Question

我最近在项目中添加了新的Pod，并更新了以前的Pod，此代码以前一直都有效，现在我收到“模棱两可的'下标'”，我一直在检查其他答案，这似乎是我的方式当前设置它是正确的方法。我不确定为什么突然之间这些代码行会被标记为错误。

databaseRef.child("following").queryOrderedByKey().observeSingleEvent(of: .value, with: { (postsSnapshot) in
    let posts = postsSnapshot.value as! [String: AnyObject]
    for (_, post) in posts {
        for (_, postInfo) in post as! [String: AnyObject] {

            if let followingID = postInfo["uid"] as? String {
                for each in self.following {
                    if each == followingID {

                        guard let uid = postInfo["uid"] as! String? else {return}
                        guard let name = postInfo["businessName"] as! String? else {return}
                        guard let address = postInfo["businessStreet"] as! String? else {return}
                        guard let state = postInfo["businessState"] as! String? else {return}
                        guard let city = postInfo["businessCity"] as! String? else {return}

                        let data = ["uid":postInfo["uid"] as! String, "businessName":postInfo["businessName"] as! String, "businessStreet":postInfo["businessStreet"] as! String, "businessState":postInfo["businessState"] as! String, "businessCity":postInfo["businessCity"] as! String,"businessZIP":postInfo["businessZIP"] as! String, "businessPhone":postInfo["businessPhone"] as! String, "businessLatitude":postInfo["businessLatitude"] as! String, "businessLongitude":postInfo["businessLongitude"] as! String, "businessWebsite":postInfo["businessWebsite"] as! String, "facebookURL":postInfo["facebookURL"] as! String, "foursquareURL":postInfo["foursquareURL"] as! String, "googleURL":postInfo["googleURL"] as! String, "instagramURL":postInfo["instagramURL"] as! String, "snapchatURL":postInfo["snapchatURL"] as! String, "twitterURL":postInfo["twitterURL"] as! String, "yelpURL":postInfo["yelpURL"] as! String]

Answer 1

问题是您使用了AnyObject。 postInfo被声明为AnyObject，但随后您尝试像字典一样使用它，因此会出现错误。

如果post是词典的字典，则声明为：

更改：

for (_, postInfo) in post as! [String: AnyObject] {

收件人：

for (_, postInfo) in post as! [String: [String: AnyObject]] {

这会将postInfo更改为[String: AnyObject]，而不是AnyObject。

Swift对“下标”的模棱两可使用

1 个答案: