我已经将crashlytics集成到我的iOS应用程序中。我得到了这样的崩溃日志了解织物的碰撞记录
# Issue #: 1
# Issue ID: 59940bb4be077a4dcc2837ff
# Session ID:
e68dd53b640d4ac39f21b511a9f78b78_90910b25826211e7a25d56847afe9799_0_v2
# Date: 2017-08-16T06:30:00Z
# OS Version: 10.3.3 (14G60)
# Device: iPhone 6s
# RAM Free: 3.8%
# Disk Free: 15.2%
#0. Crashed: com.apple.main-thread
0 MY APP 0x100086b50 specialized static Functions.retunDateStringFromDateString(dateString : String, inuputFormat : String, outPutFormat : String) -> String (Functions.swift:123)
1 MY APP 0x1000ef820 specialized TeamAttendanceViewController.tableView(UITableView, cellForRowAt : IndexPath) -> UITableViewCell (Functions.swift)
2 MY APP 0x1000eaa78 @objc TeamAttendanceViewController.tableView(UITableView, cellForRowAt : IndexPath) -> UITableViewCell (TeamAttendanceViewController.swift)
3 UIKit 0x193641d90 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 688
4 UIKit 0x193641fa8 -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 80
5 UIKit 0x19362f6ac -[UITableView _updateVisibleCellsNow:isRecursive:] + 2152
6 UIKit 0x193646f98 -[UITableView _performWithCachedTraitCollection:] + 120
7 UIKit 0x1933df49c -[UITableView layoutSubviews] + 176
8 UIKit 0x1932f9cc0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1200
9 QuartzCore 0x1904ea274 -[CALayer layoutSublayers] + 148
10 QuartzCore 0x1904dede8
CA::Layer::layout_if_needed(CA::Transaction*) + 292
11 QuartzCore 0x1904deca8
CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
12 QuartzCore 0x19045a34c
CA::Context::commit_transaction(CA::Transaction*) + 252
13 QuartzCore 0x1904813ac
CA::Transaction::commit() + 504
14 QuartzCore 0x190481e78
CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned
long, void*) + 120
15 CoreFoundation 0x18d1789a8
__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
16 CoreFoundation 0x18d176630 __CFRunLoopDoObservers
+ 372
17 CoreFoundation 0x18d176a7c __CFRunLoopRun + 956
18 CoreFoundation 0x18d0a6da4 CFRunLoopRunSpecific +
424
19 GraphicsServices 0x18eb11074 GSEventRunModal + 100
20 UIKit 0x193361c9c UIApplicationMain + 208
21 MY APP 0x10002f710 main
(AppDelegate.swift:16)
22 libdyld.dylib 0x18c0b559c start + 4
这是我第一次读取崩溃日志文件。我认为。我的Function
课程的returnDateString
方法的123行有问题。但是,我怎么能理解这条线的确切问题?这是我在Function类中的方法。
class func retunDateStringFromDateString(dateString : String,inuputFormat: String, outPutFormat : String) -> String{
if(dateString != ""){
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = inuputFormat//this your string date format
let date = dateFormatter.date(from: dateString)
dateFormatter.dateFormat = outPutFormat///this is what you want to convert format
let timeStamp = dateFormatter.string(from: date!)
return timeStamp
}else{
return ""
}
}
这是我的123行。 let timeStamp = dateFormatter.string(from: date!)
这是什么原因? 请帮帮我。 感谢
UPDATE
var inTimeArray = inTime?.components(separatedBy: ".")
print(inTimeArray)
cell.inOneTime.text = Functions.nullToNilForString(value: Functions.retunDateStringFromDateString(dateString: (inTimeArray?[0])! ,inuputFormat: "yyyy-MM-dd'T'HH:mm:ss", outPutFormat: "HH:mm") as AnyObject?)?.description
可能重复的[DateFormatter不会返回日期为“HH:mm:ss”](https://stackoverflow.com/questions/40692378/dateformatter-doesnt-return-date-for-hhmmss) – the4kman
您最在'date'中可能有'nil'。什么是'inputFormat'和什么是'dateString'?除非你是100%,否则不要使用强制解包,这个值永远不会为零。至于理解崩溃日志,崩溃日志只显示堆栈跟踪,他们不能告诉你问题的确切原因,因为在发布模式下,你的应用程序不在调试器中运行,因此不会有任何断点来捕获和识别运行时异常。但是,正如您在此处所做的那样,您可以在大多数情况下找出导致错误的线路的错误。 –
@DávidPásztor我更新了我的问题与调用线 – user1960169