Xamarin.forms页面之间导航的自定义动画

Question

我使用Xamarin.Forms创建了一个简单的应用程序，需要将导航设置为up&左下状态&右侧

Answer 1

如果您想要up&向下动画（不是自定义动画），您可以简单地使用Navigation.PushModalAsync(page)来呈现页面。

---

此外，我刚刚写了一个自定义渲染器来更改iOS上的动画。

[assembly: ExportRenderer(typeof(NavigationPage), typeof(AnimationNavigationRenderer))]
class AnimationNavigationRenderer : NavigationRenderer
{
    public override void PushViewController(UIViewController viewController, bool animated)
    {
        if (animated)
        {
            // Alternative way with different set of trannsition
            /*
            UIView.Animate(0.75, () =>
            {
                UIView.SetAnimationCurve(UIViewAnimationCurve.EaseInOut);
                base.PushViewController(viewController, false);
                UIView.SetAnimationTransition(UIViewAnimationTransition.CurlUp, this.View, false);
            });
             */
            var transition = CATransition.CreateAnimation();
            transition.Duration = 0.75;
            transition.Type = CAAnimation.TransitionPush;
            View.Layer.AddAnimation(transition, null);
            base.PushViewController(viewController, false);
        }
        else
        {
            base.PushViewController(viewController, false);
        }
    }
    public override UIViewController PopViewController(bool animated)
    {
        if (animated)
        {
            // Alternative way with different set of trannsition
            /*                UIView.Animate(0.75, () =>
            {
                UIView.SetAnimationCurve(UIViewAnimationCurve.EaseInOut);
                UIView.SetAnimationTransition(UIViewAnimationTransition.CurlDown, this.View, false);
            });
            */
            var transition = CATransition.CreateAnimation();
            transition.Duration = 0.75;
            transition.Type = CAAnimation.TransitionFromTop;
            View.Layer.AddAnimation(transition, null);
            return base.PopViewController(false);
        }
        else
        {
            return base.PopViewController(false);
        }
    }
}

https://gist.github.com/alexlau811/e12a8c126e6e082a5017