currentPlaybackTime和MPMusicPlayerController和iOS 7.1的问题 [英] Problems with currentPlaybackTime and MPMusicPlayerController and iOS 7.1

问题描述

在iOS 7.1中使用MPMusicPlayerController设置currentPlaybackTime时出现问题. 我曾经能够简单地执行以下操作:

Having problems setting currentPlaybackTime with MPMusicPlayerController in iOS 7.1. I used to be able to simply do the following:

MPMusicPlayerController *iPodController =
[MPMusicPlayerController applicationMusicPlayer]; 
iPodController.currentPlaybackTime = 30.0;
[iPodController play];

音乐播放器将搜索30秒然后播放.

And the music player would seek to 30 seconds in and play.

从iOS 7.1开始，情况并非如此.

As of iOS 7.1 this is not the case.

如果我执行以下操作:

[iPodController play];
iPodController.currentPlaybackTime = 30.0;

然后它可能"跳入或跳出30秒.非常不一致.

Then it "may" jump 30 secs in or not. Very inconsistent.

此功能以前可用于所有以前的iOS版本.有办法解决这个问题吗?

This used to work for all previous iOS versions. Is there a way to fix this?

推荐答案

我发现我无法在播放给定歌曲之前设置currentPlaybackTime.

I find that I can't set currentPlaybackTime before playing a given song.

使用您的第一个片段:

iPodController.currentPlaybackTime = 30.0;
[iPodController play];

设置currentPlaybackTime属性不会执行任何操作，因此无法找到所需的播放时间.但到目前为止，使用iOS 7.1进行呼叫的另一种方法对我来说一直有效:

setting the currentPlaybackTime property does nothing and I can't seek to the desired playback time. But making the calls the other way around have worked consistently for me with iOS 7.1 so far:

[iPodController play];
iPodController.currentPlaybackTime = 30.0;

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