ios - 如何过滤 UITableView 中的所有部分以获取想要的项目

Question

我有一个由对象数组填充的 UITableView(每个对象都是一个部分)。在这个对象数组中，每个对象都有很少的项目(带有描述和其他属性的问题)。 目前，我从我的 UITableView 中隐藏了所有不需要的问题。但是这种做法是不行的，所以我想重构并过滤我的问题，以便只从每个部分中获取所需的问题。 所以我想要一个包含部分的数组，其中每个部分的项目都被过滤了。 要求是:

item.showTrailer == false && item.showVehicle == true。

这是我的代码:

// MARK: MODEL
class ChecklistItemSection {

    var name: String // name of the section
    var checklistItems: [ChecklistItem] // all items from Checklist

    init(named: String, checklistItems: [ChecklistItem]) {

        self.name = named
        self.checklistItems = checklistItems
    }

    class func checklistItemSections() -> [ChecklistItemSection] {

        var allSections = [vehicleCheck(), viewingScreen() ]

        for (index, section) in allSections.enumerated() {
            if(section.checklistItems.count < 1) {
                allSections.remove(at: index)
            }
        }
        return allSections
    }

    // Private methods
    private class func vehicleCheck() -> ChecklistItemSection {

        var checklistItems = [ChecklistItem]()

        checklistItems.append(ChecklistItem(templateID: 109, lineID: 3, poolID: 10, descript: "Tyres - Wear/Damage/Bulges/Cuts/Flat tyres", showVehicle: false, showTrailer: true, highlight: false, pg9: false, imagesPath: [])!)
        checklistItems.append(ChecklistItem(templateID: 109, lineID: 4, poolID: 22, descript: "Vehicle and trailer coupling: undamaged and safety locking device working", showVehicle: true, showTrailer: false, highlight: true, pg9: true, imagesPath: [])!)
        checklistItems.append(ChecklistItem(templateID: 109, lineID: 7, poolID: 20, descript: "Exhaust - Condition/Emission (Excess smoke)", showVehicle: true, showTrailer: false, highlight: false, pg9: false, imagesPath: [])!)
        checklistItems.append(ChecklistItem(templateID: 109, lineID: 3, poolID: 10, descript: "Tyres - Wear/Damage/Bulges/Cuts/Flat tyres", showVehicle: true, showTrailer: false, highlight: false, pg9: false, imagesPath: [])!)
        checklistItems.append(ChecklistItem(templateID: 109, lineID: 4, poolID: 22, descript: "Vehicle and trailer coupling: undamaged and safety locking device working", showVehicle: true, showTrailer: true, highlight: true, pg9: true, imagesPath: [])!)
        checklistItems.append(ChecklistItem(templateID: 109, lineID: 7, poolID: 20, descript: "Exhaust - Condition/Emission (Excess smoke)", showVehicle: false, showTrailer: true, highlight: false, pg9: false, imagesPath: [])!)

        return ChecklistItemSection(named: "Section 1", checklistItems: checklistItems)
    }

    private class func viewingScreen() -> ChecklistItemSection {

        var checklistItems = [ChecklistItem]()

        checklistItems.append(ChecklistItem(templateID: 38, lineID: 28, poolID: 16, descript: "Windscreen Wipers & Washers are they effective?", showVehicle: true, showTrailer: false, highlight: false, pg9: false, imagesPath: [])!)

        checklistItems.append(ChecklistItem(templateID: 38, lineID: 28, poolID: 16, descript: "Water Level - In cab indicator", showVehicle: true, showTrailer: false, highlight: false, pg9: false, imagesPath: [])!)

        return ChecklistItemSection(named: "Section 2", checklistItems: checklistItems)
    }
}

class ChecklistItem{

    var showVehicle: Bool
    var showTrailer: Bool
}


// MARK: VC
class ChecklistViewController: UIViewController {

    lazy var checklistItem: [ChecklistItemSection] = { return ChecklistItemSection.checklistItemSections() }()

    var filteredQuestions: [ChecklistItemSection] = []

    override func viewDidLoad() {
        super.viewDidLoad()

        filteredQuestions = All sections where the questions have showVehicle == true && showTrailer == false
    }
}

感谢阅读本文。

Answer 1

你可以试试

filteredQuestions = checklistItem.filter { $0.checklistItems.filter { !$0.showTrailer && $0.showVehicle }.count != 0  }

---

编辑:

checklistItem.forEach {
    $0.checklistItems.forEach {
        if $0.showTrailer {
            $0.showTrailer = false
        }
    }
}