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问题：

坠毁试飞找不到理由

鲍驰
2023-03-14

我的试飞测试员中只有一人报告了一次坠机事故。两个月来，我一直在挠头，为什么它会对他们而不是其他人崩溃。我无法复制自己的坠毁，所以必须提交一个新的构建通过测试飞行系统与iTunes connect，并等待用户测试它之前，我知道我是否取得了进展。这是非常缓慢和乏味的过程，所以我在这里恳求你的知识，并帮助我首先理解为什么应用程序崩溃只有这一个用户（12）。

我从试飞中得到的坠机报告是

> Incident Identifier: 64F2AB18-E3F4-48A2-A865-CCAB2FF2BF12
Beta Identifier:     5E64ED31-B493-4406-94E5-E4233A84D2A6
Hardware Model:      iPhone6,2
Process:             anAppName [2491]
Path:                /private/var/mobile/Containers/Bundle/Application/0C971485-F0ED-4CA0-96F7-AF9EA7A71A30/anAppName.app/anAppName
Identifier:          com.aCleverName.anAppName
Version:             1.0.9.8.1 (1.0)
Beta:                YES
Code Type:           ARM-64 (Native)
Parent Process:      launchd [1]

Date/Time:           2015-10-16 11:39:04.04 +0100
Launch Time:         2015-10-16 11:38:54.54 +0100
OS Version:          iOS 9.0.2 (13A452)
Report Version:      105

Exception Type:  EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x00000001000d6b24
Triggered by Thread:  0

Global Trace Buffer (reverse chronological seconds):
0.467279     CFNetwork                  0x0000000183f919a4 TCP Conn 0x1545fb500 SSL Handshake DONE
0.722080     CFNetwork                  0x0000000183f918b4 TCP Conn 0x1545fb500 starting SSL negotiation
0.722520     CFNetwork                  0x0000000184033760 TCP Conn 0x1545fb500 complete. fd: 7, err: 0
0.723794     CFNetwork                  0x0000000184034c8c TCP Conn 0x1545fb500 event 1. err: 0
0.761090     CFNetwork                  0x0000000184034d64 TCP Conn 0x1545fb500 started
0.764039     CFNetwork                  0x000000018408a5a4 Creating default cookie storage with default identifier
0.764039     CFNetwork                  0x000000018408a570 Faulting in CFHTTPCookieStorage singleton
0.764039     CFNetwork                  0x00000001840dc498 Faulting in NSHTTPCookieStorage singleton
6.422985     AppleJPEG                  0x000000018bb02348 [0x1550bb000] Created session
6.435154     AppleJPEG                  0x000000018bb02348 [0x15487f600] Created session
6.480890     AppleJPEG                  0x000000018bb02348 [0x1550c1000] Created session
6.952666     CFNetwork                  0x0000000183f919a4 TCP Conn 0x1546a5230 SSL Handshake DONE
7.034320     CFNetwork                  0x0000000183f918b4 TCP Conn 0x1546a5230 starting SSL negotiation
7.035121     CFNetwork                  0x0000000184033760 TCP Conn 0x1546a5230 complete. fd: 6, err: 0
7.036622     CFNetwork                  0x0000000184034c8c TCP Conn 0x1546a5230 event 1. err: 0
7.607332     CFNetwork                  0x0000000184034d64 TCP Conn 0x1546a5230 started
7.726344     CFNetwork                  0x0000000183f919a4 TCP Conn 0x154670e50 SSL Handshake DONE
7.868298     CFNetwork                  0x0000000183f919a4 TCP Conn 0x1546408d0 SSL Handshake DONE
7.877690     CFNetwork                  0x0000000183f918b4 TCP Conn 0x154670e50 starting SSL negotiation
7.878310     CFNetwork                  0x0000000184033760 TCP Conn 0x154670e50 complete. fd: 7, err: 0
7.879900     CFNetwork                  0x0000000184034c8c TCP Conn 0x154670e50 event 1. err: 0
7.979690     CFNetwork                  0x0000000183f918b4 TCP Conn 0x1546408d0 starting SSL negotiation
7.981042     CFNetwork                  0x0000000184033760 TCP Conn 0x1546408d0 complete. fd: 6, err: 0
7.982874     CFNetwork                  0x0000000184034c8c TCP Conn 0x1546408d0 event 1. err: 0
8.939527     CFNetwork                  0x0000000184034d64 TCP Conn 0x154670e50 started
9.065458     CFNetwork                  0x0000000184034d64 TCP Conn 0x1546408d0 started

