public async void Speak(string text, CrossLocale?crossLocale = null, float?pitch = null, float?speakRate = null, float?volume = null, CancellationToken cancelToken = default(CancellationToken))
{
if (TextToSpeech != null)
{
if (crossLocale == null)
{
var localeList = (await TextToSpeech.GetInstalledLanguages())?.ToArray();
if (localeList != null)
{
crossLocale = localeList.FirstOrDefault(o => o.DisplayName.Contains("zh-CN"));
}
}
TextToSpeech.Speak(text, crossLocale, pitch, speakRate, volume, cancelToken).Forget();
}
}
