在自定義細分中動畫導航欄

Question

我試圖在執行自定義細分時爲導航欄設置動畫。導航欄由導航控制器控制。下面的代碼允許嵌入視圖淡入淡出並放大視圖，儘管導航欄保持不動。導航欄中的更改如何動畫？

#import "MDAZoomSegue.h" 

@implementation MDAZoomSegue 

- (void)perform { 

    UIViewController *sourceViewController = (UIViewController *) self.sourceViewController; 
    UIViewController *destinationViewController = (UIViewController *) self.destinationViewController; 

    [sourceViewController.view addSubview:destinationViewController.view]; 
    [destinationViewController.view setFrame:sourceViewController.view.window.frame]; 
    [destinationViewController.view setTransform:CGAffineTransformMakeScale(1.2,1.2)]; 
    [destinationViewController.view setAlpha:0]; 

    [UIView animateWithDuration:0.5 
          delay:0.0 
         options:UIViewAnimationCurveEaseOut 
        animations:^{ 
         [destinationViewController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)]; 
         [destinationViewController.view setAlpha:1.0]; 
        } 
        completion:^(BOOL finished){ 
         [destinationViewController.view removeFromSuperview]; 
         [sourceViewController.navigationController pushViewController:destinationViewController animated:NO]; 
        }]; 

} 

@end 

Answer 1

如果你考慮到控制器的視圖層次，你就會意識到，navigationController的觀點是對控制器的視圖中的上海華。因此，如果您想要移動destinationViewController的導航欄，而不是在destinationViewController.view上執行操作，請使用destinationViewController.navigationController.view。

換句話說，改變執行到

- (void)perform { 

    UIViewController *sourceViewController = (UIViewController *) self.sourceViewController; 
    UIViewController *destinationViewController = (UIViewController *) self.destinationViewController; 

    [sourceViewController.view addSubview:destinationViewController.navigationController.view]; 
    [destinationViewController.navigationController.view setFrame:sourceViewController.view.window.frame]; 
    [destinationViewController.navigationController.view setTransform:CGAffineTransformMakeScale(1.2,1.2)]; 
    [destinationViewController.navigationController.view setAlpha:0]; 

    [UIView animateWithDuration:0.5 
          delay:0.0 
         options:UIViewAnimationCurveEaseOut 
        animations:^{ 
         [destinationViewController.navigationController.view setTransform:CGAffineTransformMakeScale(1.0,1.0)]; 
         [destinationViewController.navigationController.view setAlpha:1.0]; 
        } 
        completion:^(BOOL finished){ 
         [destinationViewController.navigationController.view removeFromSuperview]; 
         [sourceViewController.navigationController pushViewController:destinationViewController animated:NO]; 
        }]; 

} 

@end 

我相信你會看到導航欄動畫爲好。