我有一个 Swift 项目，并尝试在其中使用 JSQMessagesViewController 。我已经使用 cocoapods 来安装框架，并使用 swift import 语句导入它。
import JSQMessagesViewController
到目前为止，没有任何错误，所有内容都可以在没有警告的情况下编译。但是，当我尝试将新实例推送到导航控制器时，应用程序崩溃了。
func openConversation(userId: Int) {
let messageViewController = JSQMessagesViewController();
self.navigationController?.pushViewController(messageViewController, animated: true)
}
该方法的第二行导致崩溃，错误消息是。
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
在网上搜索后，我似乎找不到任何有关导致此问题的原因的信息。
我很高兴听到它解决了您的问题！
The JSQMessagesViewController有两个资产参数，senderId和senderDisplayName。
因此，您必须设置您的 senderId 和显示名称。
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