Added verbose UiAutomator message to sample-ui-toggle-buttons.py

Author: dtmilano

AndroidViewClient/examples/sample-ui-toggle-buttons.py

@@ -28,6 +28,8 @@
 from com.dtmilano.android.viewclient import ViewClient, ViewNotFoundException
 
 vc = ViewClient(*ViewClient.connectToDeviceOrExit())
+if vc.useUiAutomator:
+    print "ViewClient: using UiAutomator backend"
 
 # Find the 3 toggle buttons, because the first 2 change their text if they are selected
 # we use a regex to find them.