Ios 7 自定义 UINavigationController 动画在目标控制器中使用 mapView 失败

Question

我在UViewControllerinside UINavigationViewController 之间玩弄新的UIViewControllerContextTransitioning

我拥有的和想要实现的很简单，但我在某个地方失败了

我在UIScrollView 中有一个MKMapView (300px * 60px)。通过单击该地图（无论它在可见滚动的哪个位置），我想转到下一个包含全尺寸 MKMapView 的视图。 我想要的感觉和动画是让用户感觉他们被吸进了地图（有点）=）

到目前为止，我已添加： <UIViewControllerTransitioningDelegate, UINavigationControllerDelegate>

和

-(id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC{

if (operation == UINavigationControllerOperationPush) {
    NSLog(@"inside itself");
    FixRTransitionAnimator *animator = [FixRTransitionAnimator new];
    animator.presenting = YES;
    CGRect absoluteframe = [self.mainScrollView convertRect:self.mapView.frame toView:self.view];
    animator.mapFrame = absoluteframe;
    NSLog(@"the map frame is %@", NSStringFromCGRect(self.mapView.frame));
    return animator;
}
else
    NSLog(@"nope its outside");
return nil;
}

对于我拥有的prepareForSegue 方法：

   [super prepareForSegue:sender sender:sender];

    MapViewController *mapViewController = segue.destinationViewController;
    mapViewController.transitioningDelegate = self;
    mapViewController.modalPresentationStyle = UIModalPresentationCustom;

最后我有了`FixRTransitionAnimator.m`

-(NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext{
NSLog(@"the time is timed");
return 0.5f;
}
 -(void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext{
NSLog(@"we are inside %@",NSStringFromCGRect(self.mapFrame));
UIViewController *fromVController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
UIViewController *toVController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

CGRect endFrame = CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width,[UIScreen mainScreen].bounds.size.height);

if (self.presenting) {
    fromVController.view.userInteractionEnabled = NO;

    [[transitionContext containerView]addSubview:fromVController.view];
    [[transitionContext containerView]addSubview:toVController.view];

    toVController.view.frame = self.mapFrame;


     [UIView animateWithDuration:[self transitionDuration:transitionContext]      animations:^{
        fromVController.view.tintAdjustmentMode = UIViewTintAdjustmentModeDimmed;
        NSLog(@"inside the animation");
        toVController.view.frame = endFrame;
    } completion:^(BOOL finished) {
        [transitionContext completeTransition:YES];
    }];
}else{
   ...
}

}

在destinationViewController 为空的情况下，过渡动画效果很好。但是动画里面的地图真的很奇怪，完全不是我想要的。

Any1 有什么我想念或需要思考的指针吗？

Answer 1

我在另一个answer 中写了一篇文章，但请确保您正在设置您的 UINavigationControllerDelegate。

UIViewControllerTransitioningDelegate 用于提供的 控制器，UINavigationControllerDelegate 用于推送 控制器。协议中的委托方法返回您的动画师。