Question

我有X类型的字典[ String : Double ]，我试图将其嵌入另一个名为dictArray: [ Int : [String: Double] ]

的词典中

for (index, element) in hide.vertices.enumerate(){
            dictArray[index] =  HiddenLatlng(lat: element.latitude, lng: element.longitude).toDictionery() 
        }

//此处toDictionery类HiddenLatlng方法返回X类型的字典

我正在尝试将此dictArray嵌入到另一个词典中

dict = [String: AnyObject]()

dict["eventLatLngList"] = dictArray

但是当我打印dict

时

显示

dictionary is ["eventLatLngList": {
    0 =     {
        latitude = "27.68837718075604";
        longitude = "85.31910706311464";
    };
    3 =     {
        latitude = "27.68837718075604";
        longitude = "85.31910706311464";
    };
    1 =     {
        latitude = "27.69259521229669";
        longitude = "85.31552363187075";
    };
    2 =     {
        latitude = "27.68497603665675";
        longitude = "85.31393576413393";
    };
}]

但我的期望是：

dictionary is ["eventLatLngList": [
    0 :     [
        "latitude" : 27.68837718075604,
        "longitude" : 85.31910706311464
    ],
    3 :    [
        "latitude" : 27.68837718075604,
        "longitude" : 85.31910706311464
    ],
    1 :     [
        "latitude" : 27.69259521229669,
        "longitude" : 85.31552363187075
    },
    2 :     [
        "latitude" : 27.68497603665675,
        "longitude" : 85.31393576413393
    ]]

我无法弄清楚造成这种奇怪行为的原因是什么？我使用swift 2.2和xcode 7.3

更新

我正在尝试将一系列坐标保存到firebase以及与这些坐标相关的一些信息。

在dict["eventLatLngList"] = dictArray

之后

我把它保存到firebase：

reference.child("Events").childByAutoId().updateChildValues(dict) { (error: NSError?, reference: FIRDatabaseReference) in
            print("hides saved to firebase") // execution does not enter this closure
            if error != nil {
                print("error: \(error?.localizedDescription)")
            }else {
                print("information saved.")
            }

        }

但我的应用程序崩溃时没有任何错误。我不知道它为什么会崩溃。

如果我没有将dictArray添加到dict，则所有信息都会保存到firebase中。

，我用虚拟词典测试了它

var testDict = [ "school": ["class" : ["student" : "name"]]]

