Ios 二维数组在swift中给出索引超出范围的错误
我有一个二维数组“Team”对象和一个数组“Team”,当我试图从二维数组打印附加数组时,它给出了错误。下面的代码打印给出了错误Ios 二维数组在swift中给出索引超出范围的错误,ios,arrays,swift,Ios,Arrays,Swift,我有一个二维数组“Team”对象和一个数组“Team”,当我试图从二维数组打印附加数组时,它给出了错误。下面的代码打印给出了错误 self.first_array = [] for i in 0..<json["LeagueStage"][0]["LeagueTable"].count { guard let name = json["LeagueStage"][0]["LeagueTable"][i]["name"].string, let
self.first_array = []
for i in 0..<json["LeagueStage"][0]["LeagueTable"].count {
guard let name = json["LeagueStage"][0]["LeagueTable"][i]["name"].string,
let id = json["LeagueStage"][0]["LeagueTable"][i]["id"].int,
let teamId = json["LeagueStage"][0]["LeagueTable"][i]["TeamID"].int,
let points = json["LeagueStage"][0]["LeagueTable"][i]["points"].string,
let played = json["LeagueStage"][0]["LeagueTable"][i]["played"].string,
let wins = json["LeagueStage"][0]["LeagueTable"][i]["wins"].string,
let draws = json["LeagueStage"][0]["LeagueTable"][i]["draws"].string,
let defeits = json["LeagueStage"][0]["LeagueTable"][i]["defeits"].string,
let goalsfor = json["LeagueStage"][0]["LeagueTable"][i]["goalsfor"].string,
let goalsagainst = json["LeagueStage"][0]["LeagueTable"][i]["goalsagainst"].string,
let average = json["LeagueStage"][0]["LeagueTable"][i]["average"].int,
let rank = json["LeagueStage"][0]["LeagueTable"][i]["rank"].int,
let hasTeamLogo = json["LeagueStage"][0]["LeagueTable"][i]["HasTeamLogo"].bool,
let imageUrl = json["LeagueStage"][0]["LeagueTable"][i]["TeamLogo"].string
else {
let dataFetch: [AnyHashable : Any] =
[
NSLocalizedDescriptionKey : NSLocalizedString("Veri Yok", value: "Hata", comment: "") ,
NSLocalizedFailureReasonErrorKey : NSLocalizedString("Veri Yok", value: "Hata", comment: "") ]
let err = NSError(domain: "ShiploopHttpResponseErrorDomain", code: 401, userInfo: dataFetch)
self.delegate?.errorUpdating(err as NSError)
return
}
let temp_team = Team(id: id,
teamId: teamId,
name: name,
points: Int(points)!,
played: Int(played)!,
wins: Int(wins)!,
draws: Int(draws)!,
defeits: Int(defeits)!,
goalsfor: Int(goalsfor)!,
goalsagainst: Int(goalsagainst)!,
average: average,
rank: rank,
HasTeamLogo: hasTeamLogo,
imageurl: imageUrl
)
self.first_array.append(temp_team)
}
}
self.teams.append(first_array)
print(teams[0][0].name)
我确信first_数组没有问题,因为当我喜欢下面的内容时,它可以工作
self.teams = [self.first_array, self.first_array]
错误:
致命错误:索引超出范围
我可以用打印机打印出来
print(self.teams.popLast()?[0].name)
self.first_array
和first_array
是指不同的东西。如果上述代码正确,那么问题是self.teams
与局部变量var teams=[[teams]](
不同。与self.first\u数组
和本地变量first\u数组
相同。希望你明白了
要解决此问题,请执行以下任一操作:
而不是写作
var团队=[[Team]]()
var first_数组=[Team]()
写
self.teams=[[Team]]()
self.first_数组=[Team]()
或者
不要使用
self.teams.append(self.first\u array)
,而是编写teams.append(first\u array)
,然后self.teams=teams
我在下面的代码中调用函数
self.teams = [[]]
我把它改成这个,它现在正在工作
self.teams = [[],[]]
错误日志确切地说是什么?@Tushar致命错误:索引超出范围swift惯例是对变量使用lowerCamelCase名称,而不是snake_大小写。此外,您应该更喜欢
let
常量和数组文本,而不是var
变量和append
调用。它可能会转到else条件,而不会将团队对象添加到数组中。这意味着,JSON数据可能在LeagueTable
条目中没有名称。@或者团队数是多少?您应该看看如何使用Swift 4中的Codable,以避免编写所有这些疯狂的JSON代码。嗯。。。升级Swift 3的支持时间不会太长
self.teams = [[],[]]