UIScrollView 控制器 - 从嵌套笔尖更改滚动视图属性？

Question

我目前正在开发一个使用scrollViewController 的应用程序，因为我需要垂直和水平滚动，以便加载NIB 的嵌套。

这一切都工作得很好，但是当我将 UIPicker 添加到我的一个嵌套笔尖中时，它不会滚动，我读到可以通过在 UIScrollView 中禁用滚动来轻松修复此问题，但是我不 100% 确定如何从其他类中执行此操作。

在mainView.m

@interface scrollViewController : UIViewController <UIScrollViewDelegate>{

    UIScrollView* scrollView;
    UIPageControl* pageControl;

    UIScrollView *vScrollView;
    UIScrollView *hScrollView;

    BOOL pageControlBeingUsed;
}

@property (nonatomic, retain) IBOutlet UIScrollView* scrollView;
@property (nonatomic, retain) IBOutlet UIPageControl* pageControl;

@property (nonatomic, retain) UIScrollView *vScrollView;
@property (nonatomic, retain) UIScrollView *hScrollView;

- (IBAction)changePage;

@end

中，

- (void)viewDidLoad
{
    [super viewDidLoad];

    CGRect bounds = self.view.bounds;

    // main guy is a horizontal scroller
    hScrollView = [[UIScrollView alloc] initWithFrame:bounds];
    hScrollView.contentSize = CGSizeMake(bounds.size.width * 2, bounds.size.height);
    hScrollView.delegate = self;
    [self.view addSubview:hScrollView];

    // the horizontal scroller contains a vertical scroller
    vScrollView = [[UIScrollView alloc] initWithFrame:bounds];
    vScrollView.contentSize = CGSizeMake(bounds.size.width, bounds.size.height * 2);
    vScrollView.delegate = self;
    [hScrollView addSubview:vScrollView];


    2ndView *view2 = [[2ndView alloc] initWithNibName:@"2ndView" bundle:nil];
    [vScrollView addSubview:view2.view];
    vScrollView.contentOffset = CGPointMake(0, bounds.size.height);

    mainView *vc = [[mainView alloc] initWithNibName:@"mainView" bundle:nil];
    vc.view.frame = CGRectOffset(bounds, 0, bounds.size.height); 
    [vScrollView addSubview:vc.view];


    // 3rd View
    ValidatorView *vc3 = [[ValidatorView alloc] initWithNibName:@"ValidatorView" bundle:nil];
    vc3.view.frame = CGRectOffset(bounds, bounds.size.width, 0); 

    [hScrollView addSubview:vc3.view]; 

    // enable paging in both directions
    hScrollView.pagingEnabled = TRUE;
    vScrollView.pagingEnabled = TRUE;

    hScrollView.showsHorizontalScrollIndicator = FALSE;
    vScrollView.showsVerticalScrollIndicator = FALSE;
    hScrollView.alwaysBounceHorizontal = FALSE;
    vScrollView.alwaysBounceVertical = FALSE;
    vScrollView.canCancelContentTouches =   NO;
    vScrollView.delaysContentTouches = NO;    
    hScrollView.bounces = FALSE;
    vScrollView.bounces = FALSE;
}

我创建了一个按钮，将 UIPicker 带到视图上，但是我希望它使用属性

vScrollView.scrollEnabled = NO; 更新滚动视图控制器中的 vScrollView；

对此的任何帮助将不胜感激。

谢谢亚伦

Answer 1

您可以在应用程序委托类中拥有一个指向滚动视图控制器的实例变量，然后您可以将该实例变量的 scrollEnabled 设为 NO