如果我将testDict添加到dict，则会按预期将其保存到firebase。

更新捕获的堆栈跟踪是：

* thread #1: tid = 0x47921, 0x016bdbe0 libswiftCore.dylib`swift_bridgeNonVerbatimFromObjectiveC + 196, queue
='com.apple.main-thread'，stop reason = EXC_BREAKPOINT（code = EXC_ARM_BREAKPOINT，subcode = 0xdefe） * frame＃0：0x016bdbe0 libswiftCore.dylib swift_bridgeNonVerbatimFromObjectiveC + 196 frame #1: 0x0152034c libswiftCore.dylib Swift._forceBridgeFromObjectiveC （Swift.AnyObject，A.Type） - ＆gt; A + 404 帧＃2：0x015888fc libswiftCore.dylib Swift._NativeDictionaryStorageOwner.bridgingObjectForKey (Swift.AnyObject) -> Swift.Optional<Swift.AnyObject> + 128 frame #3: 0x01588868 libswiftCore.dylib Swift._NativeDictionaryStorageOwner.objectForKey （Swift.AnyObject） - ＆gt; Swift.Optional + 32 帧＃4：0x01588a70 libswiftCore.dylib @objc Swift._NativeDictionaryStorageOwner.objectForKey (Swift.AnyObject) -> Swift.Optional<Swift.AnyObject> + 40 frame #5: 0x002601cc Hiidden + [FSnapshotUtilities internalNodeFrom：priority：withValidationFrom：atDepth：path：]（self =， _cmd =，val =，aPriority =，fn = @“updateChildValues：withCompletionBlock：”，depth =， path = @“0 elements”）+ 340，FSnapshotUtilities.m：61 帧＃6：0x00260042隐藏+[FSnapshotUtilities nodeFrom:priority:withValidationFrom:atDepth:path:](self=<unavailable>, _cmd=<unavailable>, val=<unavailable>, aPriority=<unavailable>, fn=@"updateChildValues:withCompletionBlock:", depth=0, path=@"0 elements") + 90 at FSnapshotUtilities.m:33 frame #7: 0x0025ffb6 Hiidden + [FSnapshotUtilities nodeFrom：priority：withValidationFrom：]（self =， _cmd =，val =，priority =，fn = @“updateChildValues：withCompletionBlock：”）+ 130 at FSnapshotUtilities.m：28 帧＃8：0x0025ff1a Hiidden +[FSnapshotUtilities nodeFrom:withValidationFrom:](self=<unavailable>, _cmd=<unavailable>, val=<unavailable>, fn=@"updateChildValues:withCompletionBlock:") + 50 at FSnapshotUtilities.m:24 frame #9: 0x00260da8 Hiidden + [FSnapshotUtilities compoundWriteFromDictionary：withValidationFrom：]（self =， FSnapshotUtilities.m中的_cmd =，values =，fn =）+ 424：161 帧＃10：0x00289a26来自@callee_owned的隐藏-[FIRDatabaseReference updateChildValuesInternal:withCompletionBlock:from:](self=<unavailable>, _cmd=<unavailable>, values=<unavailable>, block=(Hiidden重组thunk助手（@owned Swift.Optional＆lt; __ ObjC.NSError＆gt ;, @owned __ObjC.FIRDatabaseReference） - ＆gt; （@unowned（））到@callee_unowned @convention（block）（@ unowned Swift.Optional＆lt; __ ObjC.NSError＆gt;，@ unowned __ObjC.FIRDatabaseReference） - ＆GT; （@unowned（））at FRecord.swift），fn = @“updateChildValues：withCompletionBlock：”）+ 142 at FIRDatabaseReference.m：185 帧＃11：0x0028998c Hiidden -[FIRDatabaseReference updateChildValues:withCompletionBlock:](self=0x167ecf90, _cmd=<unavailable>, values=<unavailable>, block=<unavailable>) + 52 at FIRDatabaseReference.m:179 frame #12: 0x000c6330 Hiidden FRecord.save（hide = Hiidden.Hide @ 0x00fde6c8，completion = 0x0006c8ec Hiidden Hiidden.HideViewModel.(save () -> ()).(closure #1) at HideViewModel.swift:39, self=0x1ae54500) -> ()) -> () + 4108 at FRecord.swift:116 frame #13: 0x000697f8 Hiidden HideViewModel.save（self = 0x173529c8） - ＆gt;（）+ 1432 at HideViewModel.swift：43 帧＃14：0x001a08fc Hiidden MessageViewController.btnSave(sender=0x1abee640, self=0x17352800) -> () + 4732 at MessageViewController.swift:77 frame #15: 0x001a0a4c Hiidden @ objc MessageViewController.btnSave（UIBarButtonItem） - ＆gt; （）+ 100 at MessageViewController.swift：0 帧＃16：0x275f76a0 UIKit -[UIApplication sendAction:to:from:forEvent:] + 80 frame #17: 0x2777a0b8 UIKit - [UIBarButtonItem（UIInternal）_sendAction：withEvent：] + 140 帧＃18：0x275f76a0 UIKit -[UIApplication sendAction:to:from:forEvent:] + 80 frame #19: 0x275f7630 UIKit - [UIControl sendAction：to：forEvent：] + 64 帧＃20：0x275df56a UIKit -[UIControl _sendActionsForEvents:withEvent:] + 466 frame #21: 0x275df696 UIKit - [UIControl _sendActionsForEvents：withEvent：] + 766 帧＃22：0x275f6f50 UIKit -[UIControl touchesEnded:withEvent:] + 616 frame #23: 0x275f6bbe UIKit - [UIWindow _sendTouchesForEvent：] + 646 帧＃24：0x275ef546 UIKit -[UIWindow sendEvent:] + 642 frame #25: 0x275bfdd4 UIKit - [UIApplication sendEvent：] + 204 帧＃26：0x324d751a UIKit -[UIApplicationAccessibility sendEvent:] + 62 frame #27: 0x275be378 UIKit _ UIApplicationHandleEventQueue + 5016 帧＃28：0x22fa39e6 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 14 frame #29: 0x22fa35d6 CoreFoundation __ CFRunLoopDoSources0 + 454 帧＃30：0x22fa193e CoreFoundation __CFRunLoopRun + 806 frame #31: 0x22ef01c8 CoreFoundation CFRunLoopRunSpecific + 516 帧＃32：0x22eeffbc CoreFoundation CFRunLoopRunInMode + 108 frame #33: 0x2450caf8 GraphicsServices GSEventRunModal + 160 帧＃34：0x27628434在AppDelegate.swift上的UIKit UIApplicationMain + 144 frame #35: 0x001cd098 Hiidden main + 172：23 帧＃36：0x22b9c872 libdyld.dylib`start + 2

swift

0 个答案: