Xamarin.Forms Accessing native features with DependencyService
Remarks
If you do not want your code to break when no implementation is found, check the DependencyService first if it has a implementation available.
You can do this by a simple check if it is not null.
var speaker = DependencyService.Get<ITextToSpeech>();
if (speaker != null)
{
speaker.Speak("Ready for action!");
}
or, if your IDE supports C# 6, with null-conditional operator:
var speaker = DependencyService.Get<ITextToSpeech>();
speaker?.Speak("Ready for action!");
If you don't do this and no implementation is found at runtime, your code will generate an exception.
