I'm using the Xamarin.Facebook.Android package for this. The dialog displays correctly and the requests go through to the correct recipients but the callbacks never get called. I'm not 100% sure where I'm supposed to get the CallbackManager from.
public class FacebookService : IFacebookService { public void InviteFriends(FacebookInviteCallbacks facebookInviteCallbacks) { if (AppInviteDialog.CanShow()) { var activity = Xamarin.Forms.Forms.Context as Activity; var content = new GameRequestContent.Builder(). SetTitle("Check out this game"). SetMessage("Check out this game I play!"). Build() as GameRequestContent; var dialog = new GameRequestDialog(activity); dialog.RegisterCallback(CallbackManagerFactory.Create(), new MyFacebookCallback(facebookInviteCallbacks)); dialog.Show(content); } } } public class MyFacebookCallback : Java.Lang.Object, IFacebookCallback { private FacebookInviteCallbacks facebookInviteCallbacks; public ImcFacebookCallback(FacebookInviteCallbacks facebookInviteCallbacks) { this.facebookInviteCallbacks = facebookInviteCallbacks; } public void OnCancel() { System.Diagnostics.Debug.WriteLine("Cancelled sending invite"); } public void OnError(FacebookException error) { facebookInviteCallbacks.FailedCallback(error.Message); } public void OnSuccess(Java.Lang.Object result) { System.Diagnostics.Debug.WriteLine(result); } } Update
From what I can tell from other examples I've seen, CallbackManagerFactory.Create() is correct.
1 Answers
Answers 1
After a lot of digging and trial and error I finally got this working.
In my FacebookService class I added:
public static ICallbackManager callbackManager; In the Invitefriends method, in the if statement I changed this:
dialog.RegisterCallback(CallbackManagerFactory.Create(), new MyFacebookCallback(facebookInviteCallbacks)); to
callbackManager = CallbackManagerFactory.Create(); dialog.RegisterCallback(callbackManager, new ImcFacebookCallback(facebookInviteCallbacks)); In the MainActivity I added the following override.
protected override void OnActivityResult(int requestCode, Result resultCode, Intent data) { base.OnActivityResult(requestCode, resultCode, data); Services.FacebookService.callbackManager.OnActivityResult(requestCode, (int)resultCode, data); } That's all it took. I wish the package would have been better documented.
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