消除解除viewcontroller和呈现新viewcontroller之间的延迟

Question

我已经成功解除了一个视图控制器，并提出了一个新的视图控制器，但新的视图控制器出现了一点延迟。如何消除延迟？我目前的代码是：

 UIViewController * vcb=self.presentingViewController;

 [self dismissViewControllerAnimated:YES completion:^{

      UIStoryboard * storyBoard=[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
      ContactsViewController * VC=[storyBoard instantiateViewControllerWithIdentifier:@"contactsView"];

      [vcb presentViewController:VC animated:YES completion:nil];

}];

Answer 1

你必须表明不需要动画过渡。将您的代码更改为...

 UIViewController * vcb=self.presentingViewController;

 [self dismissViewControllerAnimated:YES completion:^{

      UIStoryboard * storyBoard=[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
      ContactsViewController * VC=[storyBoard instantiateViewControllerWithIdentifier:@"contactsView"];

      [vcb presentViewController:VC animated:NO completion:nil];

}];

如果你需要lees延迟试试这个......

 UIViewController * vcb=self.presentingViewController;

 [self dismissViewControllerAnimated:NO completion:^{

      UIStoryboard * storyBoard=[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
      ContactsViewController * VC=[storyBoard instantiateViewControllerWithIdentifier:@"contactsView"];

      [vcb presentViewController:VC animated:NO completion:nil];

}];