Starts an activity that will prompt the user for speech, send it through a speech recognizer, and either display a web search result or trigger another type of action based on the user's speech.
If you want to avoid triggering any type of action besides web search, you can use the RecognizerIntent.ExtraWebSearchOnly extra.
Required extras:
Optional extras:
Result extras (returned in the result, not to be specified in the request):
NOTE: There may not be any applications installed to handle this action, so you should make sure to catch Android.Content.ActivityNotFoundException.