Apple Swift Programming: 9月 2015

2015年9月28日星期一

新增檔案 Create a New File

Purpose: 

探討如何以 Swift 建立新的檔案。

Code:


//
//  ViewController.swift
//  FileBuildUpDemo
//
//  Created by Elvis Meng on 2015/9/28.
//  Copyright © 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let fileManager = NSFileManager.defaultManager()
        let directory = NSHomeDirectory().stringByAppendingString("Documents/data")
        do {
            try fileManager.createDirectoryAtPath(directory, 
                                                  withIntermediateDirectories: true, 
                                                  attributes: nil)
            print("directory build up success")
        }
        catch {
            print("directory build up fail")
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


Test:



當 fileManager.createDirectoryAtPath(:directory, withIntermediateDirectories:, attributes:) 的 withIntermediateDirectories 設為 false 時，若此檔案已建立，則不覆蓋原有檔案：



後記:

新版本 Xcode 7.0 只支援 fileManager.createDirectoryAtPath(:directory, withIntermediateDirectories:, attributes:)，不支援 fileManager.createDirectoryAtPath(:directory, withIntermediateDirectories:, attributes:, error:)，且呼叫改採用 throws 方式來呼叫，即程式要用 do { try func XXX } catch { ... } 的語法。

參考:

1.NSFileManager, https://developer.apple.com/library/prerelease/watchos/documentation/Cocoa/Reference/Foundation/Classes/NSFileManager_Class/

2015年9月25日星期五

專案中的 Bundle ID


開發 App 時會啟動一個專案 Project，而除了專案的名稱之外，我們還要給這專案一個很特別的 Bundle ID。此 Bundle ID 是由 Product Name 與 Domain Name 組成。為何需要此 Bundle ID 呢? 因上架到 App Store 的應用 App 相當多，而 Apple 設計要求每個 App 要有自己的 Bundle ID，而此 Bundle ID 在 App Store 是唯一的，就像是我們的身分證一樣。

當 User 下載安裝你的 App，安裝後會在其 iPhone / iPad 上建立一個專屬的目錄，用來存放你的 App 執行檔，圖片，音樂等，同時存放資料。別人的 App 無法存取你專屬目錄下的資料，這是 Apple 以 Sandbox 概念，來管理資料的安全性。

App 安裝後，每個 App 也會有自己的目錄結構，每個目錄各自放不同的資料方便管理。 



Apple 在資料的管理上採用 Container 概念，即每一個 Container 各司其既定的功能。 例如: Bundle Container。在這 Container 下，存放我們在 Xcode 所開發的 Code，Resource，與相關 Supporting Files。



參考:

1. File System Basics, https://developer.apple.com/library/prerelease/ios/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW2

2015年9月23日星期三

取得目前定位的位置

 
CLLocationManager 直接繼承 NSObject，在程式中要用 import CoreLocation 取得其相關工具 (元件)



CLLocationManager 的使用方式如下:



生成 CLLocationManager 這物件，並指定其代理 delegate:

locationManager = CLLocationManager()
locationManager.delegate = self


與 Core Location 這類別相關的常數 Constant:



所以，我們在此只設定取到位置需要的精準度:



locationManager.desireAccuracy = kCLLocatinAccruacyBest

取得使用 Core Location 授權:



在此選用 requestAlwaysAuthorization() 方法:

locationManager.requestAlwaysAuthorization()



如何取得目前的座標位置?



新增專案：



程式碼：


//
//  ViewController.swift
//  FindLocationDemo
//
//  Created by Elvis Meng on 2015/9/23.
//  Copyright © 2015年 Elvis Meng. All rights reserved.
//

import UIKit
import CoreLocation

class ViewController: UIViewController, CLLocationManagerDelegate{
    
    var locationManager: CLLocationManager!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        locationManager = CLLocationManager()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestAlwaysAuthorization()
        locationManager.startUpdatingLocation()
        //locationManager.startUpdatingHeading()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func locationManager(manager: CLLocationManager,
    didUpdateLocations locations: [CLLocation]) {
        let curLocation:CLLocation = locations[0]
        print("test")
        print("latitude = \(curLocation.coordinate.latitude)")
        print("longitude = \(curLocation.coordinate.longitude)")
    
    }

    override func viewDidDisappear(animated: Bool) {
        locationManager.stopUpdatingLocation()
    }
}


測試環境設定：



新增 2 個環境變數：




開始測試：

允許定位：



此時新增 Privacy



檢查 Location Service 是否開啟 ON:



