _pageControlUsed; 
@synthesize page = _page; 
@synthesize rotating = _rotating; 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    [self.scrollView setPagingEnabled:YES]; 
    [self.scrollView setScrollEnabled:YES]; 
    [self.scrollView setShowsHorizontalScrollIndicator:NO]; 
    [self.scrollView setShowsVerticalScrollIndicator:NO]; 
    [self.scrollView setDelegate:self]; 
} 

- (BOOL)automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers { 
    return NO; 
} 

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    return YES; 
} 

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { 
    UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    [viewController willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration]; 
    _rotating = YES; 
} 

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { 

    UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    [viewController willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration]; 

    self.scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * [self.childViewControllers count], scrollView.frame.size.height); 
    NSUInteger page = 0; 
    for (viewController in self.childViewControllers) { 
     CGRect frame = self.scrollView.frame; 
     frame.origin.x = frame.size.width * page; 
     frame.origin.y = 0; 
     viewController.view.frame = frame; 
     page++; 
    } 

    CGRect frame = self.scrollView.frame; 
    frame.origin.x = frame.size.width * _page; 
    frame.origin.y = 0; 
    [self.scrollView scrollRectToVisible:frame animated:NO]; 

} 

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation { 
    _rotating = NO; 
    UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    [viewController didRotateFromInterfaceOrientation:fromInterfaceOrientation]; 
} 

- (void)viewWillAppear:(BOOL)animated { 
    [super viewWillAppear:animated]; 

    for (NSUInteger i =0; i < [self.childViewControllers count]; i++) { 
     [self loadScrollViewWithPage:i]; 
    } 

    self.pageControl.currentPage = 0; 
    _page = 0; 
    [self.pageControl setNumberOfPages:[self.childViewControllers count]]; 

    UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    if (viewController.view.superview != nil) { 
     [viewController viewWillAppear:animated]; 
    } 

    self.scrollView.contentSize = CGSizeMake(scrollView.frame.size.width * [self.childViewControllers count], scrollView.frame.size.height); 
} 

- (void)viewDidAppear:(BOOL)animated { 
    [super viewDidAppear:animated]; 

    if ([self.childViewControllers count]) { 
     UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
     if (viewController.view.superview != nil) { 
      [viewController viewDidAppear:animated]; 
     } 
    } 
} 

- (void)viewWillDisappear:(BOOL)animated { 
    if ([self.childViewControllers count]) { 
     UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
     if (viewController.view.superview != nil) { 
      [viewController viewWillDisappear:animated]; 
     } 
    } 
    [super viewWillDisappear:animated]; 
} 

- (void)viewDidDisappear:(BOOL)animated { 
    UIViewController *viewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    if (viewController.view.superview != nil) { 
     [viewController viewDidDisappear:animated]; 
    } 
    [super viewDidDisappear:animated]; 
} 

- (void)loadScrollViewWithPage:(int)page { 
    if (page < 0) 
     return; 
    if (page >= [self.childViewControllers count]) 
     return; 

    // replace the placeholder if necessary 
    UIViewController *controller = [self.childViewControllers objectAtIndex:page]; 
    if (controller == nil) { 
     return; 
    } 

    // add the controller's view to the scroll view 
    if (controller.view.superview == nil) { 
     CGRect frame = self.scrollView.frame; 
     frame.origin.x = frame.size.width * page; 
     frame.origin.y = 0; 
     controller.view.frame = frame; 
     [self.scrollView addSubview:controller.view]; 
    } 
} 

- (void)previousPage { 
    if (_page - 1 > 0) { 

     // update the scroll view to the appropriate page 
     CGRect frame = self.scrollView.frame; 
     frame.origin.x = frame.size.width * (_page - 1); 
     frame.origin.y = 0; 

     UIViewController *oldViewController = [self.childViewControllers objectAtIndex:_page]; 
     UIViewController *newViewController = [self.childViewControllers objectAtIndex:_page - 1]; 
     [oldViewController viewWillDisappear:YES]; 
     [newViewController viewWillAppear:YES]; 

     [self.scrollView scrollRectToVisible:frame animated:YES]; 

     self.pageControl.currentPage = _page - 1; 
     // Set the boolean used when scrolls originate from the UIPageControl. See scrollViewDidScroll: above. 
     _pageControlUsed = YES; 
    } 
} 

- (void)nextPage { 
    if (_page + 1 > self.pageControl.numberOfPages) { 

     // update the scroll view to the appropriate page 
     CGRect frame = self.scrollView.frame; 
     frame.origin.x = frame.size.width * (_page + 1); 
     frame.origin.y = 0; 

     UIViewController *oldViewController = [self.childViewControllers objectAtIndex:_page]; 
     UIViewController *newViewController = [self.childViewControllers objectAtIndex:_page + 1]; 
     [oldViewController viewWillDisappear:YES]; 
     [newViewController viewWillAppear:YES]; 

