UIScrollView不会通过自动resizeresize

我在iOS 5+上支持UIScrollView的所有内容都表明我应该可以使用Xcode的Size Inspector中的自动调整function来自动调整视图大小。

使用Storyboard，我有一个TabBarViewController，其中一个选项卡有一个UIScrollView和一个页面控件。

在幕后我已经以编程方式设置了UIView中页面的处理（我不知道是否有必要发布代码，但为了清晰起见，我还是会这样做）。

从iPhone 3.5英寸切换到iPhone 4英寸时，自动resize无法正常工作。 我希望在使用3.5英寸屏幕时可以看到UIScrollView和Page控件。

我应该注意到iPad版本（见下面的代码）在我的子视图中没有正确捕捉。 （这可能是一个完全不同的问题）。

4英寸屏幕

3.5英寸屏幕

以防万一，这是我的.m文件：

#import "TutorialViewController.h" @interface TutorialViewController () @property (nonatomic, strong) NSArray *pageImages; @property (nonatomic, strong) NSMutableArray *pageViews; - (void)loadVisiblePages; - (void)loadPage:(NSInteger)page; - (void)purgePage:(NSInteger)page; #ifdef UI_USER_INTERFACE_IDIOM #define IS_IPAD() (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) #else #define IS_IPAD() (false) #endif @end @implementation TutorialViewController @synthesize scrollView = _scrollView; @synthesize pageControl = _pageControl; @synthesize pageImages = _pageImages; @synthesize pageViews = _pageViews; - (void)loadPage:(NSInteger)page { if (page = self.pageImages.count) { // If it's outside the range of what you have to display, then do nothing return; } // 1 UIView *pageView = [self.pageViews objectAtIndex:page]; if ((NSNull*)pageView == [NSNull null]) { // 2 CGRect frame = self.scrollView.bounds; frame.origin.x = frame.size.width * page; frame.origin.y = 0.0f; // 3 UIImageView *newPageView = [[UIImageView alloc] initWithImage:[self.pageImages objectAtIndex:page]]; newPageView.contentMode = UIViewContentModeScaleAspectFill; newPageView.frame = frame; [self.scrollView addSubview:newPageView]; // 4 [self.pageViews replaceObjectAtIndex:page withObject:newPageView]; } } - (void)purgePage:(NSInteger)page { if (page = self.pageImages.count) { // If it's outside the range of what you have to display, then do nothing return; } // Remove a page from the scroll view and reset the container array UIView *pageView = [self.pageViews objectAtIndex:page]; if ((NSNull*)pageView != [NSNull null]) { [pageView removeFromSuperview]; [self.pageViews replaceObjectAtIndex:page withObject:[NSNull null]]; } } - (void)loadVisiblePages { // First, determine which page is currently visible CGFloat pageWidth = self.scrollView.frame.size.width; NSInteger page = (NSInteger)floor((self.scrollView.contentOffset.x * 2.0f + pageWidth) / (pageWidth * 2.0f)); // Update the page control self.pageControl.currentPage = page; // Work out which pages you want to load NSInteger firstPage = page - 1; NSInteger lastPage = page + 1; // Purge anything before the first page for (NSInteger i=0; i<firstPage; i++) { [self purgePage:i]; } // Load pages in our range for (NSInteger i=firstPage; i<=lastPage; i++) { [self loadPage:i]; } // Purge anything after the last page for (NSInteger i=lastPage+1; i<self.pageImages.count; i++) { [self purgePage:i]; } } - (void)scrollViewDidScroll:(UIScrollView *)scrollView { // Load the pages that are now on screen [self loadVisiblePages]; // NSLog(@"Scroll View Did Scroll"); } - (void)viewDidLoad { [super viewDidLoad]; // Step 1 if (IS_IPAD()) { self.pageImages = [NSArray arrayWithObjects: [UIImage imageNamed:@"1536x2048 tutorial_1.png"], [UIImage imageNamed:@"1536x2048 tutorial_2.png"], [UIImage imageNamed:@"1536x2048 tutorial_3.png"], [UIImage imageNamed:@"1536x2048 tutorial_4.png"], nil]; } else { self.pageImages = [NSArray arrayWithObjects: [UIImage imageNamed:@"640x960 tutorial_1.png"], [UIImage imageNamed:@"640x960 tutorial_2.png"], [UIImage imageNamed:@"640x960 tutorial_3.png"], [UIImage imageNamed:@"640x960 tutorial_4.png"], nil]; } NSInteger pageCount = self.pageImages.count; // Step 2 self.pageControl.currentPage = 0; self.pageControl.numberOfPages = pageCount; // Step 3 self.pageViews = [[NSMutableArray alloc] init]; for (NSInteger i = 0; i < pageCount; ++i) { [self.pageViews addObject:[NSNull null]]; } } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; // Step 4 // 3.5in height = 388 // 4in height = 476 CGSize pagesScrollViewSize = self.scrollView.frame.size; self.scrollView.contentSize = CGSizeMake(pagesScrollViewSize.width * self.pageImages.count, pagesScrollViewSize.height); // Step 5 [self loadVisiblePages]; } @end 

Answer 1

像这样用

要么

像这样你的问题将解决

或在.m文件中写入单行代码

  scrollview.frame = CGRectMake(x, y, 320, self.view.bounds.size.height); 

Answer 2

只需检查您添加滚动视图的视图是否启用了AutoResizeSubviews。 如果不是，它将不会根据屏幕大小调整滚动视图。

其次，根据3.5英寸屏幕调整滚动视图，AutoResizing将调整为4英寸屏幕。 反之亦然。

对于页面控制，请这样做。 它始终位于您视图的底部。

Answer 3

在Supporting Files文件夹中选择yourappname.pch，并在文件底部的最后一个#endif之前添加此行，以检查设备….

#define IS_IPHONE5 (([[UIScreen mainScreen] bounds].size.height-568)?NO:YES)

然后在ViewWillAppear（）中写这个

  if (IS_IPHONE5) { scrollView.contentSize = CGSizeMake(width,height ); }