設定 Apple 已預設城市座標，選擇 Tokyo, Japan：



測試結果：



參考:

1. CLLocationManager, 
https://developer.apple.com/library/prerelease/watchos/documentation/CoreLocation/Reference/CLLocationManager_Class/index.html#//apple_ref/occ/cl/CLLocationManager

2. Core Location and Map Kit: Bringing Your Own Maps [Voices That Matter: iPhone 2010], http://www.slideshare.net/invalidname/adamson-bringingyourownmaps

3. Reduce Location Accuracy and Duration, https://developer.apple.com/library/prerelease/ios/documentation/Performance/Conceptual/EnergyGuide-iOS/LocationBestPractices.html

4. CLHeading, https://developer.apple.com/library/ios/documentation/CoreLocation/Reference/CLHeading_Class/

5. About Location Services and Maps, https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/LocationAwarenessPG/Introduction/Introduction.html

6. Getting the User’s Location, https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/LocationAwarenessPG/CoreLocation/CoreLocation.html#//apple_ref/doc/uid/TP40009497-CH2-SW1

7. Core Location Constants Reference, https://developer.apple.com/library/prerelease/tvos/documentation/CoreLocation/Reference/CoreLocationConstantsRef/

8. CLLocationManagerDelegate, https://developer.apple.com/library/prerelease/watchos/documentation/CoreLocation/Reference/CLLocationManagerDelegate_Protocol/index.html#//apple_ref/occ/intf/CLLocationManagerDelegate

2015年9月21日星期一

Random Generator 亂數產生器


在 Apple 的官方網站 [1]上描述 arc4random_uniform() 這亂數產生器：

u_int32_t arc4random_uniform(u_int32_t upper_bound);

arc4random_uniform() 
will return a uniformly distributed random number less than upper_bound.

arc4random_uniform() 
is recommended over constructions like ``arc4random() % upper_bound'' as it avoids
"modulo bias" when the upper bound is not a power of two.



程式：


//
//  ViewController.swift
//  RandomGeneratorDemo
//
//  Created by Elvis Meng on 2015/9/21.
//  Copyright © 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let n:UInt32 = UInt32(arc4random_uniform(100)+1)
        print("n = \(n)")
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


測試：



參考：

1. ARC4RANDOM(3), https://developer.apple.com/library/prerelease/mac/documentation/Darwin/Reference/ManPages/man3/arc4random_uniform.3.html

查看手機目前使用狀態


查看手機名稱，iOS 版本，型號等資訊：



亦可查看手機目前電池使用狀況：



而電池的使用狀態由此得知：



目前系統提供下列電池的狀態：



App 建立步驟：

1. 新增 Single View App





//
//  ViewController.swift
//  DeviceStatus
//
//  Created by Elvis Meng on 2015/9/16.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        UIDevice.currentDevice().batteryMonitoringEnabled = true
        println("Model Name: \(UIDevice.currentDevice().model)")
        println("Batery Open? \(UIDevice.currentDevice().batteryMonitoringEnabled)")
        println("Battery Level: \(UIDevice.currentDevice().batteryLevel)")
        println("Battery State: \(UIDevice.currentDevice().batteryState.hashValue)")
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


測試：



後記：

注意到沒？為何 iDevice 註冊後，設定 .batteryMonitoringEnabled = true，但 Batery Open? 的值仍為 false。這是 Bug? 我懷疑也相信。

參考：

1. UIDevice, https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIDevice_Class/

2.  iOS SDK详解之UIDevice（系统版本，设备型号...）, http://blog.csdn.net/Hello_Hwc/article/details/46326571

2015年9月15日星期二

類別間函數 Function 的呼叫

Purpose：

函數 Function 定義在 A 類別，而由 B 類別呼叫使用

Step:

1. 新增 Single View App



2. 在 AppDelegate.swift 實作新函數：myFun()


//  AppDelegate.swift
//  CallFunctionOutside
//
//  Created by Elvis Meng on 2015/9/15.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func myFun(#name:String, sex:String)->() {
        println("name: \(name), sex: \(sex)")
    }


3. 在 ViewController.swift 中實作，呼叫被定義在 AppDelegate.swift 中的新函數 myFun()


//
//  ViewController.swift
//  CallFunctionOutside
//
//  Created by Elvis Meng on 2015/9/15.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        var vcApp = UIApplication.sharedApplication().delegate as! AppDelegate
        vcApp.myFun(name: "Evis Meng", sex: "Male")        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


在此我們呼叫方法 .shareApplication  去獲得 app instance:



此時，呼叫這方法後，其返回值然為 UIApplication，這時呼叫其屬性 delegate



經過資料類別強制轉換成 AppDelegate 後，再接下來就是測試驗證了。


4. 驗證



參考：

1. UIApplication, https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UIApplication_Class/

第 7 個程式：導覽控制器 Navigator 與 Segue


1. 加入 Navigation Controller，以 Seque = Push 來連接 Navigation Controller 與 Table View Controller.

