无法指定“AnyObject”类型的值？到’String！’类型的值 – 与P

发布时间：2020-12-14 02:27:32 所属栏目：百科来源：网络整理

导读：将我的代码更新为 swift 1.2后,我坚持了一点 var Question:String!var Answere:String!var Answeres:[String]!var ObjectIDsArray:[String]!var ButtonNumber:String!var ObjectIDsArrayCount:Int!var query : PFQuery = PFQuery(className: "AddonQuiz") qu

将我的代码更新为 swift 1.2后,我坚持了一点

var Question:String!
var Answere:String!
var Answeres:[String]!
var ObjectIDsArray:[String]!
var ButtonNumber:String!
var ObjectIDsArrayCount:Int!


var query : PFQuery = PFQuery(className: "AddonQuiz")
        query.getObjectInBackgroundWithId(QuestionID){
            (ObjectHolder : PFObject?,error : NSError?) -> Void in

            if error == nil {

                self.Question = ObjectHolder["ImageLink"] as! String
                self.Answeres = ObjectHolder["Answeres"] as! Array
                self.Answere = ObjectHolder["Right"] as! String




                if self.Answeres.count > 0 {

随着错误

Cannot assign a value of type 'AnyObject?' to a value of type 'String!'
Cannot assign a value of type 'AnyObject?' to a value of type '[String]!'
Cannot assign a value of type 'AnyObject?' to a value of type 'String!'

对于线

self.Question = ObjectHolder["ImageLink"] as! String
self.Answeres = ObjectHolder["Answeres"] as! Array
self.Answere = ObjectHolder["Right"] as! String

有没有解决这个问题？

if let ObjectHolder = ObjectHolder { 
    self.Question = ObjectHolder["ImageLink"] as! String
    self.Answeres = ObjectHolder["Answeres"] as! Array
    self.Answere = ObjectHolder["Right"] as! String
}

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!