Thread 0 name:
Thread 0 Crashed:
0   anAppName                       0x00000001000d6b24 specialized MeetUpsListDisplayTableViewController.tableView(UITableView, cellForRowAtIndexPath : NSIndexPath) -> UITableViewCell (MeetUpsListDisplayTableViewController.swift:141)
1   anAppName                       0x00000001000d48f0 @objc MeetUpsListDisplayTableViewController.tableView(UITableView, cellForRowAtIndexPath : NSIndexPath) -> UITableViewCell (MeetUpsListDisplayTableViewController.swift:0)
2   UIKit                           0x000000018a125660 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 688
3   UIKit                           0x000000018a1257b8 -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 80
4   UIKit                           0x000000018a1153b8 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2440
5   UIKit                           0x000000018a12a348 -[UITableView _performWithCachedTraitCollection:] + 104
6   UIKit                           0x0000000189ecba74 -[UITableView layoutSubviews] + 176
7   UIKit                           0x0000000189ddeff0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 644
8   QuartzCore                      0x00000001895e5f14 -[CALayer layoutSublayers] + 148
9   QuartzCore                      0x00000001895e0b20 CA::Layer::layout_if_needed(CA::Transaction*) + 292
10  QuartzCore                      0x00000001895e09e0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
11  QuartzCore                      0x00000001895e007c CA::Context::commit_transaction(CA::Transaction*) + 252
12  QuartzCore                      0x00000001895dfdd0 CA::Transaction::commit() + 516
13  QuartzCore                      0x00000001895d94bc CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 80
14  CoreFoundation                  0x0000000184843c30 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
15  CoreFoundation                  0x00000001848419d4 __CFRunLoopDoObservers + 372
16  CoreFoundation                  0x0000000184841e04 __CFRunLoopRun + 928
17  CoreFoundation                  0x0000000184770dc0 CFRunLoopRunSpecific + 384
18  GraphicsServices                0x000000018f8c4088 GSEventRunModal + 180
19  UIKit                           0x0000000189e4af44 UIApplicationMain + 204
20  anAppName                       0x0000000100118ef4 main (AppDelegate.swift:19)
21  libdyld.dylib                   0x0000000199bbe8b8 start + 4

Thread 1:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 2 name:
Thread 2:
0   libsystem_kernel.dylib          0x0000000199cdc59c kevent_qos + 8
1   libdispatch.dylib               0x0000000199ba0a04 _dispatch_mgr_invoke + 232
2   libdispatch.dylib               0x0000000199b8f93c _dispatch_source_invoke + 0

Thread 3:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 4:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 5:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 6 name:
Thread 6:
0   libsystem_kernel.dylib          0x0000000199cc0c30 mach_msg_trap + 8
1   libsystem_kernel.dylib          0x0000000199cc0aac mach_msg + 72
2   CoreFoundation                  0x0000000184844168 __CFRunLoopServiceMachPort + 196
3   CoreFoundation                  0x0000000184841e6c __CFRunLoopRun + 1032
4   CoreFoundation                  0x0000000184770dc0 CFRunLoopRunSpecific + 384
5   CFNetwork                       0x000000018400e074 +[NSURLConnection(Loader) _resourceLoadLoop:] + 412
6   Foundation                      0x00000001857cb138 __NSThread__start__ + 1000
7   libsystem_pthread.dylib         0x0000000199da3b3c _pthread_body + 156
8   libsystem_pthread.dylib         0x0000000199da3aa0 _pthread_body + 0
9   libsystem_pthread.dylib         0x0000000199da1030 thread_start + 4

Thread 7 name:
Thread 7:
0   libsystem_kernel.dylib          0x0000000199cdb408 __select + 8
1   CoreFoundation                  0x000000018484a6d0 __CFSocketManager + 648
2   libsystem_pthread.dylib         0x0000000199da3b3c _pthread_body + 156
3   libsystem_pthread.dylib         0x0000000199da3aa0 _pthread_body + 0
4   libsystem_pthread.dylib         0x0000000199da1030 thread_start + 4

