UIViewAnimationOption Enum Cover Vertical

Question

我想用自定义模态动画推送ViewController。我更喜欢使用“Cover Vertical”动画。 “封面垂直”是否有MDAVSCLI : error : The edge module has not been pre-compiled for node.js version v4.1.1. You must build a custom version of edge.node. Please refer to https://github.com/tjanczuk/edge for building instructions. ？

UIViewAnimationOption

将[self.navigationController pushViewController:myViewController animated:NO]; [UIView transitionWithView:self.navigationController.view duration:1 options:UIViewAnimationOptionCurveEaseIn animations:nil completion:nil]; 替换为......？或者有更好的方法吗？

Answer 1

您需要使用动画控制器。设置它的代码如下所示：

- (id)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController (UIViewController *)source
{
    return self.animationController;
}

- (id )animationControllerForDismissedController:(UIViewController *)dismissed {
     self.animationController.isPresenting = NO;

    return self.animationController;
}

然后您需要使用以下方法确定您是否正在展示或解雇：

-(void)animateTransition:(id)transitionContext{

if(self.isPresenting){
    [self executePresentationAnimation:transitionContext];
}
else{
    [self executeDismissalAnimation:transitionContext];
}

}

最后，您定义了动画，以下代码将从顶部推送视图作为模态视图：

-(void)executePresentationAnimation:(id)transitionContext{

UIView* inView = [transitionContext containerView];

UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

[inView addSubview:toViewController.view];

CGPoint centerOffScreen = inView.center;

centerOffScreen.y = (-1)*inView.frame.size.height;
toViewController.view.center = centerOffScreen;

[UIView animateWithDuration:self.presentationDuration delay:0.0f usingSpringWithDamping:0.4f initialSpringVelocity:6.0f options:UIViewAnimationOptionCurveEaseIn animations:^{

    toViewController.view.center = inView.center;

} completion:^(BOOL finished) {

    [transitionContext completeTransition:YES];
}];
}

当你解雇相反时，应该发生：

-(void)executeDismissalAnimation:(id)transitionContext{

UIView* inView = [transitionContext containerView];

UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];

UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];

[inView insertSubview:toViewController.view belowSubview:fromViewController.view];

CGPoint centerOffScreen = inView.center;
centerOffScreen.y = (-1)*inView.frame.size.height;

[UIView animateKeyframesWithDuration:self.dismissalDuration delay:0.0f options:UIViewKeyframeAnimationOptionCalculationModeLinear animations:^{

    [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:0.5 animations:^{

        CGPoint center = fromViewController.view.center;
        center.y += 50;
        fromViewController.view.center = center;
    }];

    [UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.5 animations:^{

        fromViewController.view.center = centerOffScreen;

    }];


} completion:^(BOOL finished) {
    [transitionContext completeTransition:YES];
}];
}