访问 Apple Watch 的麦克风 [英] Access Apple Watch's microphone

问题描述

现在关于 Apple Watch 的文档越来越多，有没有人找到访问和使用设备麦克风的方法?

Now that more and more documentation on the Apple Watch is surfacing has anybody found a way to access and use the device's microphone?

推荐答案

您可以在 watchOS 2 上访问  Watch 的麦克风.

You can access the  Watch's microphone on watchOS 2.

1) 创建一个文件 URL，用于存储记录的输出.

NSArray *filePaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
                                                         NSUserDomainMask,YES);
NSString *path = [[filePaths firstObject] stringByAppendingPathComponent:@"rec.m4a"];
NSURL *fileUrl = [NSURL fileURLWithPath:path];

您可以指定扩展名 .wav、.mp4 和 .m4a.

You may specify the extensions .wav, .mp4, and .m4a.

2) 调用方法如下:

[self presentAudioRecordingControllerWithOutputURL:fileUrl
                                            preset:WKAudioRecordingPresetWideBandSpeech
                                   maximumDuration:5.0
                                       actionTitle:@"Some Title"
                                        completion:^(BOOL didSave, NSError * __nullable error) {

                                            NSLog(@"didSave:%d, error:%@", didSave, error);
                                        }];

除了上述之外，您还可以选择预设

You can choose preset in addition to the above

• WKAudioRecordingPresetNarrowBandSpeech
• WKAudioRecordingPresetHighQualityAudio

在 Swift 中:

self.presentAudioRecordingControllerWithOutputURL(
    self.recFileURL(),
    preset: WKAudioRecordingPreset.WideBandSpeech,
    maximumDuration: 5.0,
    actionTitle: "SomeTitle") { (didSave, error) -> Void in

        print("didSave:\(didSave), error:\(error)")
}

您可以按如下方式播放录制的文件:

You can play the recorded file as follows:

self.presentMediaPlayerControllerWithURL(
    fileURL,
    options: nil) { (didPlayToEnd, endTime, error) -> Void in

        print("didPlayToEnd:\(didPlayToEnd), endTime:\(endTime), error:\(error)")
}

您可以查看详细规范此处.

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