首先，點選 Table View Controller，然後點選 Editor > Embed In > Navigation Controller:



這時 Navigation Controller 被自動設定為 Initial View Controller，且連結 Table View Controller。

2. 加入 View Controller 這 UI，以 Segue = Push 來連接 Table View Controller (Source) 與 View Controller (Destination)

先新增 View Controller，之後在 Table View Controller 選取 Cell，然後按下 Control 鍵不放，拖曳至新的 View Controller 上，此時設定 Segue = Push：



點選後，新的 Segue 連接了 Table View Controller 與 View Controller:



3. 在這新的 View Controller 的 Destination View Controller 上，新增 Lable 以顯示 Table View 被選取後的資料



接著給這新的 Segue 一個 ID:



在這之前，我們整個 UI 算是完成，接下來我們要控制這些 UI 元件。

4. 然後新增此 UI 物件的類別，將此類別 Assign 到此 UI (即這 UI 與這 Class 關聯)

新增 View Controller 類別：



然後新增此 UI 物件的類別，將此類別 Assign 到此 UI (即這 UI 與這 Class 關聯)

然後，將此類別 Assign 到此 UI ：



5. 實作點選 Source Controller 上的 Cell後，在 Destination Controller 能顯示此資料：

點選 Destination Controller 上的 Label，並按 Control 鍵不放，拖曳至 Code 中：



Detail View Controller 的程式修改如下：



接下來處理 Table View 資料選取後，傳遞到 View Controller 再處理，傳遞方式是 Source View Controller 會呼叫 prepareForSegue 這方法：




６. 在 Source View Controller 實作 prepareForSegue，當選取資料時，資料能傳遞到 Destination Controller



測試：

Run 後顯示的 UI:



點選第一行資料 book，測試是否資料會傳遞到下一個 UI 畫面：



程式碼：

Table View Controller:


//
//  MyTableViewController.swift
//  SimpleTableViewControllerDemo
//
//  Created by Elvis Meng on 2015/9/6.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class MyTableViewController: UITableViewController, UITableViewDataSource, UITableViewDelegate {
    
    var vocabulary = ["book","pen","queen","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15"]

    override func viewDidLoad() {
        super.viewDidLoad()

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem()
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        // #warning Potentially incomplete method implementation.
        // Return the number of sections.
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete method implementation.
        // Return the number of rows in the section.
        return self.vocabulary.count
    }
   
    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        
        let cellIdentifier = "Cell"
        let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! UITableViewCell

        // Configure the cell...
        cell.textLabel?.text = vocabulary[indexPath.row]
        
        return cell
    }

    override func tableView(tableView: UITableView,
        didSelectRowAtIndexPath indexPath: NSIndexPath) {
            
            let cell: UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
            if cell.accessoryType == UITableViewCellAccessoryType.None {
                cell.accessoryType = UITableViewCellAccessoryType.Checkmark
            } else {
                cell.accessoryType = UITableViewCellAccessoryType.None
            }
            tableView.deselectRowAtIndexPath(indexPath, animated: true)
    }
 

    override func tableView(tableView: UITableView,
        didDeselectRowAtIndexPath indexPath: NSIndexPath) {
            let cell: UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
            if cell.accessoryType == UITableViewCellAccessoryType.None {
                cell.accessoryType = UITableViewCellAccessoryType.Checkmark
            } else {
                cell.accessoryType = UITableViewCellAccessoryType.None
            }
            tableView.deselectRowAtIndexPath(indexPath, animated: false)
    }

    
    override func tableView(tableView: UITableView,
        commitEditingStyle editingStyle: UITableViewCellEditingStyle,
        forRowAtIndexPath indexPath: NSIndexPath) {
            
            if editingStyle == .Delete {
                self.vocabulary.removeAtIndex(indexPath.row)
                //tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
                self.tableView.reloadData()
            } else if editingStyle == .Insert {
                self.vocabulary.insert("new", atIndex: indexPath.row)
                self.tableView.reloadData()
            }
    }

    override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
        
        var deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Delete",
            handler: {(action:UITableViewRowAction!,
            indexPath: NSIndexPath!) -> Void in
            
                self.vocabulary.removeAtIndex(indexPath.row)
                self.tableView.reloadData()
            