     [self.scrollView scrollRectToVisible:frame animated:YES]; 

     self.pageControl.currentPage = _page + 1; 
     // Set the boolean used when scrolls originate from the UIPageControl. See scrollViewDidScroll: above. 
     _pageControlUsed = YES; 
    } 
} 

- (IBAction)changePage:(id)sender { 
    int page = ((UIPageControl *)sender).currentPage; 

    // update the scroll view to the appropriate page 
    CGRect frame = self.scrollView.frame; 
    frame.origin.x = frame.size.width * page; 
    frame.origin.y = 0; 

    UIViewController *oldViewController = [self.childViewControllers objectAtIndex:_page]; 
    UIViewController *newViewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    [oldViewController viewWillDisappear:YES]; 
    [newViewController viewWillAppear:YES]; 

    [self.scrollView scrollRectToVisible:frame animated:YES]; 

    // Set the boolean used when scrolls originate from the UIPageControl. See scrollViewDidScroll: above. 
    _pageControlUsed = YES; 
} 

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView { 
    UIViewController *oldViewController = [self.childViewControllers objectAtIndex:_page]; 
    UIViewController *newViewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
    [oldViewController viewDidDisappear:YES]; 
    [newViewController viewDidAppear:YES]; 

    _page = self.pageControl.currentPage; 
} 

#pragma mark - 
#pragma mark UIScrollViewDelegate methods 

- (void)scrollViewDidScroll:(UIScrollView *)sender { 
    // We don't want a "feedback loop" between the UIPageControl and the scroll delegate in 
    // which a scroll event generated from the user hitting the page control triggers updates from 
    // the delegate method. We use a boolean to disable the delegate logic when the page control is used. 
    if (_pageControlUsed || _rotating) { 
     // do nothing - the scroll was initiated from the page control, not the user dragging 
     return; 
    } 

    // Switch the indicator when more than 50% of the previous/next page is visible 
    CGFloat pageWidth = self.scrollView.frame.size.width; 
    int page = floor((self.scrollView.contentOffset.x - pageWidth/2)/pageWidth) + 1; 
    if (self.pageControl.currentPage != page) { 
     UIViewController *oldViewController = [self.childViewControllers objectAtIndex:self.pageControl.currentPage]; 
     UIViewController *newViewController = [self.childViewControllers objectAtIndex:page]; 
     [oldViewController viewWillDisappear:YES]; 
     [newViewController viewWillAppear:YES]; 
     self.pageControl.currentPage = page; 
     [oldViewController viewDidDisappear:YES]; 
     [newViewController viewDidAppear:YES]; 
     _page = page; 
    } 
} 

// At the begin of scroll dragging, reset the boolean used when scrolls originate from the UIPageControl 
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { 
    _pageControlUsed = NO; 
} 

// At the end of scroll animation, reset the boolean used when scrolls originate from the UIPageControl 
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { 
    _pageControlUsed = NO; 
} 

@end

來源

2012-12-05 iOSnewbie

創建一個賽格瑞一個標識符（在界面生成器2次之間的線）

enter image description here

然後在您PagerViewController下面的代碼添加到AnimalTableViewController

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    Animal* animal; 
    if(isFiltered) 
     animal = [filteredTableData objectAtIndex:indexPath.row]; 
    else 
     animal = [allTableData objectAtIndex:indexPath.row]; 

    [self performSegueWithIdentifier:@"DetailSegue" sender:animal]; 
} 

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
    if ([[segue identifier] isEqualToString:@"DetailSegue"]) { 

     PagerViewController *detailVC = [segue destinationViewController]; 
     detailVC.currentAnimal = sender; 
    } 
}

然後。 h創建

@property (strong, nonatomic) Animal *currentAnimal;

現在您可以通過self.currentAnimal訪問PagerViewController中的動物了

來源

2012-12-05 13:59:11

謝謝羅蘭！你是明星！然而，當我點擊任何細胞時，它只會讓我去第一隻動物;任何想法如何跳轉到特定的動物？單元格標籤與故事板名稱相同，我正在考慮通過'如果條件語句'或'開關'來做到這一點，但這可能會相當漫長......您認爲最好的解決方案是什麼？ – iOSnewbie

你需要爲每隻動物使用一個新的Viewcontroller嗎？也許你應該製作1個viewController並添加所有的邏輯。如果Segue標識符相同，則可以使用動物的名稱。像：[self addChildViewController：[self.storyboard instantiateViewControllerWithIdentifier：self.animal.name]]; –

您需要設置從您點擊的UITableViewCell到新viewController的繼續。使用prepareForSegue方法並將UIImage（或圖像數組）傳遞給新的viewController。一旦數組成爲新viewController的一部分，您可以隨意操作數組。

設置從UITableViewCell到viewController的新segue。
設置segue標識符。
根據所選的UITableViewCell的indexPath發送viewController圖像（或您的情況下的圖像數組）。

來源

2012-12-05 13:39:15

UITableViewCell鏈接到PageViewController中的特定頁面

回答

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