Thread 8:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 9:
0   libsystem_kernel.dylib          0x0000000199cdbc0c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000199da1538 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000199da1028 start_wqthread + 4

Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000101315400   x1: 0x0000000199d9a8f4   x2: 0x0000000000000050   x3: 0x0000000199d08674
    x4: 0x0000000000000000   x5: 0x0000000000000033   x6: 0x0000000000000000   x7: 0x0000000000000000
    x8: 0x0000000101315408   x9: 0x0000000000000005  x10: 0x0000000000000000  x11: 0x0000000000000a00
   x12: 0x0000000000000040  x13: 0x0000000000000009  x14: 0x0000000000904810  x15: 0x0000000155a00000
   x16: 0x0000000199d08178  x17: 0x00000001001905e0  x18: 0x0000000000000000  x19: 0x00000001548acc00
   x20: 0x0000000000000008  x21: 0x0000000000000010  x22: 0x0000000000000000  x23: 0x0000000000000020
   x24: 0x0000000000000040  x25: 0x0000000000000200  x26: 0x0000000100458a40  x27: 0x0000000000000420
   x28: 0x0000000000000000  fp: 0x000000016fd813f0   lr: 0x00000001000d5f1c
    sp: 0x000000016fd81210   pc: 0x00000001000d6b24 cpsr: 0x80000000

Binary Images: ...

和代码

import UIKit
import CoreLocation

let locationsManager = CLLocationManager()

var usersLocation = CLLocation()

var flag : Bool!

class MeetUpsListDisplayTableViewController : UITableViewController,CLLocationManagerDelegate {

var meetUpsJSON = [NSDictionary]()
var userLocation : CLLocation?

func locationManager(manager: CLLocationManager, didFailWithError error: NSError) {
print("failed with error :\(error)")
locationsManager.stopUpdatingLocation()
}

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

usersLocation = locations.last!

let usersCoordinates = CLGeocoder()
usersCoordinates.reverseGeocodeLocation(usersLocation) { ( placemark : [CLPlacemark]?, error : NSError?) -> Void in

if error == nil {

self.fetchEventsInUsersCountry((placemark?.last?.ISOcountryCode)!)
locationsManager.stopUpdatingLocation()
}else{
print(error)
}
}

locationsManager.stopUpdatingLocation()
}


func fetchEventsInUsersCountry( countryISO : String ){

let components = NSURLComponents()
components.scheme = "https"
components.host = "www.website.com"
components.path = "/TMVUKApp/findEvents.php"
components.query = "usersISOCountryCode=\(countryISO)"

let fetchEventsURL = components.URL!
print(fetchEventsURL)

let request = NSURLRequest(URL: fetchEventsURL)

let session = NSURLSession.sharedSession()

let task = session.dataTaskWithRequest(request) {

(data, response, error) -> Void in

if error == nil{

self.meetUpsJSON = try! NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableLeaves) as! [NSDictionary]

dispatch_async(dispatch_get_main_queue()) {


if self.meetUpsJSON.count > 0 {

self.tableView.reloadData()

}
}
}

}

task.resume()

}

override func viewDidLoad() {

super.viewDidLoad()


self.tableView.registerNib(UINib(nibName: "MeetUpDisplayTableViewCell", bundle: nil), forCellReuseIdentifier: "meetUp")
navigationController?.hidesBarsOnSwipe = true
tableView.tableFooterView = UIView(frame: CGRectZero) 

//************************** GEtting User's latitude/ Longitude ********************

locationsManager.delegate = self
locationsManager.startUpdatingLocation()

//************************** GEtting User's latitude/ Longitude ********************






// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false

// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}

// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {


return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

print("noris")

return self.meetUpsJSON.count
}



override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

print("cfraip")

let cell = self.tableView.dequeueReusableCellWithIdentifier("meetUp", forIndexPath: indexPath) as! MeetUpDisplayTableViewCell
//  
//  ///meetUpsJSON is array of dictionaries.

let JSONDict = meetUpsJSON[indexPath.row]


let dateFormatter = NSDateFormatter()

dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

dateFormatter.timeZone = NSTimeZone.systemTimeZone()

if let eventDateString = JSONDict["EventDateTime"] as? String {
let eventDate = dateFormatter.dateFromString(eventDateString)
let calendar = NSCalendar.currentCalendar()

let components : NSDateComponents = calendar.components([NSCalendarUnit.Year,NSCalendarUnit.Month,NSCalendarUnit.Day,NSCalendarUnit.Hour,NSCalendarUnit.Minute,NSCalendarUnit.Weekday], fromDate: eventDate!)