            }

        )
        
        let alertAction = UITableViewRowAction(style : UITableViewRowActionStyle.Default,title : "Share",
            handler : {(action:UITableViewRowAction!,
            indexPath: NSIndexPath!) -> Void in
                let alertController = UIAlertController(title:"My First App",
                    message:"Hello World",
                    preferredStyle: .Alert)
                let alertAction = UIAlertAction(title:"OK",
                    style: UIAlertActionStyle.Default,
                    handler:nil)
                alertController.addAction(alertAction)
                
                self.presentViewController(alertController,
                    animated: true,
                    completion: nil)
            }
        )
        
        return [deleteAction, alertAction]
    }
    
    


  /*
    // Override to support editing the table view.
    override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        if editingStyle == .Delete {
            // Delete the row from the data source
            tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
        } else if editingStyle == .Insert {
            // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
        }    
    }
*/

    /*
    // Override to support rearranging the table view.
    override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {

    }
    */

    /*
    // Override to support conditional rearranging of the table view.
    override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
        // Return NO if you do not want the item to be re-orderable.
        return true
    }
    */

    
    // 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.

        if segue.identifier == "detailSegue" {
            
            let indexPath = self.tableView.indexPathForSelectedRow()
            var destinationController = segue.destinationViewController as! DetailViewController
            destinationController.senderText = self.vocabulary[indexPath!.row]
            
        }
    }

}



Detail View Controller:


//
//  DetailViewController.swift
//  SimpleTableViewControllerDemo
//
//  Created by Elvis Meng on 2015/9/12.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class DetailViewController: UIViewController {

    @IBOutlet var word: UILabel!
    var senderText:String!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        
        self.word.text = senderText
   
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    

    /*
    // 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.
    }
    */

}


參考：

1. Segue Compatibility, https://developer.apple.com/library/prerelease/ios/recipes/xcode_help-IB_storyboard/Chapters/BackwardCompatibilityofActiveSegues.html

2. UIViewController，https://developer.apple.com/library/prerelease/tvos/documentation/UIKit/Reference/UIViewController_Class/

3. Implement Navigation, https://developer.apple.com/library/prerelease/ios/referencelibrary/GettingStarted/DevelopiOSAppsSwift/Lesson8.html

為何點選 Embed In 後，Navigation Controller 反白？

Problem:

要在 Table View Controller 前加一個 Navigation Controller，但想以 Editor > Embed In 加入時，發現功能反白，無法加入。

 

Solution:

你必須先點選 Table View Controller 這個 UI 畫面，然後再點選 Editor > Embed In > Navigation Controller：



Test:

注意：此新加入的 Navigation Controller 被自動設定為 Initial View Controller。

2015年9月10日星期四

第 6 個程式：Cell 上多重功能的製作: UITableViewRowAction


在 Cell 上我們可客製化 Cell，讓它除了 Delete 這功能外，還有其他功能可選。如何做? 我們要把新的功能 Action 加入 UITableViewRowAction 中。這函數 tableView(_:editActionsForRowAtIndexPath:) (New in tvos 9.0) 被定義在 UITableViewDelegate 這協定中:



也就是說我們要實作此協定:


override func tableView(_ tableView: UITableView,
editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
}

但，在此協定中我們又該如何把新的 Action 加入? 



我們依文件說明，來加入 Action:


override func tableView(tableView: UITableView, 
                        editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {      
        var deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, 
                                                title: "Delete",
                                                handler: {(action:UITableViewRowAction!,
                                                indexPath: NSIndexPath!) -> Void in          
                self.vocabulary.removeAtIndex(indexPath.row)
                self.tableView.reloadData()          
            }
        )
        
        let alertAction = UITableViewRowAction(style : UITableViewRowActionStyle.Default,
                                               title : "Share",
                                               handler : {(action:UITableViewRowAction!,
                                               indexPath: NSIndexPath!) -> Void in

                let alertController = UIAlertController(title:"My First App",
                                                        message:"Hello World",
                                                        preferredStyle: .Alert)
                let alertAction = UIAlertAction(title:"OK",
                                                style: UIAlertActionStyle.Default,
                                                handler:nil)
                alertController.addAction(alertAction)
                
                self.presentViewController(alertController,
                                           animated: true,
                                           completion: nil)
            }
        )      
        return [deleteAction, alertAction]
    }


