ios - Objective C 如何在从第一个 VC 移动到第二个时停止无限循环

Question

我正在尝试构建启动画面，所以我希望第一个 View Controller 在 3.0 秒后自动移动到第二个 ViwController 我已经尝试了以下方法但是无限循环已经开始我应该做什么，我应该如何在第二个停止 View Controller 。

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSLog(@"%p", self);
    NSLog(@"1st Controller");

    [self.navigationController setNavigationBarHidden:YES animated:YES];
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{


        [self loadingNextView];
      });

}

    - (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
}
- (void)loadingNextView{

    LoginViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:@"LoginViewController"];
    [self.navigationController pushViewController:viewController animated:true];
}
//LoginViewController.h
@interface LoginViewController : ViewController

@end
//LoginViewController.m

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    NSLog(@"2nd View Controller");
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

三秒后查看循环如何工作。

Answer 1

你为什么不使用 NSTimer 类。只需创建一个 10 秒的计时器，当 10 秒过去时计时器将触发该事件，在该事件中您可以移动到另一个 Controller 。创建一个像这样的计时器

[NSTimer scheduledTimerWithTimeInterval:10.0
        target:self
        selector:@selector(targetMethod:)
        userInfo:nil
        repeats:NO];



    - (void)targetMethod:(NSTimer*)timer {
        [self loadingNextView];
    }