快速地從Presented ViewController轉到Previous ViewController時調用哪種方法

Question

我有一個問題，我在其中我提出了一個應用程序的工作ViewController(FilterVC)從我以前的ViewController(ItemsVC) 我將過濾器數據存儲在這樣的委托方法中

protocol FilterVCDelegate: class {
func didSelectedFilters(_ sender: FilterVC, with selectedFilters: [String:Any])
}

然后單擊按鈕，我將數據成功傳遞給我以前的ItemVC如下所示：-

@IBAction func applyButtonAction(_ sender: UIButton) {
    printD(selectedFilters)
    self.delegate?.didSelectedFilters(self, with: self.selectedFilters)
    self.dismiss(animated: true, completion: nil)
}

ItemVC： -

func didSelectedFilters(_ sender: FilterVC, with selectedFilters: [String : Any]) {
    self.currentFilters = selectedFilters
    printD("selectedFilters \(currentFilters)") // successfully get data from previous vc
}

這里是調用api方法：-

func searchFromLatestRelease() {

  //  let param: [String:Any] = ["page": pageNo, "search_term": forSearch, "order_by": "date", "token": commonClass.sharedInstance.userToken ?? ""]

    let param: [String:Any] = ["price_range": currentFilters["price"] as? [String] as Any, "page": "0", "is_rating": currentFilters["Product Rating"] as? [String] as Any]
    printD("param: \(param)")
    Alamofire.request(Constants.API.url("search"), method: .post, parameters: param, encoding: URLEncoding.httpBody, headers: nil).responseJSON {
        (response:DataResponse<Any>) in

        guard let json = response.result.value as? [String:Any] else {return}
        printD(json)

        guard let status = json["status"] as? Int else {return}
        printD(status)

        if status == 1 {

            if self.pageNo == 0 { self.sneakers = [] }
            guard let data = json["data"] as? [[String:Any]] else { return}

            printD(data)
            for dic in data {
                self.sneakers.append(sneakerModel(response: dic))
            }

            self.reloadData()

        }
        else {
            commonClass.sharedInstance.showErrorMessage(json["msg"] as? String ?? "Server error. Please try again later.")
        }
    }
}

但是在ViewWillAppear和ViewDidLoad調用它是ViewDidLoad 。 現在，我需要使用這些文件管理器作為參數來調用API 。 刷新數據並成功在ItemsVC上顯示篩選的項目。 ViewController LifeCycle中有8個ViewControllers ，但我不打算使用它來刷新ItemVC以顯示過濾的數據。 請幫忙？

在這里，我在控制台中得到我的currenFilter，如下所示：-

selectedFilters ["Product Rating": ["5", "4", "3", "2", "1"], "Price": ["$00.00 - $200.00", "$200.00 - $400.00", "$600.00 - $800.00", "$800.00 - $1000.00", "$1000.00 AND OVER"]]

（LLDB）

Answer 1

初始化vc時調用一次viewDidLoad ，模型關閉后調用ViewWillAppear / viewDidAppear ，您需要

func didSelectedFilters(_ selectedFilters: [String : Any]) {
    self.currentFilters = selectedFilters
    self.searchFromLatestRelease()
}