iOS深色模式状态栏不适用于所有视图控制器

问题描述

我使用具有多个视图控制器的iOS应用程序。初始控制器将显示当前模式的状态，而第二个视图是设置。

此应用有3种用于黑暗模式的选项：亮，暗和系统。

但是，当我选择亮或暗模式时，状态栏的颜色与亮/模式相同。

例如：我的系统设置处于“亮模式”，但是我在应用程序中选择了“暗”模式。但是，状态栏是黑色而不是白色。

我尝试了许多方法，但是它不起作用，并且我删除了该代码段。这是我的代码。

FirstViewController

import UIKit

class FirstViewController: UIViewController,MyDataSendingDelegate {
    var darkStatus = UserDefaults.standard.string(forKey: "dark_mode")
    
    let defaults = UserDefaults.standard
    var currentMode = uitraitcollection.current.userInterfaceStyle
    
    @IBOutlet weak var darkModeLabel: UILabel!

    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        //print(darkStatus!)
        
        if(darkStatus == "Light"){
            overrideUserInterfaceStyle = .light
            darkModeLabel.text = "Light"
        } else if (darkStatus == "Dark"){
            overrideUserInterfaceStyle = .dark
            darkModeLabel.text = "Dark"
        }else if (darkStatus == "System"){
            overrideUserInterfaceStyle = .unspecified
            darkModeLabel.text = "System"
        }
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
    }
    
    // Delegate Method
    func sendDataToFirstViewController(myData: String) {
        self.darkStatus = myData
        if(darkStatus == "Light"){
            overrideUserInterfaceStyle = .light
            currentMode = .light
            darkModeLabel.text = "Light"
        } else if (darkStatus == "Dark"){
            overrideUserInterfaceStyle = .dark
            currentMode = .dark
            darkModeLabel.text = "Dark"
        }else if (darkStatus == "System"){
            overrideUserInterfaceStyle = .unspecified
            currentMode = .unspecified
            darkModeLabel.text = "System"
        }
        
    }
    override func prepare(for segue: UIStoryboardSegue,sender: Any?) {
          if segue.identifier == "darkModeSegue" {
              let secondVC = segue.destination as! DarkModeViewController
              secondVC.delegate = self
          }
    }
}

DarkModeViewController

import UIKit
protocol MyDataSendingDelegate {
    func sendDataToFirstViewController(myData: String)
}


class DarkModeViewController: UIViewController,UITableViewDataSource,UITableViewDelegate {
    
    @IBOutlet weak var darkModeTable: UITableView!
    var delegate: MyDataSendingDelegate? = nil
    
    let mode = ["Light","Dark","System"]
    
    let defaults = UserDefaults.standard
    var completionHandler:((String) -> Int)?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let darkStatus = defaults.string(forKey: "dark_mode")

        if(darkStatus == "Light"){
            overrideUserInterfaceStyle = .light
        } else if (darkStatus == "Dark"){
            overrideUserInterfaceStyle = .dark
        }else if (darkStatus == "System"){
            overrideUserInterfaceStyle = .unspecified
        }
        
        darkModeTable.dataSource = self
        darkModeTable.delegate = self
    }
    
    // Table View Data Source method
     func numberOfSections(in tableView: UITableView) -> Int {
        return 1
     }
    
     // Table View Data Source method
     func tableView(_ tableView: UITableView,numberOfRowsInSection section: Int) -> Int {
        return mode.count
     }

     // Table View Data Source method
     func tableView(_ tableView: UITableView,cellForRowAt indexPath: IndexPath)
     -> UITableViewCell {

        var cell: UITableViewCell!

         //take a cell from the queue of reusable cells
         cell = tableView.dequeueReusableCell(
         withIdentifier: "tableCell")

         //if there are no reusable cells
         if cell == nil {

             // create a new cell
             cell = UITableViewCell(
             style: UITableViewCell.CellStyle.default,reuseIdentifier: "tableCell")
         }

        // set the textLabel for the cell
         cell!.textLabel!.text = mode[indexPath.row]
        
        // initialize the checkmark based on Light/Dark/System
        if (overrideUserInterfaceStyle == .light){
            if (mode[indexPath.row] == "Light"){
                cell.accessoryType = .checkmark
            }
            else{
                cell.accessoryType = .none
            }
        }
        else if (overrideUserInterfaceStyle == .dark){
            if (mode[indexPath.row] == "Dark"){
                cell.accessoryType = .checkmark
            }
            else{
                cell.accessoryType = .none
            }
   
        }
        else if (overrideUserInterfaceStyle == .unspecified){
            if (mode[indexPath.row] == "System"){
                cell.accessoryType = .checkmark
            }
            else{
                cell.accessoryType = .none
            }
        }
    
         // return the Table View Cell
         return cell!
     }

    // Table View Delegate method
    func tableView(_ tableView: UITableView,didSelectRowAt indexPath: IndexPath) {
        
        //clear prevIoUs stored checked indexPath
        for row in 0..<tableView.numberOfRows(inSection: indexPath.section) {
            if let cell = tableView.cellForRow(at: IndexPath(row: row,section: indexPath.section)) {
                cell.accessoryType = row == indexPath.row ? .checkmark : .none
            }
        }
        if(indexPath.row == 0)
        {
            overrideUserInterfaceStyle = .light
            defaults.setValue("Light",forKey: "dark_mode")
        }
        else if(indexPath.row == 1)
        {
            overrideUserInterfaceStyle = .dark
            defaults.setValue("Dark",forKey: "dark_mode")
        }
        else if(indexPath.row == 2)
        {
            overrideUserInterfaceStyle = .unspecified
            defaults.setValue("System",forKey: "dark_mode")
        }
        let dataToBeSent = mode[indexPath.row]
        self.delegate?.sendDataToFirstViewController(myData: dataToBeSent)
        tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark
    }
    
    func tableView(_ tableView: UITableView,diddeselectRowAt indexPath: IndexPath) {
        
        tableView.cellForRow(at: indexPath)?.accessoryType = .none
    }
    
}

解决方法

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