带有延迟的Poptorootviewcontroller [英] Poptorootviewcontroller with delay

问题描述

我有一个执行poptorootviewcontroller的方法 test。我想在poptorootviewcontroller的动画之前添加一些延迟。这是我的代码：

I have a method "test" that execute poptorootviewcontroller. I want to put some delay before the animation of poptorootviewcontroller. Here is my code :

-(void)test{
[UIView animateWithDuration:5.0
                      delay: 2.5
                    options: UIViewAnimationOptionCurveEaseIn
                 animations:^{
                     [self.navigationController popToRootViewControllerAnimated:NO];
                 }
                 completion:nil];
}

但这是行不通的。
有什么帮助吗？谢谢！

But it doesn't work. Any help? Thanks!

推荐答案

您发布的代码用于执行动画，而不是延迟。

The code you posted is for performing an animation, not delaying.

一个好的解决方案是使用 dispatch_after ：

A good solution would be to use dispatch_after:

-(void)test{
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self.navigationController popToRootViewControllerAnimated:NO];
    });

以任意延迟替换 2.5

这篇关于带有延迟的Poptorootviewcontroller的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！