How to push a JSQMessagesViewController correctly - ios

Question

I have a Swift project and am trying to use JSQMessagesViewController within it. I have used cocoapods to install the framework and am importing it using a swift import statement.
import JSQMessagesViewController
Up to this point there are no errors and everything compiles without warning. However when I try to push a new instance onto a navigation controller the app crashes.
func openConversation(userId: Int) {
let messageViewController = JSQMessagesViewController();
self.navigationController?.pushViewController(messageViewController, animated: true)
}
The second line of the method causes the crash and the error message is.
2015-08-03 21:44:17.229 [4856:64097] *** Assertion failure in -[JSQMessagesViewController viewWillAppear:], /[my file path]/Pods/JSQMessagesViewController/JSQMessagesViewController/Controllers/JSQMessagesViewController.m:223
2015-08-03 21:44:17.232 [4856:64097] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: self.senderId != nil'
*** First throw call stack:
(
0 CoreFoundation 0x00000001067e3c65 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000108590bb7 objc_exception_throw + 45
2 CoreFoundation 0x00000001067e3aca +[NSException raise:format:arguments:] + 106
3 Foundation 0x0000000106ec298f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195
4 JSQMessagesViewController 0x00000001060e9055 -[JSQMessagesViewController viewWillAppear:] + 277
5 UIKit 0x00000001073f8f61 -[UIViewController _setViewAppearState:isAnimating:] + 487
6 UIKit 0x000000010741a355 -[UINavigationController _startCustomTransition:] + 887
7 UIKit 0x000000010742637f -[UINavigationController _startDeferredTransitionIfNeeded:] + 386
8 UIKit 0x0000000107426ece -[UINavigationController __viewWillLayoutSubviews] + 43
9 UIKit 0x00000001075716d5 -[UILayoutContainerView layoutSubviews] + 202
10 UIKit 0x00000001073449eb -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 536
11 QuartzCore 0x0000000108f5ded2 -[CALayer layoutSublayers] + 146
12 QuartzCore 0x0000000108f526e6 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380
13 QuartzCore 0x0000000108f52556 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
14 QuartzCore 0x0000000108ebe86e _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 242
15 QuartzCore 0x0000000108ebfa22 _ZN2CA11Transaction6commitEv + 462
16 QuartzCore 0x0000000108ec00d3 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
17 CoreFoundation 0x0000000106716ca7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
18 CoreFoundation 0x0000000106716c00 __CFRunLoopDoObservers + 368
19 CoreFoundation 0x000000010670ca33 __CFRunLoopRun + 1123
20 CoreFoundation 0x000000010670c366 CFRunLoopRunSpecific + 470
21 GraphicsServices 0x000000010b148a3e GSEventRunModal + 161
22 UIKit 0x00000001072c48c0 UIApplicationMain + 1282
23 Startana 0x0000000105fa2807 main + 135
24 libdyld.dylib 0x0000000109306145 start + 1
25 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
After searching online I cant seem to find any information about what causes this issue.

Answer 1

I’m glad to hear it solved your issue!
The JSQMessagesViewController have two asset parameters, the senderId and the senderDisplayName.
So you must set your senderId and display name.

Answer 2

In your current controller which is inherited by JSQMessagesViewController
you will need to do couple of things first add setup function
func setup() {
self.senderId = "1234"
self.senderDisplayName = "TEST"
}
and latter invoke that function from
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.setup()
}