Invalid parameter not satisfying: messageSenderId != nil - ios

Question

I integrated 'XBChatModule' Library from Cocoapods into my project.
When I run the code for the first time, It crashed the app by throwing following error -[XBMessage messageHash]: unrecognized selector sent to instance and it got resolved by changing XBMessage.m file as below
XBMessage.m
- (NSUInteger)messageHash
{
return self.hash;
}
But this produces new issue saying
Assertion failure in -[ChatMessagesController collectionView:cellForItemAtIndexPath:], /Users/Neelacharya/Harshit/LIve Projects/Project/V1/Source/Project/Pods/JSQMessagesViewController/JSQMessagesViewController/Controllers/JSQMessagesViewController.m:452
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: messageSenderId != nil'
*** First throw call stack:
(
0 CoreFoundation 0x000000011161ca75 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x00000001112b1bb7 objc_exception_throw + 45
2 CoreFoundation 0x000000011161c8da +[NSException raise:format:arguments:] + 106
3 Foundation 0x000000010edcfb6f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
4 CinchGaming 0x000000010d7be3c5 -[JSQMessagesViewController collectionView:cellForItemAtIndexPath:] + 693
5 CinchGaming 0x000000010d7f5f6d -[XBMessageViewController collectionView:cellForItemAtIndexPath:] + 141
6 UIKit 0x00000001102b9fab -[UICollectionView _createPreparedCellForItemAtIndexPath:withLayoutAttributes:applyAttributes:] + 244
7 UIKit 0x00000001102bb6e4 -[UICollectionView _updateVisibleCellsNow:] + 3445
8 UIKit 0x00000001102bf391 -[UICollectionView layoutSubviews] + 243
9 UIKit 0x000000010fd041c3 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 521
10 QuartzCore 0x000000010f9d2c58 -[CALayer layoutSublayers] + 150
11 QuartzCore 0x000000010f9c787e _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
12 QuartzCore 0x000000010f9c76ee _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
13 QuartzCore 0x000000010f93536e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
14 QuartzCore 0x000000010f936482 _ZN2CA11Transaction6commitEv + 390
15 QuartzCore 0x000000010f936aed _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
16 CoreFoundation 0x0000000111551507 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
17 CoreFoundation 0x0000000111551460 __CFRunLoopDoObservers + 368
18 CoreFoundation 0x0000000111547293 __CFRunLoopRun + 1123
19 CoreFoundation 0x0000000111546bc6 CFRunLoopRunSpecific + 470
20 GraphicsServices 0x0000000112796a58 GSEventRunModal + 161
21 UIKit 0x000000010fc8a580 UIApplicationMain + 1282
22 CinchGaming 0x000000010d67e463 main + 115
23 libdyld.dylib 0x0000000111b4e145 start + 1
24 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
I understand the reason of crash is the member messageSenderId is nil at 452'th line of JSQMessagesViewController.m file. But I don't know why does it occur and how to get it resolved.
I also reported as issue to the authors at Github, but couldn't get response.
I would appreciate if you can help me to solve the problem.

Answer 1

It think the application is crashing on this line:
NSString *messageSenderId = [messageItem senderId];
NSParameterAssert(messageSenderId != nil);
When I dig into that I found that the senderIdis being set from XBMessageViewController's loadDataToTable method. The only reason I can find the value for senderId is nil is you aren't setting the values for jidStr and senderId.
You will require to set jidStr and senderId and XBMessageViewController, where jidStr is receiver and senderId is self user.
Hope this helps.

Answer 2

You need to register your class like [self.collectionView registerClass:[UICollectionViewCell class] forCellWithReuseIdentifier:#"Cell"];