ios - 在使用 SFRestAPI 时一起使用部分和 tableviewcells 时出错

Question

var accountId = String()
var dataRows = [NSDictionary]()
var grandChilds = [NSDictionary]()
var dataOfGrandChilds = NSMutableDictionary()
override func viewDidLoad() {
    super.viewDidLoad()
    print("loaded hie \(accountId)")
    let request = SFRestAPI.sharedInstance().requestForQuery("SELECT Name,Id FROM Account where parentid='\(self.accountId)'");
    //SFRestAPI.sharedInstance().send(request, delegate: self);
    SFRestAPI.sharedInstance().sendRESTRequest(request, failBlock: {error in print(error)}, completeBlock: { responce in print(responce)
        self.dataRows = responce["records"] as! [NSDictionary]
        var counter = 0;
        for i in self.dataRows
        {
            let requestForGrandChilds = SFRestAPI.sharedInstance().requestForQuery("select Name,Id from Account where parentid='\(i["Id"]!)'")
            SFRestAPI.sharedInstance().sendRESTRequest(requestForGrandChilds,
            failBlock:
            {
                error in print(error)
                print("error block")
            },
            completeBlock:
            {
                responceChild in
                self.grandChilds = responceChild["records"] as! [NSDictionary]
                self.dataOfGrandChilds["\(counter)"] = self.grandChilds
                print(self.dataOfGrandChilds)
                counter += 1
                print("control still in inner competion block")
                dispatch_async(dispatch_get_main_queue(),
                    { () -> Void in
                        print("Control came to main queue")
                        self.tableView.reloadData()
                })
            })   
        }

    })

}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    if(dataOfGrandChilds.count > 0 ){
        return dataOfGrandChilds.count
    }
    return 1
}

override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return dataRows[section]["Name"] as? String
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("toViewChilds", forIndexPath: indexPath)
    print(indexPath.section)
    print(dataOfGrandChilds["\(indexPath.section)"])
    if let tempData = dataOfGrandChilds["\(indexPath.section)"]
    {
        cell.textLabel?.text = tempData[indexPath.row]["Name"] as? String
    }
    return cell
}

在第一个请求中，我尝试获取一个 ID 的直接子帐户。在第一个请求的完成 block 中，我正在尝试获取 grand child accounts 。 dataRows 有部分标题的数据(这是直接的子名称)。 dataOfGrandChilds 是一个字典，它将节号作为键，相应的 grandChilds 数组作为它的值。

在重新加载我的 tableView 时，我只能显示第一个部分的 child ，而不是第二个部分的 child 。请帮助寻找解决方案。

我得到的错误是

2016-06-07 11:10:30.764 iCRM[67964:11218133] *** Terminating app due to uncaught exception 'NSRangeException', reason: '-[__NSCFArray objectAtIndex:]: index (1) beyond bounds (1)'

Answer 1

var accountId = String()
var dataRows = [NSDictionary]()
var grandChilds = [NSDictionary]()
var dataOfGrandChilds = NSMutableDictionary()
override func viewDidLoad() {
    super.viewDidLoad()
    print("loaded hie \(accountId)")
    let request = SFRestAPI.sharedInstance().requestForQuery("SELECT Name,Id FROM Account where parentid='\(self.accountId)'");
    //SFRestAPI.sharedInstance().send(request, delegate: self);
    SFRestAPI.sharedInstance().sendRESTRequest(request, failBlock: {error in print(error)}, completeBlock: { responce in print(responce)
        self.dataRows = responce["records"] as! [NSDictionary]
        var counter = 0;
        for i in self.dataRows
        {
            let requestForGrandChilds = SFRestAPI.sharedInstance().requestForQuery("select Name,Id from Account where parentid='\(i["Id"]!)'")
            SFRestAPI.sharedInstance().sendRESTRequest(requestForGrandChilds,
            failBlock:
            {
                error in print(error)
                print("error block")
            },
            completeBlock:
            {
                responceChild in
                self.grandChilds = responceChild["records"] as! [NSDictionary]
                self.dataOfGrandChilds["\(counter)"] = self.grandChilds
                print(self.dataOfGrandChilds)
                counter += 1
                print("control still in inner competion block")
                dispatch_async(dispatch_get_main_queue(),
                    { () -> Void in
                        print("Control came to main queue")
                        self.tableView.reloadData()
                })
            })   
        }

    })

}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete implementation, return the number of rows
    if let countOfRows = dataOfGrandChilds[section]?.count  // to avoid un-wrapping nil value
    {
        return countOfRows
    }
    return 1
}





override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return dataRows[section]["Name"] as? String
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("toViewChilds", forIndexPath: indexPath)
    print(indexPath.section)
    print(dataOfGrandChilds["\(indexPath.section)"])
   if let tempData = dataOfGrandChilds["\(indexPath.section)"]
    {
        if(tempData.count != 0 )//to avoid array index out of bound exceptions
        {
            cell.textLabel?.text = tempData[indexPath.row]["Name"] as? String
        }
    }
    return cell
}

所做的更改是:

1. numberOfRowsInSection(): 返回正确的行数
2. cellForRowAtIndexPath(): tempData.count != 0 因为我们需要避免 NSRangeException