QMChatCollectionView crashes at performBatchUpdates

[kevb10]

Using:
QMCVDevelopment 0.3.3 (was 0.3.3)
QMServicesDevelopment 0.3.5 (was 0.3.4)
QuickBlox 2.6.3 (was 2.6.2)

I can start a conversation thread and get out of there but if I go back in, it throws an error in the QMChatViewController.m file line 271:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of sections. The number of sections contained in the collection view after the update (1) must be equal to the number of sections contained in the collection view before the update (1), plus or minus the number of sections inserted or deleted (1 inserted, 0 deleted).' ***
And I pretty much followed your demo code. (http://quickblox.com/developers/SimpleSample-chat_users-ios#How_to_start)

[Raikerian]

Hi,

Are you unsubscribing from QBChat delegate when leaving chat controller?

[kevb10]

Yes I do believe so here is the gist
https://gist.github.com/kevb10/14ba2b37e924c0e925c1#file-chatviewcontroller-m-L209-L222

[Raikerian]

Can you send me a test/sample project with this crash being reproducible?

[kevb10]

Go ahead and clone https://github.com/kevb10/KevChatDemo
(using cocoapods)

[Raikerian]

You are trying to perform animation before view did appear.

Just replace in viewWillAppear:

// Retrieving messages
    if ([[self storedMessages] count] > 0 && self.totalMessagesCount == 0) {

        [self insertMessagesToTheBottomAnimated:[self storedMessages]];
        [self refreshMessagesShowingProgress:NO];
    }

with

// Retrieving messages
    if ([[self storedMessages] count] > 0 && self.totalMessagesCount == 0) {

        [self updateDataSourceWithMessages:[self storedMessages]];
        [self refreshMessagesShowingProgress:NO];
    }

[kevb10]

Awesome. That solved the problem. 👍