我将数据存储到Realm中,我在游戏对象中有一个目标列表:
Goal.swift
class Goal : Object {
dynamic var scoreTime = Date()
dynamic var scoreBy:Player?
dynamic var scoreForTeam:GameTeam?
dynamic var homeScoreAfter:Int = 0
dynamic var awayScoreAfter:Int = 0
let passers = List<Player>()
}
Game.swift
class Game : Object {
dynamic var startDate:Date? = nil
dynamic var endDate:Date? = nil
dynamic var homeTeam:GameTeam?
dynamic var awayTeam:GameTeam?
let goals = List<Goal>()
}
我在Game的目标属性中添加了一个目标,但是在保存发生后,目标列表似乎无效。这是代码:
let toCreate = Game()
toCreate.homeTeam = GameTeam()
toCreate.awayTeam = GameTeam()
toCreate.startDate = Date()
let goal = Goal(scoreBy: allPlayers[0].player, scoreForTeam: toCreate.homeTeam!, passedBy: [], scoreTime: Date(), homeScoreAfter: 1, awayScoreAfter: 0)
toCreate.goals.append(goal)
let realm = try! Realm()
try! realm.write {
realm.add(toCreate)
}
但是在realm.write
电话之后我遇到了这个错误:
(lldb) po toCreate.goals
expression produced error: error: Execution was interrupted, reason: EXC_BAD_ACCESS (code=1, address=0x8).
The process has been returned to the state before expression evaluation.
我不能再消耗目标列表了。它在realm.write完成之前打印正常。我在这里找不到一些微不足道的东西......?对象的其他部分播放得很好。
编辑:所以不知何故问题是属性Goal.passers
- 从对象中删除它可以解决问题。这可能与对象层次结构中有很多对玩家的引用有关吗?请参阅Game.homeTeam.players
,Goal.scoreBy
和Goal.passers
,其中包含对玩家对象的引用。
答案 0 :(得分:1)
需要回答我自己的问题。我的问题出现在Goal
- 对象的自定义初始化代码中,如下所示:
init(scoreBy:Player, scoreForTeam:GameTeam, passedBy:[Player]?, scoreTime:Date, homeScoreAfter:Int, awayScoreAfter:Int) {
super.init()
...
}
此代码不会生成可正常工作的域对象。没有自己的init方法内联创建Goal
- 对象解决了这个问题。
编辑:行为本身很奇怪 - 该构造函数是否有效,或者这是Realm中的错误?