Question

As you can see here

Table "public.scoreboards"
        Column        |            Type             |                        Modifiers                         
----------------------+-----------------------------+----------------------------------------------------------
 id                   | integer                     | not null default nextval('scoreboards_id_seq'::regclass)
 name_of_scoreboard   | character varying           | 
 name_of_organization | character varying           | 
 name_of_activity     | character varying           | 
 user_id              | integer                     | 
 created_at           | timestamp without time zone | not null
 updated_at           | timestamp without time zone | not null
 states               | character varying           | 
 country              | character varying           | 
 cities               | character varying           | 
Indexes:
    "scoreboards_pkey" PRIMARY KEY, btree (id)
    "index_scoreboards_on_user_id" btree (user_id)
    "index_scoreboards_on_user_id_and_created_at" btree (user_id, created_at)
Foreign-key constraints:
    "fk_rails_09668734c5" FOREIGN KEY (user_id) REFERENCES users(id)
Referenced by:
    TABLE "comments" CONSTRAINT "fk_rails_5cb64542d4" FOREIGN KEY (scoreboard_id) REFERENCES scoreboards(id)

                                     Table "public.users"


    Column       |            Type             |                     Modifiers                      
-------------------+-----------------------------+----------------------------------------------------
 id                | integer                     | not null default nextval('users_id_seq'::regclass)
 name              | character varying           | 
 email             | character varying           | 
 created_at        | timestamp without time zone | not null
 updated_at        | timestamp without time zone | not null
 password_digest   | character varying           | 
 remember_digest   | character varying           | 
 admin             | boolean                     | default false
 activation_digest | character varying           | 
 activated         | boolean                     | default false
 activated_at      | timestamp without time zone | 
 reset_digest      | character varying           | 
 reset_sent_at     | timestamp without time zone | 
Indexes:
    "users_pkey" PRIMARY KEY, btree (id)
    "index_users_on_email" UNIQUE, btree (email)
Referenced by:
    TABLE "scoreboards" CONSTRAINT "fk_rails_09668734c5" FOREIGN KEY (user_id) REFERENCES users(id)
:

handlerID数组已填充，但是当我检查时，它是空的。：（请帮忙我已经更新了所有代码。

这是一个调用代码。我用按钮拨打每个基金

import UIKit

class Connecting {

let refHandler = Firebase(url: "https://-unique-link-.firebaseio.com/handlers")

var handlerID: [AnyObject] = []

func getHandlerStatus() {
        refHandler.queryOrderedByChild("status").observeEventType(.ChildAdded, withBlock: { snapshot in
            if let status = snapshot.value["status"] as? Int {
                if status == 0 {
                    self.handlerID.append(snapshot.key)
                    print(self.handlerID)
                } else {
                    //Do Nothing
                }
            }
        })
}

func handlerIDReturn() -> NSArray {
    print(handlerID)
    return handlerID
}

}

Answer 1

您只需要创建Connecting的一个实例并使用它。目前，每次拨打Connecting()都会给你一个新对象。

let connecting = Connecting()

@IBAction func callerButton(sender: AnyObject) {
    connecting.getHandlerStatus()
}
@IBAction func button2nd(sender: AnyObject) {
    print(connecting.handlerIDReturn())
}

Firebase将数据添加到Array但仍为空

1 个答案: