async void RequestAccessToPhotoLibrary()
{
switch (PHPhotoLibrary.AuthorizationStatus)
{
case PHAuthorizationStatus.NotDetermined:
await PHPhotoLibrary.RequestAuthorizationAsync();
GetPhotos();
break;
case PHAuthorizationStatus.Authorized:
break;
default:
UIAlertHelper.ShowMessage("Cannot access to Photo Library!",
"Please, check in Settings app that you have permission to access to Photos.",
NavigationController,
"Ok",
null,
null,
null,
new [] { "Go to settings" },
new Action[] { OpenSettings });
break;
}
}
// Sign in Anonymously
void SignInAnonymouslyCompleted(AuthDataResult authData, NSError error)
{
if (error == null)
{
AppDelegate.UserUid = authData.User.Uid;
// Points to https://MyDatabaseId.firebaseio.com/users
userNode = AppDelegate.RootNode.GetChild("users").GetChild(AppDelegate.UserUid);
VerifyIfUserExists();
}
else
{
AuthErrorCode errorCode;
if (IntPtr.Size == 8) // 64 bits devices
{
errorCode = (AuthErrorCode)((long)error.Code);
}
else // 32 bits devices
{
errorCode = (AuthErrorCode)((int)error.Code);
}
var title = "Anonymous sign-in failed!";
// Posible error codes that SignInAnonymously method could throw
// Visit https://firebase.google.com/docs/auth/ios/errors for more information
switch (errorCode)
{
case AuthErrorCode.OperationNotAllowed:
UIAlertHelper.ShowMessage(title,
"The app uses Anonymous sign-in to work correctly and seems to be disabled…\n" +
"Please, go to Firebase console and enable Anonymous login.\n" +
"Open «Application Output» in Xamarin Studio for more information.",
NavigationController,
"Ok, let me enable it!");
Console.WriteLine("Anonymous sign-in seems to be disabled. Please, visit the following link to know how " +
"to enable it: https://firebase.google.com/docs/auth/ios/anonymous-auth#before-you-begin");
break;
case AuthErrorCode.NetworkError:
UIAlertHelper.ShowMessage(title,
"The sample needs internet to create an Anonymous user.",
NavigationController,
"Ok");
break;
default:
UIAlertHelper.ShowMessage(title,
"An unknown error has ocurred…",
NavigationController,
"Ok");
break;
}
indicatorView.StopAnimating();
}
}