Swift 爬行篇 UITableView

UITableView

就是表格，但是只有行没有列

创建格式有Plain和Group

而实现函数则有两个代理

delegate， 处理tableview中的逻辑关系

dataSource ，资源数据，用来插入删除等功能

1.创建

设置全局变量

    var _MyTableView : UITableView?    //全局的Tableview
    var leftBtn:UIButton?              //左边按钮，用于删除等操作
    var rightButtonItem:UIBarButtonItem?  //右边按钮，用于添加
    var items = ["武汉","上海","北京","深圳","广州","重庆","香港","台海","天津"]

 /*重用机制
    当表行滑出屏幕时讲其UITableViewCell放入到重用队列中
    当表行重新划入屏幕时，则将其UITableViewCell从重用队列中取出来
    由此减少每次对生成和施放内存的操作
    */
    func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{
       let cellid = "my cellid"  //tableview行的标志
       var cell: UITableViewCell? = tableView.dequeueReusableCellWithIdentifier(cellid,forIndexPath: indexPath)//获取行标志
       if (cell == nil){
            cell = UITableViewCell(style:.Default,reuseIdentifier: cellid) //空的话则重新创建一个，cellid表示新创建的UITableViewCell
       }
       cell!.textLabel?.text = self.items[indexPath.row]
       cell!.imageView?.image = UIImage(named: "green.png")
       return cell!  //返回
    }

  //父类的初始化函数
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let Rc:CGRect = self.view.bounds  
        _MyTableView = UITableView(frame: Rc,style:UITableViewStyle.Plain)
        _MyTableView!.delegate = self
        _MyTableView!.dataSource = self
        //setupLeftBarButtonItem()
        setupRightBarButtonItem()
        self.view.addSubview(_MyTableView!)
    }

 //返回表中的数量
    func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int{
        return items.count
    }

  //设置点击事件
    func tableView(tableView: UITableView,didSelectRowAtIndexPath indexPath: NSIndexPath){
        //let alert: UIAlertController = UIAlertController(title: "提示",message: "你选择的是(self.dataArr[indexPath.row])",preferredStyle: UIAlertControllerStyle.Alert)
        //let okAction = UIAlertAction(title: "好的",style: UIAlertActionStyle.Default,handler: nil)
       // alert.addAction(okAction)
       // self.presentViewController(alert,animated: true,completion: nil)
    }

//加左边按钮
    func setupLeftBarButtonItem()
    {
        leftBtn = UIButton(type: UIButtonType.Custom )
        self.leftBtn!.frame = CGRectMake(0,50,40)
        self.leftBtn?.setTitleColor(UIColor.redColor(),forState: UIControlState.Normal)
        self.leftBtn?.setTitle("Edit",forState: UIControlState.Normal)
        self.leftBtn!.tag = 100
        self.leftBtn?.addTarget(self,action: "leftBarButtonItemClicked",forControlEvents: UIControlEvents.TouchUpInside)
        let barButtonItem = UIBarButtonItem(customView: self.leftBtn!)
        self.navigationItem.leftBarButtonItem = barButtonItem
    }
    
    //左边按钮事件
    func leftBarButtonItemClicked()
    {
        print("leftBarButton")
        if (self.leftBtn!.tag == 100)
        {
            self._MyTableView?.setEditing(true,animated: true)
            self.leftBtn!.tag = 200
            self.leftBtn?.setTitle("Done",forState: UIControlState.Normal)
            //将增加按钮设置不能用
            self.rightButtonItem!.enabled=false
        }
        else
        {
            //恢复增加按钮
            self.rightButtonItem!.enabled=true
            self._MyTableView?.setEditing(false,animated: true)
            self.leftBtn!.tag = 100
            self.leftBtn?.setTitle("Edit",forState: UIControlState.Normal)
        }
        
    }
    //加右边按钮
    func setupRightBarButtonItem()
    {
        self.rightButtonItem = UIBarButtonItem(title: "Add",style: UIBarButtonItemStyle.Plain,target: self,action: "rightBarButtonItemClicked")
        self.navigationItem.rightBarButtonItem = self.rightButtonItem
        
    }
    //增加事件
    func rightBarButtonItemClicked()
    {
         print("rightBarButton")
        let row = self.items.count
        let indexPath = NSIndexPath(forRow:row,inSection:0)
        //self.items.append("杭州")
        self._MyTableView?.insertRowsAtIndexPaths([indexPath],withRowAnimation: UITableViewRowAnimation.Left)
        
        
    }

初始化时将风格设置为Group，并且在设置cell名称是应该使用多个数组

<pre name="code" class="plain"><p class="p1"><span class="s1">var</span><span class="s2"> items = [[</span><span class="s3">"</span><span class="s4">武汉</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">上海</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">北京</span><span class="s3">"</span><span class="s2">],[</span><span class="s3">"</span><span class="s4">深圳</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">广州</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">重庆</span><span class="s3">"</span><span class="s2">],[</span><span class="s3">"</span><span class="s4">香港</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">台海</span><span class="s3">"</span><span class="s2">,</span><span class="s3">"</span><span class="s4">天津</span><span class="s3">"</span><span class="s2">]]</span></p>

self.tableView=UITableView(frame:self.view.frame,style:UITableViewStyle.Grouped)

设置table的数量和每个table的cell数量

 //总行数
    func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int{
        return self.items[section].count - 1
    }
    func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        return items.count
    }

 func tableView(tableView: UITableView,titleForHeaderInSection section: Int) -> String?{
        return items[section][0]
    }

（编辑：李大同）

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