默认情况下,UISplitViewController提供滑动手势以纵向模式打开主视图。
不幸的是,即使操作详细页面上的滑块,此手势也会打开主控制器!我在这里发现了另一个问题,这个问题被标记为iOS 5.1报告的错误,但问题仍然存在于iOS7上......
现在有办法在这种情况下抑制这种姿势吗?我意识到我可以完全删除它:
splitViewController.presentsWithGesture = NO;
然而,允许手势并且仍然有可用的滑块会很好!
答案 0 :(得分:6)
在试验之后,我想知道如果我尝试创建自己的滑动手势来打开主视图会发生什么。这非常有效,使用滑块时也不会失败!
因此,在app委托中,我禁止默认滑动手势:
splitViewController.presentsWithGesture = NO;
加载详细视图后,我会创建一个滑动手势:
- (void)viewDidLoad
{
[super viewDidLoad];
UISwipeGestureRecognizer *swipeGestureRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleRightSwipe:)];
swipeGestureRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:swipeGestureRecognizer];
[self configureView];
}
在splitViewController中:willHideViewController:withBarButtonItem:forPopoverController:我存储了自己打开主视图所需的引用:
- (void)splitViewController:(UISplitViewController *)splitController willHideViewController:(UIViewController *)viewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController *)popoverController
{
// Add the bar item to the navigation bar
barButtonItem.title = NSLocalizedString(@"Master", @"Master");
[self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];
// Store references to the button and popover controller so that we can manually open the view using a custome swipe gesture
self.masterPopoverButton = barButtonItem;
self.masterPopoverController = popoverController;
}
最后,我处理了滑动:
- (void)handleRightSwipe:(UISwipeGestureRecognizer *)recognizer {
// Find the root controller in the stack (this is the one that's also the split view's delegate, and thus has access
// to the pop over controller.
MyDetailViewController *rootController = (MyDetailViewController *)[self.navigationController.viewControllers objectAtIndex:0];
if (!rootController.masterPopoverController.popoverVisible) {
[rootController.masterPopoverController presentPopoverFromBarButtonItem:rootController.masterPopoverButton permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
}
这将在主视图控制器中滑动。我担心这会将控制器显示为传统的popover(带箭头等),但实际上它做的是正确的(至少它在iOS 7下 - 我没有测试过早期版本)。
请注意,您需要为推送到导航控制器堆栈的每个视图创建此手势。在我的情况下,它始终是相同的视图,因此简化了事情。在其他情况下,最好创建一个UIViewController的子类来创建这个手势并处理它,然后将其用作任何被推送的控制器的超类...