ios解决云数据库bmob异步读取到TableView的方案

因为bmob的数据只支持异步读取,而提供的查询方法又是可以逃逸的闭包,造成APP端运行的时候,数据还是空的.折腾了几天,终于想到一个借用.plist文件解决方案: 启动 -> 读云数据库,写入本地plist文件 -> 在Table页面读取.plist文件

1. 首页ViewController:

    override func viewDidLoad() {
        super.viewDidLoad()
  
        let query:BmobQuery = BmobQuery(className: "Others")  //读取云端数据表名
             
        query.findObjectsInBackground { (array, error) in       
            var i =  0    
            //使用appData.plist文件存云端数据内容            
            let plistPath = Bundle.main.path(forResource: "appData", ofType: "plist")
            let itemArray = NSMutableArray(contentsOfFile: plistPath!)
            //使用number.plist文件存云端数据表数据条数
            let plistPath2 = Bundle.main.path(forResource: "number", ofType: "plist")
            let itemArray2 = NSMutableArray(contentsOfFile: plistPath2!)
            //写入数据表的数据条数,用于在table页面设置条目数
            let dict2 = itemArray2?[0] as! NSDictionary
            dict2.setValue((array?.count)!, forKey: "num")
            itemArray2?.write(toFile: plistPath2!, atomically: true)
       
            //读取云端数据写入appData.plist文件
            while( i < (array?.count)! ) {
                
                let obj = array?[i] as! BmobObject
                
                let dict = itemArray?[i] as! NSDictionary
                var name2 =  (obj.object(forKey: "app_name") as? String)!
                var url2 = (obj.object(forKey: "app_url") as? String)!
                
                dict.setValue(name2, forKey: "app_name")
                dict.setValue(url2, forKey: "app_url")
                
                itemArray?.write(toFile: plistPath!, atomically: true)
                
                i = i + 1
            }
            
        }

    }

2. Table页面ViewController

   
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

        let cell = tableView.dequeueReusableCell(withIdentifier: "CellApp", for: indexPath)
        cell.textLabel!.text = nil
        
        //从appData.plist文件里读取数据条目数
        let plistPath = Bundle.main.path(forResource: "appData", ofType: "plist")
        let itemArray = NSMutableArray(contentsOfFile: plistPath!)
        
        let row = indexPath.row
        let rowDict = itemArray?[row] as! NSDictionary
        cell.textLabel?.text = rowDict["app_name"] as? String
        cell.accessoryType = .none 
        return cell      
    }

    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        
        //从number.plist文件里读取数据条目数
        let plistPath2 = Bundle.main.path(forResource: "number", ofType: "plist")
        let itemArray2 = NSMutableArray(contentsOfFile: plistPath2!)
        let xx = itemArray2?[0] as! NSDictionary       
        return xx["num"]! as! Int
        
    }

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number.plist文件结构:

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appData.plist文件结构:

Paste_Image.png