Xamarin Froms pan gesture recognizer demo.
/* The perpouse of this app is to help me undersand Pan
* Gestures in Xamarin forms. There seams to be some inconsistancies between iOS and Android.
* Questions:
* The swipe left feature works for iOS, but not Android. The OnUpdated event does not fire on android.
* Why doesn't iOS and Android implement the the pan gesture the same?
* (Note: It does work on android of the view has no child elements.
* Try changing the _rightContent from a webview to a boxview and it will work almost as expected.)
*
* The pan gesture doesn't work at all for webviews. This is the case for iOS and Android.
* Why can’t I attach a pan gesture recognizer to a webview?
*/