Question

我从一个网址获取一些数据并尝试在我的表格视图中显示我有三个按钮名称用于排序。这是我的button action方法：

@IBAction func sortByAZBtnPress(sender: AnyObject) { }
@IBAction func sortByRatingBtnPress(sender: AnyObject){ }
@IBAction func sortByRecentBtnPress(sender: AnyObject){ }

这是我的bussinesstype.swift模型类：

import UIKit

class BusinessData {

    var BusinessName: String?
    var Address: String?
    var Rating: Float?
    var ContactNumber: String?

    init(json: NSDictionary) {
        self.BusinessName = json["business_name"] as? String
        self.Address = json["location"] as? String
        self.Rating = json["__v"] as? Float
        self.ContactNumber = json["phone_no"] as? String
    }
}

这是我的viewcontroller.swift：

import UIKit    

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {        
    var isTapped:Bool?   // cell tap checking bool        
    var selectedIndex:NSIndexPath?        
    @IBOutlet weak var RightMenu: UIView!        
    @IBOutlet weak var tableView: UITableView!   // UITable view declaration       
    var arrDict = [BusinessData]()   // array to store the value from json

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        self.jsonParsingFromURL()  // call the json method

        // nib for custom cell (table view)
        let nib = UINib(nibName:"customCell", bundle: nil)
        tableView.registerNib(nib, forCellReuseIdentifier: "cell")            
        indicator = UIActivityIndicatorView(frame: CGRectMake(0, 0, 90, 90))
        indicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.Gray
        indicator.center = self.view.center
        indicator.color = UIColor .redColor()
        self.view.addSubview(indicator)
    }

    override func viewWillAppear(animated: Bool) {
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "searchMethod:", name: "search", object: nil);
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "endSearch", name: "endSearch", object: nil);
    }

    // web services method
    func jsonParsingFromURL ()
    {
        let url:NSURL = NSURL(string: "http://sample url/Fes?current_location=toronto&token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyIkX18")!            
        if let JSONData = NSData(contentsOfURL: url)
        {
            if let json = (try? NSJSONSerialization.JSONObjectWithData(JSONData, options: [])) as? NSDictionary
            {
                if let reposArray = json["data"] as? [NSDictionary]
                {

                    for item in reposArray
                    {
                        let itemObj = item as? Dictionary<String,AnyObject>

                        let b_type = itemObj!["business_type"]?.valueForKey("type")                            

                        if (b_type as? String == "Taxis")
                        {                                
                            arrDict.append(BusinessData(json: item))                                
                        }
                    }
                }                    
            }
        }                    
    }

    // number of rows
    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        return 1
    }

    // height for each cell
    func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat
    {
        return cellSpacingHeight
    }

    // calling each cell based on tap and users ( premium / non premium )
    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
    {
        let cell:customCell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! customCell            
         cell.vendorName.text = arrDict[indexPath.section].BusinessName
            cell.vendorAddress.text = arrDict[indexPath.section].Address
            cell.VendorRating.rating = arrDict[indexPath.section].Rating!

        return cell
    }

    // MARK: Sort Method

    @IBAction func sortByRevBtnPress(sender: AnyObject)
    {            
        self.indicator.startAnimating()
        self.indicator.hidden = false
        RightMenu.hidden = true

        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (Int64)(1 * NSEC_PER_SEC)), dispatch_get_main_queue()){
            self.indicator.stopAnimating()
            self.indicator.hidden = true                
        };
        self.tableView.reloadData() 
    }        

    @IBAction func sortByAZBtnPress(sender: AnyObject)
    {
        RightMenu.hidden = true         
    }

    @IBAction func sortByRatingBtnPress(sender: AnyObject)
    {            
        RightMenu.hidden = true            
    }

    @IBAction func sortByRecentBtnPress(sender: AnyObject)
    {
        RightMenu.hidden = true        
    }
}

如何对表格视图business_name中的值进行排序？

已更新：

BusinessData.sortUsingComparator { (dict1, dict2) -> NSComparisonResult in        
    if let name1 = dict1["business_name"] as? String, name2 = dict2["business_name"] as? String
    {
        return name1.compare(name2)
    }        
    return .OrderedAscending
}
self.tableView.reloadData()

Answer 1

排序var arrDict: [BusinessData]：

按商家名称

A-＆GT; Z：

arrDict.sort({ $0.BusinessName < $1.BusinessName })

Z-＆gt;一种：

arrDict.sort({ $0.BusinessName > $1.BusinessName })

评分

arrDict.sort({ $0.Rating < $1.Rating })

顺便说一下，按照惯例，Rating和BusinessName等变量名称应为小写。

如何从A-z对表格视图进行排序？

1 个答案: