我可以隐藏iOS锁屏音乐控件中的倒带按钮吗？ [英] Can I hide the rewind button in the iOS Lock Screen Music controls?

问题描述

我的应用程序不支持返回上一首曲目，我想知道是否可以告诉锁屏音乐控件隐藏其倒带/上一曲目按钮。我使用 MPNowPlayingInfoCenter 将该信息传达给锁定屏幕。

My app doesn’t support going back to previous tracks, and I’m wondering if I can tell the lock screen music controls to hide their rewind/previous track button. I use the MPNowPlayingInfoCenter to communicate that information to the lock screen.

非常简单的问题，可以做到吗？例如，仅显示播放/暂停和向前跳过？

Pretty simple question, can it be done? For instance, to only show Play/Pause, and Skip Forward?

推荐答案

从iOS 7.1开始，有一种方法可以自定义锁定屏幕和命令中心（以及可能还有许多其他附件）中可用的控件： MPRemoteCommandCenter 。

As of iOS 7.1 there is a way to customize the controls available in the lock screen and command center (and probably many other accessories): MPRemoteCommandCenter.

关于您的问题您可以执行以下操作：

Regarding your question you can do the following:

[MPRemoteCommandCenter sharedCommandCenter].previousTrackCommand.enabled = NO;
[MPRemoteCommandCenter sharedCommandCenter].skipBackwardCommand.enabled = NO;
[MPRemoteCommandCenter sharedCommandCenter].seekBackwardCommand.enabled = NO;

// You must also register for any other command in order to take control
// of the command center, or else disabling other commands does not work.
// For example:
[MPRemoteCommandCenter sharedCommandCenter].playCommand.enabled = YES;
[[MPRemoteCommandCenter sharedCommandCenter].playCommand addTarget:self action:@selector(play)];

请参阅此Stack Overflow答案，了解有关MPRemoteCommandCenter的更多一般信息。

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