cell.lblCalendarDateDisplay.text = "\(components.day)"

var dayOfWeek : String?
var monthOfYear : String?

switch (components.weekday){
case 1:
dayOfWeek = "Sun"

case 2:
dayOfWeek = "Mon"

case 3:
dayOfWeek = "Tue"

case 4:
dayOfWeek = "Wed"

case 5:
dayOfWeek = "Thu"

case 6:
dayOfWeek = "Fri"

case 7:
dayOfWeek = "Sat"


default:
print("hit deafult")
}

switch (components.month){
case 1:
monthOfYear = "Jan"

case 2:
monthOfYear = "Feb"

case 3:
monthOfYear = "Mar"

case 4:
monthOfYear = "Apr"

case 5:
monthOfYear = "May"

case 6:
monthOfYear = "Jun"

case 7:
monthOfYear = "Jul"

case 8:
monthOfYear = "Aug"

case 9:
monthOfYear = "Sep"

case 10:
monthOfYear = "Oct"

case 11:
monthOfYear = "Nov"

case 12:
monthOfYear = "Dec"

default:
print("hit default")
}


cell.lblCalendarDayDisplay.text = dayOfWeek!
cell.lblCalendarMonthYearDisplay.text = "\(monthOfYear!) '\(components.year % 100)"
}

if let eventName = JSONDict["EventName"] as? String{
cell.lblEventNameDisplay.text = eventName
}


cell.vwCalendarDisplay.layer.borderWidth = 1

cell.vwCalendarDisplay.layer.borderColor = UIColor.blackColor().CGColor

if let eventTown = JSONDict["EventTown"] as? String{

cell.lblEventStatusDisplay.text = eventTown //?? ""
}

let userLocation = CLLocation(latitude: usersLocation.coordinate.latitude, longitude: usersLocation.coordinate.longitude)
let eventLocation = CLLocation(latitude: (JSONDict["EventLattitudeCoordinate"] as! NSString).doubleValue, longitude: (JSONDict["EventLongitudeCoordinate"] as! NSString).doubleValue)
let usersDistanceToEventInMeters = userLocation.distanceFromLocation(eventLocation)
let usersDistanceToEventInMiles = usersDistanceToEventInMeters * 0.000621371192
/// let usersDistanceToEventInKiloMeters = usersDistanceToEventInMeters / 1000
cell.lblEventDistanceDisplay.text = Int(usersDistanceToEventInMiles).description



return cell



}

崩溃报告所指示的行是

让cell=self.tableview.dequeuereusablecellwithidentifier（“meetup”，forindexPath：indexPath）为！MeetupDisplayTableViewCell

你能从这个崩溃日志中看出原因吗？“专业化”是什么意思？

非常感谢你的帮助

如果你必须投票否决这个问题。你干得好。但请勇敢地说出原因

更新：所以我安装了Fabric crashlytics并对我的代码和日志进行了详细的检查，以找出我在哪里崩溃了。从日志中可以看出，当我试图设置单元格的属性时，我就会崩溃。不过，如前所述，这只是一个用户的问题。有什么建议吗？多谢

共有1个答案

孟永望
2023-03-14

已解决：

在使用Fabric Crashlytics并逐行进行操作之后，我发现应用程序在这里崩溃了

      let dateFormatter = NSDateFormatter()

    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

//changed this
    //dateFormatter.timeZone = NSTimeZone.systemTimeZone()
//to
        dateFormatter.locale = Locale(localeIdentifier: "en_GB")

    if let eventDateString = JSONDict["EventDateTime"] as? String {
    let eventDate = dateFormatter.dateFromString(eventDateString)
    let calendar = NSCalendar.currentCalendar()

    let components : NSDateComponents = calendar.components([NSCalendarUnit.Year,NSCalendarUnit.Month,NSCalendarUnit.Day,NSCalendarUnit.Hour,NSCalendarUnit.Minute,NSCalendarUnit.Weekday], fromDate: eventDate!)

长话短说，当用户的设备使用12小时格式而不是24小时格式时，就会发生崩溃。

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