呼! 寫到此，驗證結果:

1. 選取 Cell，然後向左滑，顯示 Share 與 Delete Button 



2. 按下 Share 按鈕



3. 在 Cell 顯示 8 的行，按下 Delete 按鈕



程式碼：

//
//  MyTableViewController.swift
//  SimpleTableViewControllerDemo
//
//  Created by Elvis Meng on 2015/9/6.
//  Copyright (c) 2015年 Elvis Meng. All rights reserved.
//

import UIKit

class MyTableViewController: UITableViewController, UITableViewDataSource, UITableViewDelegate {
    
    var vocabulary = ["book","pen","queen","1","2","3","4","5","6","7","8","9","10","11","12","13","14","15"]

    override func viewDidLoad() {
        super.viewDidLoad()

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem()
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        // #warning Potentially incomplete method implementation.
        // Return the number of sections.
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete method implementation.
        // Return the number of rows in the section.
        return self.vocabulary.count
    }
   
    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        
        let cellIdentifier = "Cell"
        let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! UITableViewCell

        // Configure the cell...
        cell.textLabel?.text = vocabulary[indexPath.row]
        
        return cell
    }

    override func tableView(tableView: UITableView,
        didSelectRowAtIndexPath indexPath: NSIndexPath) {
            
            let cell: UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
            if cell.accessoryType == UITableViewCellAccessoryType.None {
                cell.accessoryType = UITableViewCellAccessoryType.Checkmark
            } else {
                cell.accessoryType = UITableViewCellAccessoryType.None
            }
            tableView.deselectRowAtIndexPath(indexPath, animated: true)
    }
 

    override func tableView(tableView: UITableView,
        didDeselectRowAtIndexPath indexPath: NSIndexPath) {
            let cell: UITableViewCell = tableView.cellForRowAtIndexPath(indexPath)!
            if cell.accessoryType == UITableViewCellAccessoryType.None {
                cell.accessoryType = UITableViewCellAccessoryType.Checkmark
            } else {
                cell.accessoryType = UITableViewCellAccessoryType.None
            }
            tableView.deselectRowAtIndexPath(indexPath, animated: false)
    }

    
    override func tableView(tableView: UITableView,
        commitEditingStyle editingStyle: UITableViewCellEditingStyle,
        forRowAtIndexPath indexPath: NSIndexPath) {
            
            if editingStyle == .Delete {
                self.vocabulary.removeAtIndex(indexPath.row)
                //tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
                self.tableView.reloadData()
            } else if editingStyle == .Insert {
                self.vocabulary.insert("new", atIndex: indexPath.row)
                self.tableView.reloadData()
            }
    }

    override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [AnyObject]? {
        
        var deleteAction = UITableViewRowAction(style: UITableViewRowActionStyle.Default, title: "Delete",
            handler: {(action:UITableViewRowAction!,
            indexPath: NSIndexPath!) -> Void in
            
                self.vocabulary.removeAtIndex(indexPath.row)
                self.tableView.reloadData()
            
            }

        )
        
        let alertAction = UITableViewRowAction(style : UITableViewRowActionStyle.Default,title : "Share",
            handler : {(action:UITableViewRowAction!,
            indexPath: NSIndexPath!) -> Void in
                let alertController = UIAlertController(title:"My First App",
                    message:"Hello World",
                    preferredStyle: .Alert)
                let alertAction = UIAlertAction(title:"OK",
                    style: UIAlertActionStyle.Default,
                    handler:nil)
                alertController.addAction(alertAction)
                
                self.presentViewController(alertController,
                    animated: true,
                    completion: nil)
            }
        )
        
        return [deleteAction, alertAction]
    }
    

  /*
    // Override to support editing the table view.
    override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
        if editingStyle == .Delete {
            // Delete the row from the data source
            tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
        } else if editingStyle == .Insert {
            // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
        }    
    }
*/

    /*
    // Override to support rearranging the table view.
    override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {

    }
    */

    /*
    // Override to support conditional rearranging of the table view.
    override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
        // Return NO if you do not want the item to be re-orderable.
        return true
    }
    */

    /*
    // 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.
    }
    */

}



參考：

1.UITableViewRowAction, https://developer.apple.com/library/prerelease/tvos/documentation/UIKit/Reference/UITableViewRowAction_class/