Ios7 iOS 7.1中的模式自定义段在被解除时发出警告 出身背景

我做了一个自定义的序列，允许“叠加卡”从顶部滑下，然后在被解雇时飞走。在编写代码时，我意识到所有示例都使用了

UIViewControllerTransitioningDelegate

来捕获segue被动画化/取消的时间。到目前为止还不错，但我发现的所有示例都让

presentingController

充当代理，这听起来很奇怪，因为我需要在两个地方“分发”我的“叠加卡”的逻辑；自定义序列和显示控制器

因此，我想我可以把两者结合在一起；自定义segue会使我的故事板更加整洁，因为我想显示为“叠加卡”的所有视图控制器都被分配了我创建的“CardSegue”，而不是让每个呈现控制器实现

UIViewControllerTransitioningDelegate

问题 从其中一个呈现控制器，我在解除呈现的“叠加卡”时收到警告

我环顾四周，我所能找到的只是另一个似乎很有前途的职位；

但是，问题是，由于我的自定义segue是TransitionLegate，试图将其作为一个逻辑单元，因此我无法真正应用保留委托的推理。。。？我的意思是，segue正在运行——因此，代理仍然活着，而且状态良好。我遗漏了一些东西，或者有一个明显的原因，我现在无法理解为什么必须将

transitionlegate

与自定义segue分开

我的代码

#定义弹出窗口#u边距25
@接口CardSegue（）
@属性（非原子、赋值、getter=isPresenting）布尔呈现；
@结束
@实现卡德塞格
-（无效）履行
{
//确保我们是代表。。。
[self.destinationViewController SetTransitionDelegate:self]；
[self.destinationViewController setModalPresentationStyle:UIModalPresentationCustom]；
//暴力展示最终结果！
[[self sourceViewController]presentViewController:[self destinationViewController]已设置动画：是完成：无]；
}
#pragma mark-UIViewControllerTransitioningDelegate方法
-（id）显示了animationControllerForPresentedController:（UIViewController*）
呈现控制器：（UIViewController*）呈现
sourceController:（UIViewController*）源
{
//配置动画师
自我呈现=是；
回归自我；
}
-（id）animationControllerForDismissedController:（UIViewController*）已解除
{
自我呈现=否；
回归自我；
}
#pragma mark-UIViewControllerContext转换方法
-（NSTimeInterval）transitionDuration：（id）transitionContext
{
返回0.5f；
}
-（void）animateTransfion:（id）transitionContext
{
//从上下文中获取“从”和“到”视图控制器
UIViewController*fromViewController=[transitionContext ViewControllerWorky:UITransitionContextFromViewControllerKey]；
UIViewController*toViewController=[transitionContext ViewControllerWorky:UITransitionContextToViewControllerKey]；
如果（自我介绍）
{
//设置结束帧。如果有必要，我们将稍后修改此帧
CGRect frame=fromViewController.view.frame；
CGRect endFrame=CGRectMake（弹出框边距，弹出框边距，frame.size.width-2*弹出框边距，frame.size.height-2*弹出框边距）；
fromViewController.view.userInteractionEnabled=否；
toViewController.view.alpha=0.0f；
toViewController.view.layer.cornerRadius=15；
//toViewController.view.layer.borderWidth=1.5f；
toViewController.view.layer.masksToBounds=是；
UIView*mainView=[[UIView alloc]initWithFrame:CGRectMake（0,0，frame.size.width，frame.size.height）]；
mainView.backgroundColor=[[UIColor alloc]initWithRed:0.0绿色：0.0蓝色：0.0阿尔法：0.0]；
[transitionContext.containerView添加子视图：fromViewController.view]；
[transitionContext.containerView添加子视图：mainView]；
[transitionContext.containerView addSubview:toViewController.view]；
CGRect startFrame=结束帧；
startFrame.origin.y-=frame.size.height；
toViewController.view.frame=startFrame；
[UIView animateWithDuration:[self-transitionDuration:transitionContext]动画：^{
mainView.backgroundColor=[[UIColor alloc]initWithRed:0.0绿色：0.0蓝色：0.0阿尔法：0.5]；
fromViewController.view.tintAdjustmentMode=UIViewTintAdjustmentMode变暗；
toViewController.view.frame=结束帧；
toViewController.view.alpha=1.0f；
}完成：^（布尔完成）{
[transitionContext completeTransition:是]；
}];
}
否则{
//设置结束帧。如果有必要，我们将稍后修改此帧
CGRect frame=toViewController.view.frame；
CGRect endFrame=CGRectMake（弹出框边距，弹出框边距，frame.size.width-2*弹出框边距，frame.size.height-2*弹出框边距）；
toViewController.view.userInteractionEnabled=是；
UIView*mainView=[[UIView alloc]initWithFrame:CGRectMake（0,0，frame.size.width，frame.size.height）]；
mainView.backgroundColor=[[UIColor alloc]initWithRed:0.0绿色：0.0蓝色：0.0阿尔法：0.5]；
[transitionContext.containerView addSubview:toViewController.view]；
[transitionContext.containerView添加子视图：mainView]；
[transitionContext.containerView添加子视图：fromViewController.view]；
endFrame.origin.y+=frame.size.height；
[UIView animateWithDuration:[self-transitionDuration:transitionContext]动画：^{
toViewController.view.tintAdjustmentMode=UIViewTintAdjustmentModeAutomatic；
mainView.backgroundColor=[[UIColor alloc]initWithRed:0.0绿色：0.0蓝色：0.0阿尔法：0.0]；
UIModalPresentationCustom presentation style can only be used with an animator or with unanimated dismissals.

