[iOS] 使用UIRefreshControl 實現 UITableView下拉重新整理（Swift版本）

標籤：swift   ios   

首先，在viewDidLoad中初始化相關資料：

  override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view.                //添加重新整理        refreshControl.addTarget(self, action: "refreshData", forControlEvents: UIControlEvents.ValueChanged)        refreshControl.attributedTitle = NSAttributedString(string: "鬆手重新整理新聞")        newsTableView.addSubview(refreshControl)            }

這樣下拉重新整理已經可以看到了：

接下來把Selector 完善一下，添加refreshData方法：

 // 重新整理資料    func refreshData() {        let bquery = BmobQuery(className: "News")        bquery.findObjectsInBackgroundWithBlock({array, error in            self.dataArray = array            self.newsTableView.reloadData()            self.refreshControl.endRefreshing()        })    }

完整的代碼如下，因為涉及到 BMOB API 的調用，所以有些代碼可能看不懂，但是並不影響準系統的使用。

////  NewsViewController.swift//  WomenWorkerGuide////  Created by why on 9/20/14.//  Copyright (c) 2014 why. All rights reserved.//import UIKit/***  新聞*/class NewsViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {    @IBOutlet weak var newsTableView: UITableView!        var refreshControl = UIRefreshControl()        var dataArray:[AnyObject] = [AnyObject]()        override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view.        self.automaticallyAdjustsScrollViewInsets = false                //添加重新整理        refreshControl.addTarget(self, action: "refreshData", forControlEvents: UIControlEvents.ValueChanged)        refreshControl.attributedTitle = NSAttributedString(string: "鬆開後自動重新整理")        newsTableView.addSubview(refreshControl)        refreshData()    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()        // Dispose of any resources that can be recreated.    }        // 重新整理資料    func refreshData() {        let bquery = BmobQuery(className: "News")        bquery.findObjectsInBackgroundWithBlock({array, error in            self.dataArray = array            self.newsTableView.reloadData()            self.refreshControl.endRefreshing()        })    }    // MARK: - UITableViewDataSource    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        return dataArray.count;    }        func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {                let cell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "newsCell")                let obj: BmobObject = dataArray[indexPath.row] as BmobObject           cell.textLabel?.text = obj.objectForKey("title") as? String                       let dateFormatter = NSDateFormatter()        dateFormatter.dateFormat = "yyyy年 MM月 dd日"        let str = dateFormatter.stringFromDate(obj.createdAt)        cell.detailTextLabel?.text = str        return cell;    }                    /*    // MARK: - Navigation    // In a storyboard-based application, you will often want to do a little preparation before navigation    override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {        // Get the new view controller using segue.destinationViewController.        // Pass the selected object to the new view controller.    }    */}

[iOS] 使用UIRefreshControl 實現 UITableView下拉重新整理（Swift版本）