嵌套的UIScrollView的尋呼

Question

我想實現一個尋址解決方案使用嵌套UIScrollView的和有一個討厭的問題，我覺得很麻煩解決。

視圖加載得很好，但只要用戶啓動滾動，視圖會從頂部彈出約20個像素，並在被拉下時彈回到該位置。

我遵循其他回答問題的指導原則，但似乎無法確定問題所在。

當我自己使用innerScroll時，垂直工作得很好。
不久，我嵌套它，問題發生。

我試圖將contentSize的高度增加到高於內容的高度，因爲我猜想這會是問題，但似乎沒有什麼區別。

CGRect screenSize = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height); 

_theScrollView=[[customScrollView alloc] initWithFrame:screenSize]; 
_theScrollView.pagingEnabled = YES; 
_theScrollView.directionalLockEnabled = YES; 
_theScrollView.bounces = NO; 

UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction 
                      target:self 
                      action:@selector(performAction:)]; 
NSArray* buttons = [[NSArray alloc]initWithObjects:barButton, nil]; 

CGSize scrollViewContentSize = screenSize.size; 
scrollViewContentSize.width = screenSize.size.width * self.thisform.formPages.count; 
scrollViewContentSize.height = self.view.bounds.size.height; 
_theScrollView.contentSize = scrollViewContentSize; 

self.actionButton = barButton; 
self.picVisible = NO; 

self.navigationItem.rightBarButtonItems = buttons; 

UIBarButtonItem* backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" 
                   style:UIBarButtonItemStyleBordered 
                   target:self 
                   action:@selector(onCancelButtonSelected:)]; 
self.navigationItem.leftBarButtonItem = backButton; 

[self.view setUserInteractionEnabled:YES]; 

self.views = [[NSMutableArray alloc] initWithCapacity:_thisform.formPages.count]; 

int i = 0; 
NSSortDescriptor *byPage = [[NSSortDescriptor alloc] initWithKey:@"formPageNumber" 
                 ascending:YES]; 

NSArray *sortedPages = [self.thisform.formPages sortedArrayUsingDescriptors:[NSArray arrayWithObjects: byPage, nil]]; 

float zoomScale=1.0; 

UIInterfaceOrientation interfaceOrientation = self.interfaceOrientation; 

if(interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown) { 
    zoomScale=1.0; 
} else { 
    zoomScale=1.3; 
} 

BOOL isNew; 

for (FormPages *page in sortedPages) { 
    NSData *formImage = page.formPage; 

    //innerScroll 
    UIImage *image = [UIImage imageWithData:formImage]; 
    Imager *imageView = [[Imager alloc] initWithImage:image]; 
    [imageView setUserInteractionEnabled:YES]; 
    imageView.tag = page.formPageNumber; 
    imageView.fieldCollection = [Utility populateFormFields:self.thisform 
               pagenumber:page.formPageNumber]; 

    CGRect frame = CGRectMake(_theScrollView.bounds.size.width * i, 0, _theScrollView.bounds.size.width, _theScrollView.bounds.size.height); 

    float contentWidth = _theScrollView.bounds.size.width; 
    float contentHeight = imageView.frame.size.height; 

    CGSize contentSize = CGSizeMake (contentWidth,contentHeight); 

    TPKeyboardAvoidingScrollView *innerScroll = [[TPKeyboardAvoidingScrollView alloc] initWithFrame:frame]; 

    innerScroll.contentSize = contentSize; 
    [innerScroll setUserInteractionEnabled:YES]; 
    innerScroll.minimumZoomScale=1; 
    innerScroll.zoomScale = zoomScale; 
    innerScroll.maximumZoomScale=2.5; 
    innerScroll.delegate = self; 
    innerScroll.scrollsToTop=NO; 
    innerScroll.currentView = imageView; 

    imageView.frame = screenSize; 

    CGSize pageSize = [Utility GetPageSize:self.thisform]; 

    float viewWidth = imageView.frame.size.width; 
    float formWidth = pageSize.width; 
    float viewHeight = imageView.frame.size.height; 
    float formHeight = pageSize.height; 

    float widthRatio = viewWidth/formWidth; 
    float heightRatio = viewHeight/formHeight; 

    [self populateControls:NO 
         view:imageView 
       widthRatio:widthRatio 
       heightRatio:heightRatio]; 

    [innerScroll addSubview:imageView]; 
    [_theScrollView addSubview:innerScroll]; 
    [self.views addObject:innerScroll]; 

    i++; 
} 

[self.view addSubview:_theScrollView]; 

Answer 1

在UINavigationBar的的IOS7透光性在以前的IOS版本在以前回答過的問題設置爲YES默認，而不是爲NO。

View got hidden below UINavigationBar iOS 7