#define POPUP_MARGIN    25

@interface CardSegue () <UIViewControllerTransitioningDelegate, UIViewControllerAnimatedTransitioning>

@property (nonatomic, assign, getter = isPresenting) BOOL presenting;

@end

@implementation CardSegue

- (void)perform
{
    //Make sure that we are the delegate...
    [self.destinationViewController setTransitioningDelegate:self];
    [self.destinationViewController setModalPresentationStyle:UIModalPresentationCustom];

    //Brute-force show the end-result!
    [[self sourceViewController] presentViewController:[self destinationViewController] animated:YES completion:nil];
}

#pragma mark - UIViewControllerTransitioningDelegate Methods

- (id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented
                                                                  presentingController:(UIViewController *)presenting
                                                                      sourceController:(UIViewController *)source
{
    //Configure the animator
    self.presenting = YES;
    return self;
}

- (id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed
{
    self.presenting = NO;
    return self;
}

#pragma mark - UIViewControllerContextTransitioning Methods

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5f;
}

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
    // Grab the from and to view controllers from the context
    UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

    if (self.presenting)
    {
        // Set our ending frame. We'll modify this later if we have to
        CGRect frame = fromViewController.view.frame;
        CGRect endFrame = CGRectMake(POPUP_MARGIN, POPUP_MARGIN, frame.size.width - 2 * POPUP_MARGIN, frame.size.height - 2 * POPUP_MARGIN);
        fromViewController.view.userInteractionEnabled = NO;
        toViewController.view.alpha = 0.0f;
        toViewController.view.layer.cornerRadius = 15;

        //toViewController.view.layer.borderWidth = 1.5f;
        toViewController.view.layer.masksToBounds = YES;

        UIView *mainView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
        mainView.backgroundColor = [[UIColor alloc] initWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];

        [transitionContext.containerView addSubview:fromViewController.view];
        [transitionContext.containerView addSubview:mainView];
        [transitionContext.containerView addSubview:toViewController.view];

        CGRect startFrame = endFrame;
        startFrame.origin.y -= frame.size.height;

        toViewController.view.frame = startFrame;

        [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
            mainView.backgroundColor = [[UIColor alloc] initWithRed:0.0 green:0.0 blue:0.0 alpha:0.5];
            fromViewController.view.tintAdjustmentMode = UIViewTintAdjustmentModeDimmed;
            toViewController.view.frame = endFrame;
            toViewController.view.alpha = 1.0f;
        } completion:^(BOOL finished) {
            [transitionContext completeTransition:YES];
        }];
    }
    else {
        // Set our ending frame. We'll modify this later if we have to
        CGRect frame = toViewController.view.frame;
        CGRect endFrame = CGRectMake(POPUP_MARGIN, POPUP_MARGIN, frame.size.width - 2 * POPUP_MARGIN, frame.size.height - 2 * POPUP_MARGIN);
        toViewController.view.userInteractionEnabled = YES;

        UIView *mainView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, frame.size.height)];
        mainView.backgroundColor = [[UIColor alloc] initWithRed:0.0 green:0.0 blue:0.0 alpha:0.5];

        [transitionContext.containerView addSubview:toViewController.view];
        [transitionContext.containerView addSubview:mainView];
        [transitionContext.containerView addSubview:fromViewController.view];

        endFrame.origin.y += frame.size.height;

        [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
            toViewController.view.tintAdjustmentMode = UIViewTintAdjustmentModeAutomatic;
            mainView.backgroundColor = [[UIColor alloc] initWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];
            fromViewController.view.frame = endFrame;
            fromViewController.view.alpha = 0.0f;
        } completion:^(BOOL finished) {
            [transitionContext completeTransition:YES];
        }];
    }
}

@end