MPMoviePlayerController-加载电影时捕获网络错误 [英] MPMoviePlayerController - catching network errors when loading a movie

问题描述

有没有一种捕获异常的方法(尤其是对于网络错误) /没有可用的连接)在使用MPMoviePlayerController时?

Is there a way of catching exceptions (particularly for network errors / no connection available) when using a MPMoviePlayerController?

我特别担心的是，一旦使用initWithURL:初始化了播放器实例，您就无法知道影片加载是否由于某种原因而失败.

I am particularly concerned that once an instance of the player is initialised with initWithURL: you have no way of knowing whether the movie load has failed for some reason.

我已经查看了可用的文档，意识到可以得到一份 通过

I have reviewed the available documentation and realise I can get a notification for loadState changes through

moviePlayerLoadStateChanged:(NSNotification*)notification.

问题是可用的loadState常量不能满足错误处理的要求:

Problem is the loadState constants available don't cater for error handling:

MPMovieLoadStateUnknown
MPMovieLoadStatePlayable
MPMovieLoadStatePlaythroughOK
MPMovieLoadStateStalled

(如果您想知道，MPMovieLoadStateStalled出于某种原因在网络错误期间不会被调用?)

(in case you are wondering, MPMovieLoadStateStalled this doesn't get called during network errors for some reason?)

有一个已弃用的MPMoviePlayerContentPreloadDidFinishNotification，它为userInfo词典提供了错误"键，但对于iOS 3.2及更高版本则不提供任何功能.

There's a deprecated MPMoviePlayerContentPreloadDidFinishNotification that provides a userInfo dictionary with an "error" key but nothing for iOS 3.2 and above.

任何帮助将不胜感激.

推荐答案

最后，我通过订阅MPMoviePlayerPlaybackDidFinishNotification并观察MPMovieFinishReasonPlaybackError来进行排序.

In the end I got this sorted by subscribing to MPMoviePlayerPlaybackDidFinishNotification and watching for MPMovieFinishReasonPlaybackError.

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