Ios 旋转后禁用UIScrollView分页

下面是我使用UIScrollView和使用AutoLayout（）启用分页的应用程序巡更的代码，它在纵向上运行良好，但当我旋转分页时会被禁用，因此在横向上不工作。那么它在纵向模式下也不工作。有人能帮忙吗这里出了什么问题

- (void)viewDidLoad {
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor clearColor];

    self.scrollView = [UIScrollView new];
    self.scrollView.backgroundColor = [UIColor clearColor];
    self.scrollView.scrollEnabled = YES;
    self.scrollView.pagingEnabled = YES;
    self.scrollView.delegate = self;
    self.scrollView.showsHorizontalScrollIndicator = NO;
    [self.view addSubview:self.scrollView];

    [self.scrollView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];

    UIImageView *esImageview1 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"CommonResources.bundle/page1"]];
    esImageview1.contentMode = UIViewContentModeScaleAspectFit;
    esImageview1.backgroundColor = [UIColor clearColor];
    esImageview1.userInteractionEnabled = YES;
    [self.scrollView addSubview:esImageview1];

    [esImageview1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.top.bottom.equalTo(self.scrollView);
        make.width.height.equalTo(self.view);
    }];

    UIImageView *esImageview2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"CommonResources.bundle/page2"]];
    esImageview2.contentMode = UIViewContentModeScaleAspectFit;
    esImageview2.backgroundColor = [UIColor clearColor];
    esImageview2.userInteractionEnabled = YES;
    [self.scrollView addSubview:esImageview2];

    [esImageview2 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(esImageview1.mas_right);
        make.top.bottom.equalTo(self.scrollView);
        make.width.height.equalTo(self.view);
    }];

    UIImageView *esImageview3 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"CommonResources.bundle/page3"]];
    esImageview3.contentMode = UIViewContentModeScaleAspectFit;
    esImageview3.backgroundColor = [UIColor clearColor];
    esImageview3.userInteractionEnabled = YES;
    [self.scrollView addSubview:esImageview3];

    [esImageview3 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(esImageview2.mas_right);
        make.top.bottom.equalTo(self.scrollView);
        make.width.height.equalTo(self.view);
    }];

    self.pageControl = [UIPageControl new];
    self.pageControl.numberOfPages = 3;
    self.pageControl.currentPage = 0;
    self.pageControl.backgroundColor = [UIColor clearColor];
    [self.view addSubview:self.pageControl];

    [self.pageControl mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.equalTo(self.view);
        make.height.equalTo(@40);
        make.top.equalTo(self.view).with.offset(40);
    }];

    UILabel *titleLabel = [UILabel new];
    titleLabel.text = @"App Tour";
    titleLabel.backgroundColor = [UIColor clearColor];
    titleLabel.textColor = [UIColor whiteColor];
    titleLabel.font = [UIFont fontWithName:@"Helvetica-Light" size:16];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    [self.view addSubview:titleLabel];

    [titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.equalTo(self.view);
        make.height.equalTo(@40);
        make.top.equalTo(self.view).with.offset(20);
    }];

    UIButton *doneButton = [UIButton new];
    [doneButton.titleLabel setFont:[UIFont fontWithName:@"Helvetica-Light" size:16]];
    [doneButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [doneButton setTitleColor:[UIColor grayColor] forState:UIControlStateHighlighted];
    [doneButton setTitle:@"Done" forState:UIControlStateNormal];
    [doneButton addTarget:self action:@selector(doneButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    doneButton.backgroundColor = [UIColor clearColor];
    [self.view addSubview:doneButton];

    [doneButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.view);
        make.height.equalTo(@40);
        make.width.equalTo(@70);
        make.top.equalTo(self.view).with.offset(20);
    }];
}

- (void)doneButtonPressed:(id)sender {
    [self dismissViewControllerAnimated:YES completion:nil];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width*self.pageControl.numberOfPages, self.view.frame.size.height);
}

- (void)scrollViewDidScroll:(UIScrollView *)sender {
    CGFloat pageWidth = self.scrollView.frame.size.width;
    int page = floor((self.scrollView.contentOffset.x - pageWidth / 2) / pageWidth) + 1;
    self.pageControl.currentPage = page;
}

---

我猜它被另一个视图或类似的东西掩盖了。尝试对UIScrollView进行子类化，并实现以下方法来检查它是否响应您的触摸

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    NSLog(@"OMG TOUCHES WORK, NOW WHAT?");
}

你可以很容易地通过强迫它在前面来检查它是否被掩盖了。在包含UIScrollView的UIViewController中的循环回调中调用这行代码。它应该可以解决这个问题。您可能需要为控制器对UIView进行子类化，并将此方法放在didLayoutSubviews方法中，这取决于您的实现

[self.view bringSubViewToFront:self.scrollView];

---

还要检查旋转前后的帧和边界，看看是否有任何东西不合适，我只是想在didRotateFromInterfaceOrientation委托中重置Scrollview的contentsize。不知道为什么，因为当我旋转时，videDidLayoutSubview已经被调用，而我已经在重置内容大小

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    self.scrollView.contentSize = CGSizeMake(self.view.frame.size.width*self.pageControl.numberOfPages, self.view.frame.size.height);
}

---

我已经检查过了，没有任何东西遮住了我的视线。在上面我有每页的图片。当我旋转scrollview时，它会自动滚动到第一页，然后停止分页，再也不会返回，这很奇怪。Top imageview是否有可能丢失启用交互的属性？我在旋转后添加了图像-请注意，我在顶部的scrollview中有一个imageview，这是预期的。据我所知，它不会丢失enabled属性。您是否尝试过对touchs方法进行子类化和实现。因为这会告诉你很多。还有一个非常不错的新特性，我喜欢（如果您使用的是xCode 6，您应该这样做）新的“查看调试”特性。你可以在这里读到更多，