Can't send in OnDestroy or OnApplicationQuit?

Hello again,

I can't seem to send any events in OnDestry or OnApplicationQuit handlers. For example, this doesn't work:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Cloud.Analytics;
3. using System.Collections.Generic;
4.  
5. public class UnityAnalyticsIntegration : MonoBehaviour {
6.     public static UnityAnalyticsIntegration instance = null;
7.     private const string projectId = "SECRET";
8.    
9.     void Start () {
10.         if (instance == null) {
11.             instance = this;
12.  
13.             UnityAnalytics.StartSDK (projectId);
14.         }
15.     }
16.  
17.     void OnApplicationQuit() {
18.         float avgFPS = Time.frameCount / Time.realtimeSinceStartup;
19.  
20.         UnityAnalytics.CustomEvent("Session Performance", new Dictionary<string, object> {
21.             {"Version", SettingsHelper.version},
22.             {"Average FPS", avgFPS},
23.             {"Session Duration", Time.realtimeSinceStartup/60f}
24.         });
25.     }
26. }

However, if I put the same code all in Start then it does send.

Is there a list of handlers that we can and cannot use?

 

I would like to know that as well. Is it possible to log analytics events on exit? It's feasible to work around it by storing the information in PlayerPrefs and then raising the event in the next session, but that's way less than ideal.

 

Yeah, that's how I am doing it now but storing it in a separate file. Unfortunately, since my project is in such an early stage I expect people to only play once to see what changed then discard my game, making it somewhat difficult to gather that data. I'll try tying the event send to the exit button push next to see if I can resolve the issue that way but I would still like to see my question answered, about the handlers.

 

A solution to this would be great - I've just hit exactly the same problem.
Obviously I don't know how the internals work, but having set the logging level to Info for the analytics I can see responding to OnApplicationQuit before my MonoBehaviours - could this not be changed to it responds last, after all custom behaviours have handled this event?

 

I've found a temporary, imperfect workaround. If you are closing the game using "Application.Quit ()" you can send the event first and Unity Analytics will catch it. Unfortunately it's not going to work if the user closes the game any other way (eg: Alt+F4, clicking the X, ending the task), but it's better than nothing.

 

@Alex2539, I thought of this method too, but in my case the event is not send. The AnalyticsResult is "Ok" but the app shuts down to quickly. The next time I open my app the event will be sent.
When will the Analytics.CustomEvent EXACTLY be send? Due to the issues it is not send immediately.

 

Any news about that? If not, how should we send session stats when player exits that game?

 

Hi @Maverick,

This is on our list but I cannot give you any real information on when this might possibly be added. What kind of game are you developing? What stats are you trying to track? Would it be possible to send an event with session stats after some condition has been met in your game?

 

In my current case we need overall stats about fps, memory, session time and other few params that are collected during game session.

For now I'm sending this info each minute, but this is not really convenient.
Is there a way to "Update" a custom event data?

 

Hi @Maverick,

Currently there is no way to 'Update' a custom event but I think it is a great idea for a feature. If you want to show your support for this idea you can add/vote for it to be added as a feature here, http://feedback.unity3d.com/forums/unity/suggestions?utf8=✓&status=0&category=analytics&view=hottest

The best suggestion I can think of would be to create several Custom Events at different key parts of your game that send this data. Like at level completed, power-up acquired, etc. I hope this helps!

 

Is this issue fixed or any one found any proper workarround?
Any help

 

AFAIK this has not been fixed but I'm also not sure it is a bug.

Just put the code to send he metrics in the even handler for whatever UI element (or key press) the user is using to exit your game.

 

I have added my event sending code in OnApplicationQuit and OnApplicationPause. I printed the result.
In case of OnApplicationPause result says "Not initialized".
In case of exit event is sent some time and some time not. I think event is sent when "Application.Quit" is called explicitly(on the user input to exit game through normal flow) and its not sent when user Force stop the game or remove from running apps or its stopped due to a crash.

 

Hi @umar43,

Because of the nature of OnApplicationPause Analytics is 'shutdown' during this call which is why you are receiving 'Not Initialized', this is the expected behaviour. Placing events in OnApplicationQuit has a similar issue but the difference is that events in this function will have an attempt made to be sent but very frequently the app will close before the event can be sent. This is why you are only sometimes receiving your events.

 

@mpinol

What can I do to make sure that events in OnApplicationQuit will be logged every time.

 

You might be able to use CancelQuit to cancel the application's quit, send the events, then quit the application: http://docs.unity3d.com/ScriptReference/Application.CancelQuit.html

 

Hi @umar43,

As of right now there is no way to make sure that events are sent reliably from OnApplicationQuit. This is something we are aware would be extremely useful to developers and we are researching ways to make this a reality. tbg10101_'s suggestion might be of some help, but I have not tested it myself so I cannot say for sure and I do not believe it will work on iPhone devices.

 

Hi @mpinol

Any news on this?

 

Hey @xavier.heimgartner,

This is something we are looking into but I am sorry I cannot really give you a time frame of when it will become available. Just to get an idea of your use case, are you looking to send a Custom Event with parameters or would a generic 'user quit app' type of event be useful as well?

 

See my original post for the particulars of my original event.

 

@mpinol
Thanks for the answer!
I would like to send a Custom Event when a users unexpectedly quits my game.
This would would give me some insight into when and why they leave etc.

 

What I do in Seashine is saving the data I want to keep an eye on in PlayerPrefs OnApplicationQuit(). I then load them and send them to Unity Analytics the next time the user starts or resume the app.

Not perfect since you get the info only if and when the player launches the game again but at least it does the job. The "CancelQuit" alternative doesn't work on iOS anyway.

I hope you guys at Unity still plan to implement a way to make it work.

 

@minpol Still no fix for this?

 

@ap-unity Any updates for supporting this feature?