iOS 13 GM 中的文本转语音 API (AVSpeechSynthesisVoice) 被破坏

Question

更新

我在另一台设备上安装了 iOS 13 GM，没有遇到此问题。所以我不再确定这是否是 iOS 13 GM 特有的，或者是我安装它的方式的问题。在第一台设备（iPhone X）上，我进行了升级（通过 iTunes 中的“选项键 + 检查更新按钮”）。在第二台设备（iPhone SE）上，我进行了完整恢复。尚不确定是什么导致它进入这种状态。

原始问题

AVSpeechSynthesisVoice.speechVoices()报告称，当我在装有 iOS 13 GM 的设备上运行它时，没有可用的语音。事实上，当我尝试使用AVSpeechSynthesisVoice(identifier:)它加载语音时，它总是返回零。它在模拟器中工作。我不认为这是以前的测试版的问题，而且它似乎适用于 iOS 13.1 beta 2 和 3。

有没有人遇到过这种情况，并想出任何解决方法？我没有看到任何有意更改此行为的文档，因此我怀疑这是一个错误。我打算提交雷达。但这对于即将发布的 iOS 13 来说并没有什么帮助。

在新创建的单视图项目中可以重现此行为，并将以下简单viewDidLoad功能添加到包含的视图控制器中。

override func viewDidLoad() {
    super.viewDidLoad()

    let voices = AVSpeechSynthesisVoice.speechVoices()
    print("Voice Count: \(voices.count)")
}

输出很长：

2019-09-11 10:43:09.370992-0400 SpeechTest[1617:412065] Creating client/daemon connection: C591307C-313E-4B5F-91A8-184B7E662819
2019-09-11 10:43:09.396250-0400 SpeechTest[1617:412065] Got the query meta data reply for: com.apple.MobileAsset.MacinTalkVoiceAssets, response: 0
2019-09-11 10:43:09.397519-0400 SpeechTest[1617:412065] Consumed extension
2019-09-11 10:43:09.401982-0400 SpeechTest[1617:412065] Got the query meta data reply for: com.apple.MobileAsset.MacinTalkVoiceAssets, response: 0
Voice Count: 0
2019-09-11 10:43:09.435890-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.445269-0400 SpeechTest[1617:412066] Consumed extension
2019-09-11 10:43:09.468849-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.499573-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.520244-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.GryphonVoice, response: 0
2019-09-11 10:43:09.545243-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.CustomVoice, response: 0
2019-09-11 10:43:09.549941-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.CombinedVocalizerVoices, response: 2
2019-09-11 10:43:09.550075-0400 SpeechTest[1617:412066] [AXTTSCommon] Error running custom voice query XML not present
2019-09-11 10:43:09.569114-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.599459-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.630763-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServicesVocalizerVoice, response: 0
2019-09-11 10:43:09.650161-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.GryphonVoice, response: 0
2019-09-11 10:43:09.666885-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.CustomVoice, response: 0
2019-09-11 10:43:09.671279-0400 SpeechTest[1617:412066] Got the query meta data reply for: com.apple.MobileAsset.VoiceServices.CombinedVocalizerVoices, response: 2
2019-09-11 10:43:09.671412-0400 SpeechTest[1617:412066] [AXTTSCommon] Error running custom voice query XML not present
...

它重复最后 7 行 39 次，大概对应于它应该知道的 39 个声音。

Answer 1

我遇到了同样的 AVSpeechUtterance 问题，随着时间的推移，它似乎已经在我的设备上自行解决。使用之前崩溃过的应用程序一段时间后，或者全新安装后，我不再在 iOS 13 或 13.1 上崩溃。