如何获得一个uinavigation栏返回button返回到视图控制器
我将如何去有一个UINavigation控制器导航不是以前的观点,而是之前的观点。 基本上我想跳回2个地方而不是默认的地方。
这是非常规的,我敢肯定,但我现在只需要做。
self.navigationItem.backBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:nil action:nil] autorelease];
谢谢你的帮助。
组:
self.navigationItem.backBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(goBack)] autorelease];
然后创build一个方法-goBack
-(void)goBack { UIViewController *ctrl = [self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count - 2]; [self.navigationController popToViewController:ctrl animated:YES]; }
self.navigationItem.backBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(youractonEvent:] autorelease];
如果你不想依赖数组的索引,那么你可以做一些事情如下:
MyController * aMyController = nil ; for (int i=0; i<[[self.navigationController viewControllers] count]; i++) { NSLog(@"%@",[[self.navigationController viewControllers] objectAtIndex:i]); if ([[[self.navigationController viewControllers] objectAtIndex:i] isKindOfClass:[MyController class]]) { aMyController = [[self.navigationController viewControllers] objectAtIndex:i]; } } [self.navigationController popToViewController:aMyController animated:YES];
如果您在NavigationController中有三个视图控制器,并且您正在查看第三个视图控制器,并且您想要跳转到第一个视图控制器。
尝试这个。 这将导航你两次回来。
[self.navigationController popToViewController:[[self.navigationController viewControllers] objectAtIndex:0] animated:YES];
在你的情况下设置适当的值,而不是0。
将目标添加到您添加的button
然后使用下面的代码返回多个viewController
//Get the view controller that is 2 step behind UIViewController *controller = [nav.viewControllers objectAtIndex:nav.viewControllers.count - 2]; //Go to that controller [nav popToViewController:controller animated:YES];