ios - iOS 锁定屏幕中的播客 "skip"按钮

Question

我有一个音频应用程序可以在 iOS 设备上播放背景音频。我需要让应用程序具有“跳过 15”按钮(就像 Apple 播客应用程序和 Overcast)而不是下一首/上一首轨道按钮。有谁知道这方面的文档或一些示例在哪里？这对 Google 来说是一个棘手的问题。

Answer 1

更新:在 https://stackoverflow.com/a/24818340/1469259 上对 iOS 7.1 及更高版本这个问题的很好回答.

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锁定屏幕上的按钮触发“远程控制”事件。您可以根据需要处理这些事件并向前/向后跳过:

- (void)viewDidAppear:(BOOL)animated {
    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
    if ([self canBecomeFirstResponder]) {
        [self becomeFirstResponder];
    }
}

- (void)remoteControlReceivedWithEvent:(UIEvent *)receivedEvent {
     if (receivedEvent.type == UIEventTypeRemoteControl) {
        switch (receivedEvent.subtype) {
            case UIEventSubtypeRemoteControlTogglePlayPause:
                // add code here to play/pause audio
                break;

            case UIEventSubtypeRemoteControlPreviousTrack:
                // add code here to skip back 15 seconds
                break;

            case UIEventSubtypeRemoteControlNextTrack:
                // add code here to skip forward 15 seconds
                break;

            default:
                break;
        }
    }
}

实际跳过的方式取决于您播放音频的方式。

文档在这里 https://developer.apple.com/library/ios/documentation/EventHandling/Conceptual/EventHandlingiPhoneOS/Remote-ControlEvents/Remote-ControlEvents.html

实现此目标的另一种可能方法是 MPSkipIntervalCommand https://developer.apple.com/library/ios/documentation/MediaPlayer/Reference/MPSkipIntervalCommand_Ref/index.html