[英]“try AVAudioSession.sharedInstance().setCategory” returns nil on only device
try AVAudioSession.sharedInstance()
.setCategory(AVAudioSessionCategoryPlayback,
with: AVAudioSessionCategoryOptions(rawValue: UInt(UInt8(AVAudioSessionCategoryOptions.defaultToSpeaker.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowAirPlay.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowBluetooth.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowBluetoothA2DP.rawValue))))
返回錯誤:
Domain = NSOSStatusErrorDomain Code = -50“(null)”
對於今后發現這一點的人來說,這就是解決方案。 它只適用於設備,如果您將AVAudioSessionCategoryPlayback
更改為AVAudioSessionCategoryPlayAndRecord
如下所示:
try AVAudioSession.sharedInstance()
.setCategory(AVAudioSessionCategoryPlayAndRecord,
with: AVAudioSessionCategoryOptions(rawValue: UInt(UInt8(AVAudioSessionCategoryOptions.defaultToSpeaker.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowAirPlay.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowBluetooth.rawValue)
| UInt8(AVAudioSessionCategoryOptions.allowBluetoothA2DP.rawValue))))
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