swift学习六天 项目实战－知乎日报之UITabelView使用

这里附上代码下载地址:

    http://download.csdn.net/detail/guchengyunfeng/7989139

上篇写了接口部分,现在来开始开发界面部分.

界面开发的大致思路跟使用OC的时候差不多,感觉就是将OC的语法用swift翻译 一遍，有什么API不会的可以直接进去查看属性,方法和委托。

先看界面的效果图

首先开始自定义一个cell
选中File->New File

选中Source->swift File

将名称命名为NewsCell，这样就新建了一个NewsCell.swift文件

然后再选中File->New File

选择User Interface->View

设备选择iphone

命名为NewsCell

于是我们得到了两个文件NewsCell.swift和NewsCell.xib

下面我们开始布局NewsCell.xib，我们要实现这种效果

tableviewcell里面要放置一个UILabel和一个UIImageView

于是我们在自定义tableviewcell里面布局如下

我们在NewsCell.swift和NewsCell.xib两个文件里面操作

我们得到的NewsCell.swift的文件如下

import Foundation
import UIKit

class NewsCell:UITableViewCell{

    @IBOutlet var NImg : UIImageView

    @IBOutlet var NLabContent : UILabel

}

现在完成了自定义的TabelViewCell

下面演示如何在代码中使用NewsCell

  func tableView(tableView: UITableView?, cellForRowAtIndexPath indexPath: NSIndexPath?) -> UITableViewCell? {
        
        var cell = tableView?.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as? NewsCell
        var index = indexPath!.row
        var data = self.jsonArrStories[index] as NSDictionary
        
        var sTitle=data.objectForKey("title") as String
        cell!.NLabContent.text=sTitle
        var arrImgURL=data.objectForKey("images") as NSArray
        var imagURL=arrImgURL[0] as String
        println("imageURL:\(imagURL)")
        cell!.NImg.setImage(imagURL,placeHolder: UIImage(named: "001p9BkFgy6KqjPYZg74b&690.jpeg"))
        
        return cell
    }

我们对比之前用OC开发的时候的代码（随便拷贝一份过来的）

static NSString *CustomCellIdentifier = @"CustomCellIdentifier";
    
    static BOOL nibsRegistered = NO;
    if (!nibsRegistered) {
        UINib *nib = [UINib nibWithNibName:@"CustomCell" bundle:nil];
        [tableView registerNib:nib forCellReuseIdentifier:CustomCellIdentifier];
        nibsRegistered = YES;
    }
    
    CustomCell *cell = [tableView dequeueReusableCellWithIdentifier:CustomCellIdentifier];
 
    
    NSUInteger row = [indexPath row];
    NSDictionary *rowData = [self.dataList objectAtIndex:row];
    
    cell.name = [rowData objectForKey:@"name"];
    cell.dec = [rowData objectForKey:@"dec"];
    cell.loc = [rowData objectForKey:@"loc"];
    cell.image = [imageList objectAtIndex:row];
     
    return cell;

大致思路是差不多，只不过语法方面有些差异，直接翻译过来就好了

下面我们初始化TabelView

  func setupViews()
    {
        //tableView
       tabNewList.delegate=self
       tabNewList.dataSource=self
       var nib = UINib(nibName:"NewsCell", bundle: nil)
       self.tabNewList?.registerNib(nib, forCellReuseIdentifier: identifier)
        
        //scrollView
       scrollNewList.delegate=self
       var pageCount=jsonArrtop_stories.count
       println("pageCount\(pageCount)")
       scrollNewList.contentSize=CGSizeMake(CGFloat(pageCount*320), CGFloat(140))
       scrollNewList.pagingEnabled=true
       self.addImgsToScroll(scrollNewList, arrStory_Top: self.jsonArrtop_stories)
        
        //pageConrol
       pageNewList.numberOfPages=pageCount
       pageNewList.currentPage=1
        
       var dic1=jsonArrtop_stories.objectAtIndex(0) as NSDictionary
       var title1=dic1["title"] as String
       labScrollTitle.text=title1
        
        //RefreshControl
        self.addRefreshView("PullUpView")
       // self.addRefreshView("PullDownView")
    }

然后实现几个tableview的接口

 func numberOfSectionsInTableView(tableView: UITableView?) -> Int {
        // #warning Potentially incomplete method implementation.
        // Return the number of sections.
        return 1
    }
    
    
    func tableView(tableView: UITableView!, heightForRowAtIndexPath indexPath: NSIndexPath!) -> CGFloat
    {
       return 104
    }
    
    func tableView(tableView: UITableView?, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete method implementation.
        // Return the number of rows in the section.
        return jsonArrStories.count
    }
    
    
    func tableView(tableView: UITableView?, cellForRowAtIndexPath indexPath: NSIndexPath?) -> UITableViewCell? {
        
        var cell = tableView?.dequeueReusableCellWithIdentifier(identifier, forIndexPath: indexPath) as? NewsCell
        var index = indexPath!.row
        var data = self.jsonArrStories[index] as NSDictionary
        
        var sTitle=data.objectForKey("title") as String
        cell!.NLabContent.text=sTitle
        var arrImgURL=data.objectForKey("images") as NSArray
        var imagURL=arrImgURL[0] as String
        println("imageURL:\(imagURL)")
        cell!.NImg.setImage(imagURL,placeHolder: UIImage(named: "001p9BkFgy6KqjPYZg74b&690.jpeg"))
        
        return cell
    }
    
    func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!)
    {
        var index = indexPath!.row
        var data = self.jsonArrStories[index] as NSDictionary
        var aId : Int=data.objectForKey("id") as Int
        var board:UIStoryboard = UIStoryboard(name:"Main", bundle:nil);
        var detailConrol=board.instantiateViewControllerWithIdentifier("KDNewsDetailController") as KDNewsDetailController
        detailConrol.aId=aId
        println("detailConrol.id\(aId)")
       // self.showViewController(detailConrol, sender: self)
       self.presentModalViewController(detailConrol, animated: true)
    }

ok，到这里就完成了这种效果，下一篇介绍使用UIScollView和UIPageConrol以及定时器实现上面滚动的效果

这里附上代码下载地址:

    http://download.csdn.net/detail/guchengyunfeng/7989139