是否可以使用完成块推送View Controller？ [英] Is it possible to push a View Controller with a completion block?

问题描述

UINavigationController的文档不包含 pushViewController 方法，其中完成：参数。

UINavigationController's documentation contains no pushViewController methods with a completion: parameter.

推荐答案

我会选择@ justMartin的回答。但下面是另一种方法。

I would go with @justMartin's answer . But below is another approach.

推动动画需要0.3秒。所以，如果你想在完成后在这里运行一些函数，请在0.3秒的延迟后使用performSelector。

push animation take 0.3 seconds.So, if you want to run some function here after completion use performSelector after 0.3 seconds of delay.

[self performSelector:@selector(completedPushing:) withObject:nil afterDelay:.3];

OR

推送<$ c后$ c> new viewController 到导航堆栈，从视图中删除旧viewController视图 hierarchy.so这会导致在旧的ViewController上调用 viewDidDisappear 。您可以在那里编写完成代码。不要忘记在viewDidDisappear的某个实施点上调用 super 。

OR
After pushing the new viewController onto navigation stack,the old viewController view is removed from view hierarchy.so this results in call of viewDidDisappear on old ViewController.You can write your completion code there. don't forget to call super at some point of implementation of viewDidDisappear.

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