去年写过一个OC版本的瀑布流Demo《【iOS】UITableView实现的瀑布流效果》。
接触Swift一段时间了,今天就是用Swift再写了一个瀑布流的Demo。原理是一样的这里不再赘述。在写这个Demo的过程中是用到了NSURLConnection的异步网络请求和GCD做了一个图片的异步加载,没有做图片的缓存,所以是用起来有些卡。cell是带左滑删除视图的,删除功能是没有实现的。
效果图:
Demo工作流程:
1.制作三个tableiView
3.数据封装成模型
4.reload tableView
图片数据模型
代码:
PICModel.swift
import UIKit class PICModel: NSObject { var album_id : NSNumber? var brand_name : String? var created_at : NSNumber? var height : NSNumber? var id : String? var new_height : NSNumber? var new_width : NSNumber? var pic_url_d : String? var pic_url_x : String? var price : String? var title : String? var width : NSNumber? }ViewController.swift
// // ViewController.swift // 瀑布流-Swift // // Created by zhuming on 16/3/29. // Copyright © 2016年 zhuming. All rights reserved. // import UIKit class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UIAlertViewDelegate{ var tableView1 : UITableView? var tableView2 : UITableView? var tableView3 : UITableView? var indexPath : NSIndexPath? var menbers1 = [NSDictionary]() var menbers2 = [NSDictionary]() var menbers3 = [NSDictionary]() var PICModelArray1 = [PICModel]() var PICModelArray2 = [PICModel]() var PICModelArray3 = [PICModel]() var dataArray = ["1","2","3","4","5","6","7","8","9","10","11","12"] let urlString1 = "http://itugo.com/client/ios/api/getpiclist?_version=20140117.2.5.1&_req_from=oc&_source=ios&type=&_uuid=efe47094e00109db8c28cf0ae9b607b9&max=&tag=&_promotion_channel=App%20Store&_platform=iPhone&sort=new&from=tag&_uiid=2FF998CF0D2A40E7AF6F8FAFB8F57538&_net=wifi&min=0"; let urlString2 = "http://itugo.com/client/ios/api/getpiclist?_version=20140117.2.5.1&_req_from=oc&_source=ios&type=accessary&_uuid=efe47094e00109db8c28cf0ae9b607b9&max=&tag=&_promotion_channel=App%20Store&_platform=iPhone&sort=new&from=tag&_uiid=2FF998CF0D2A40E7AF6F8FAFB8F57538&_net=wifi&min=0"; let urlString3 = "http://itugo.com/client/ios/api/getpiclist?_version=20140117.2.5.1&_req_from=oc&_source=ios&type=shoes&_uuid=efe47094e00109db8c28cf0ae9b607b9&max=&tag=&_promotion_channel=App%20Store&_platform=iPhone&sort=new&from=tag&_uiid=2FF998CF0D2A40E7AF6F8FAFB8F57538&_net=wifi&min=0"; override func viewDidLoad() { super.viewDidLoad() self.initTableView() self.requestData(urlString1) self.requestData(urlString2) self.requestData(urlString3) // Do any additional setup after loading the view,typically from a nib. } /** 初始化表格 */ func initTableView() { self.tableView1 = UITableView.init(frame: CGRectMake(5,20,100,548)) self.tableView1!.delegate = self self.tableView1!.dataSource = self; self.tableView1?.showsVerticalScrollIndicator = false self.tableView1!.registerNib(UINib(nibName:"PBTableViewCell",bundle:nil),forCellReuseIdentifier:"PBTableViewCell") self.view .addSubview(self.tableView1!) self.tableView2 = UITableView.init(frame: CGRectMake(110,548)) self.tableView2!.delegate = self self.tableView2!.dataSource = self; self.tableView2?.showsVerticalScrollIndicator = false self.tableView2!.registerNib(UINib(nibName:"PBTableViewCell",forCellReuseIdentifier:"PBTableViewCell") self.view .addSubview(self.tableView2!) self.tableView3 = UITableView.init(frame: CGRectMake(215,548)) self.tableView3!.delegate = self self.tableView3!.dataSource = self; self.tableView3?.showsVerticalScrollIndicator = false self.tableView3!.registerNib(UINib(nibName:"PBTableViewCell",forCellReuseIdentifier:"PBTableViewCell") self.view .addSubview(self.tableView3!) } // 网络请求数据 func requestData(urlString : String){ let url = NSURL(string: urlString) let request = NSURLRequest(URL: url!) NSURLConnection.sendAsynchronousRequest(request,queue: NSOperationQueue.mainQueue()) { (response:NSURLResponse?,data:NSData?,error:NSError?) in let jsonResult:NSDictionary = try! NSJSONSerialization.JSONObjectWithData(data!,options: NSJSONReadingOptions.MutableContainers) as! NSDictionary let dice:NSDictionary = (jsonResult["data"] as? NSDictionary)! if (url!.isEqual(NSURL(string: self.urlString1))){ self.menbers1 = dice["data"] as! Array print("self.menbers = \(self.menbers1.count)") for value in self.menbers1{ let dice:NSDictionary = value self.PICModelArray1.append(self .makePICModel(dice)) } print("PICModelArray = \(self.PICModelArray1.count)") self.tableView1?.reloadData() } if (url!.isEqual(NSURL(string: self.urlString2))){ self.menbers2 = dice["data"] as! Array print("self.menbers = \(self.menbers2.count)") for value in self.menbers2{ let dice:NSDictionary = value self.PICModelArray2.append(self .makePICModel(dice)) } print("PICModelArray = \(self.PICModelArray2.count)") self.tableView2?.reloadData() } if (url!.isEqual(NSURL(string: self.urlString3))){ self.menbers3 = dice["data"] as! Array print("self.menbers = \(self.menbers3.count)") for value in self.menbers3{ let dice:NSDictionary = value self.PICModelArray3.append(self .makePICModel(dice)) } print("PICModelArray = \(self.PICModelArray3.count)") self.tableView3?.reloadData() } } } // 数据封装成模型 func makePICModel(dice : NSDictionary) -> PICModel{ let model = PICModel.init() model.album_id = dice["album_id"] as? NSNumber model.brand_name = dice["brand_name"] as? String model.created_at = dice["created_at"] as? NSNumber model.height = dice["height"] as? NSNumber model.id = dice["id"] as? String model.new_height = dice["new_height"] as? NSNumber model.new_width = dice["new_width"] as? NSNumber model.pic_url_d = dice["pic_url_d"] as? String model.pic_url_x = dice["pic_url_x"] as? String model.price = dice["price"] as? String model.title = dice["title"] as? String model.width = dice["width"] as? NSNumber return model } // UITableViewDelegate,UITableViewDataSource func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int { if tableView.isEqual(self.tableView1) { return self.PICModelArray1.count } if tableView.isEqual(self.tableView2) { return self.PICModelArray2.count } if tableView.isEqual(self.tableView3) { return self.PICModelArray3.count } return 10; } func numberOfSectionsInTableView(tableView: UITableView) -> Int { return 1; } // 设置cell的高度 func tableView(tableView: UITableView,heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { if tableView.isEqual(self.tableView1) { let model = self.PICModelArray1[indexPath.row] as PICModel let height = model.new_height as! CGFloat return height*0.5 } if tableView.isEqual(self.tableView2) { let model = self.PICModelArray2[indexPath.row] as PICModel let height = model.new_height as! CGFloat return height*0.5 } if tableView.isEqual(self.tableView3) { let model = self.PICModelArray3[indexPath.row] as PICModel let height = model.new_height as! CGFloat return height*0.5 } return 10; } func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { let identify:String = "PBTableViewCell" let cell:PBTableViewCell = tableView.dequeueReusableCellWithIdentifier(identify) as! PBTableViewCell cell.selectionStyle = UITableViewCellSelectionStyle.None var model:PICModel! if tableView.isEqual(self.tableView1) { model = self.PICModelArray1[indexPath.row] as PICModel } if tableView.isEqual(self.tableView2) { model = self.PICModelArray2[indexPath.row] as PICModel } if tableView.isEqual(self.tableView3) { model = self.PICModelArray3[indexPath.row] as PICModel } cell.titleLabel?.text = model.title // 异步加载图片 dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0)) { let data = NSData.init(contentsOfURL: NSURL(string: model.pic_url_x!)!) dispatch_async(dispatch_get_main_queue(),{ cell.backImageView?.image = UIImage.init(data: data!) }) } return cell } // 三个TableView 关联滚动 func scrollViewDidScroll(scrollView: UIScrollView) { if scrollView.isEqual(self.tableView1) { self.tableView2?.setContentOffset((self.tableView1?.contentOffset)!,animated: false) self.tableView3?.setContentOffset((self.tableView1?.contentOffset)!,animated: false) } if scrollView.isEqual(self.tableView2) { self.tableView1?.setContentOffset((self.tableView2?.contentOffset)!,animated: false) self.tableView3?.setContentOffset((self.tableView2?.contentOffset)!,animated: false) } if scrollView.isEqual(self.tableView3) { self.tableView1?.setContentOffset((self.tableView3?.contentOffset)!,animated: false) self.tableView2?.setContentOffset((self.tableView3?.contentOffset)!,animated: false) } } func tableView(tableView: UITableView,didSelectRowAtIndexPath indexPath: NSIndexPath) { print("row = \(indexPath.row)") } func tableView(tableView: UITableView,titleForDeleteConfirmationButtonForRowAtIndexPath indexPath: NSIndexPath) -> String? { return "删除" } func tableView(tableView: UITableView,commitEditingStyle editingStyle: UITableViewCellEditingStyle,forRowAtIndexPath indexPath: NSIndexPath){ self.indexPath = indexPath self.showAlView(indexPath) } // UIAlertView的使用 func showAlView(indexPath :NSIndexPath){ let alert = UIAlertView.init(title: "警告",message: "确定删除第\(indexPath.row + 1)行",delegate: self,cancelButtonTitle: "取消",otherButtonTitles: "确定") alert.show() } func alertView(alertView: UIAlertView,clickedButtonAtIndex buttonIndex: Int) { if (buttonIndex == 0) { NSLog("取消"); } else{ NSLog("删除\(self.indexPath!.row)") } } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }
写在最后:
可能是写的Swift的代码写少了,感觉写起来没有OC顺手,然后自己慢慢体会……O(∩_∩)O哈哈~