private async void _facebookButton_Clicked(object sender, EventArgs e)
{
DisableControls();
try {
IFacebookButton facebook = DependencyService.Get <IFacebookButton> ();
facebook.LoginWithReadPermissions(new string[] { "email" }, async(d) => {
if (d == null)
{
EnableControls();
DisplayAlert(AppConfig.ApplicationName, "Facebook acount was not linked", "OK");
return;
}
await _parseService.LoginWithFacebook(d.UserId, d.AccessToken, d.TokenExpiration, s => FacebookLoginCallback(s));
});
} catch (Exception ex) {
string er = ex.Message;
}
}