如何使用从Swift 3中滑块中选择的JOSN数据更新tableviewcell？

Question

我需要使用滑块的值更新单元格。滑块从分析的JSON数据中提取数据。

如何将显示JSON数据从滑块添加到tableview单元格？

这里是我当前的代码：

import UIKit 

class SliderViewController: UIViewController, UITableViewDataSource, UITableViewDelegate { 

@IBOutlet weak var sliderTableView: UITableView! 
@IBOutlet weak var styleSlider: UISlider! 
@IBOutlet weak var abvSlider: UISlider! 
@IBOutlet weak var ibuSlider: UISlider! 
@IBOutlet weak var testLabel: UILabel! 

@IBAction func styleSlider(_ sender: Any) { 
// LABEL CREATED FOR TESTING PURPOSES ONLY 
    testLabel.text = String(Int(styleSlider.value)) 
} 

var beersMatch = [Beer]() 
var filteredBeersMatch = [Beer]() 
var filters = [BeerStyle]() 
var selectedCells: [Bool] = [] 
let apiManager = APIManager() 

override func viewDidLoad() { 
    super.viewDidLoad() 

    apiManager.TapList { (fetchedBeers) in 
     self.beersMatch = fetchedBeers 

     var setFilters = Set<BeerStyle>() 
     for beer in fetchedBeers { 
      setFilters.insert(beer.StyleName) 
     } 

     self.filters = Array(setFilters) 

     DispatchQueue.main.async { 
      self.sliderTableView.reloadData() 
     } 
    } 
} 

// MARK: Table view data source 
func numberOfSections(in tableView: UITableView) -> Int { 
return 1 
} 

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) 
-> Int { 
return filteredJsonMatch.count 
} 

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) 
-> UITableViewCell { 
guard let cell = tableView.dequeueReusableCell(withIdentifier: 
"SliderListCell") as? SliderTableViewCell else { 
    return UITableViewCell() 
} 

// MARK: Beer name 
let beers = filteredJsonMatch[indexPath.row] 
cell.sliderMatchLabel.text = beers.BrewName 
cell.sliderMatchName.text = beers.BevName 
cell.sliderMatchRowNumber.text = jsons.DisplayName 

if let IBU = beers.Ibu { 
    cell.sliderMatchIBU.text = "\(IBU) IBU" 
} 

if let ABV = beers.Abv { 
    cell.sliderMatchABV.text = "\(ABV)%" 
} 

cell.sliderMatchJsonType.text = jsons.StyleName.name 
cell.sliderMatchLocation.text = jsons.Location 
cell.sliderMatchKegImage.image = jsons.kegPercentageFull() 

// MARK: Download image 
jsons.downloadImage { (jsonImage) in 
    DispatchQueue.main.async { 
     cell.sliderMatchImage.image = jsonImage 
    } 
} 
return cell 
} 

Answer 1

你是什么filteredJsonMatch？您是否应该将filters添加到您的filters阵列中？

在你TapList关闭：

var setFilters = Set<BeerStyle>() 
for beer in fetchedBeers { 
    setFilters.insert(beer.StyleName) 
} 

self.filters = Array(setFilters) 

但是当你填充数据到每个单元：

let beers = filteredJsonMatch[indexPath.row]