如何根据tablecell更改导航自定义视图

Question

根据单元格更改导航栏详细信息，如名称、图像和时间

import UIKit

class MessageViewController：UIViewController，UITableViewDataSource，UITableViewDelegate {

var MessageData : NSMutableArray!
@IBOutlet weak var tableviee: UITableView!
override func viewDidLoad() {
    super.viewDidLoad()
    
    MessageData = NSMutableArray()
    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "Silvestor Young", profileMessage: "Hi, I want to purchase your service, can you please provide it to me", Messagtime: "10 min ago"))
    
    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "Welma Simpson", profileMessage: "How much is it cost to repeate it again", Messagtime: "22 min ago"))
    
    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "Robert Doe", profileMessage: "It was really nice and calm", Messagtime: "1h ago"))
    
    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "Steve Adams", profileMessage: "I need an extra piece of this can you provide it to me.", Messagtime: "1 h ago"))

    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "Alizia Smith", profileMessage: "ok noted thanks", Messagtime: "3 h ago"))
    
    MessageData.add(getMessageListData(image: "ProfileImageRound", profileName: "JW Doe", profileMessage: "Thank you for your inquiry om this can you provide details for your so i can contact you", Messagtime: "3 h ago"))
    
    tableviee.register(UINib(nibName: "MessageMainCell", bundle: nil), forCellReuseIdentifier: "MessageMainCell")
    let messageBar = MessageBar.instanceFromNib() as! MessageBar
    self.navigationItem.leftBarButtonItem = UIBarButtonItem(customView: messageBar)
}



func getMessageListData(image: String, profileName: String, profileMessage: String, Messagtime: String) -> NSMutableDictionary{
    let data = NSMutableDictionary()
    data["image"] = image
    data["profileName"] = profileName
    data["profileMessage"] = profileMessage
    data["Messagetime"] = Messagtime
    return data
}

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

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return 100
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "MessageMainCell", for: indexPath ) as! MessageMainCell
    if let setData = MessageData.object(at: indexPath.row) as? NSDictionary{
        cell.setListdata(data: setData)
    }
    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    tableView.deselectRow(at: indexPath, animated: true)
    let stroryBoard = UIStoryboard(name: "Main", bundle: nil)
    let rootVc = stroryBoard.instantiateViewController(withIdentifier: "MessageDetailViewController") as! MessageDetailViewController
    
    let backImage = UIImage(named: "backArrowWhite")
    self.navigationController?.navigationBar.backIndicatorImage = backImage
    self.navigationController?.navigationBar.backIndicatorTransitionMaskImage = backImage
    self.navigationItem.backBarButtonItem = UIBarButtonItem(title: "", style: UIBarButtonItem.Style.plain, target: nil, action: nil)
    self.navigationController?.navigationBar.tintColor = .black
    self.navigationController?.pushViewController(rootVc, animated: true)
}

}

这是我的消息视图控制器代码

进口 UIKit

class MessageDetailViewController: UIViewController {

@IBOutlet weak var tableview: UITableView!

struct data{
    let time: String
    let message: String
    let date: String
    let type: String
}

struct section {
    let date: String
    var array = [data]()
}

let sectionArray = [
    section(date: "yesterday", array: [
            data(time: "3:30 PM", message: "I am looking for your service, can you please give more information on that.", date: "yesterday", type: "sender"),
            data(time: "3:40 PM", message: "Sure i am here to help you", date: "yesterday", type: "receiver")
        ]),
    section(date: "today", array: [
        data(time: "4:40 PM", message: "Ok, I wil contact you on your phone for that.", date: "today", type: "sender"),
        data(time: "5: 30 PM", message: "SO HERRE IS my contact number 9586670629", date: "today", type: "receiver"),
        data(time: "5: 30 PM", message: "OKAY I will call back you within 15 20 minitues", date: "today", type: "sender")
        ])
]

override func viewDidLoad() {
    super.viewDidLoad()

    self.tableview.register(UINib(nibName: "SenderCell", bundle: nil), forCellReuseIdentifier: "SenderCell")
    self.tableview.register(UINib(nibName: "ReceiverCell", bundle: nil), forCellReuseIdentifier: "ReceiverCell")
    self.tableview.register(UINib(nibName: "customHeaderViewCell", bundle: nil), forCellReuseIdentifier: "customHeaderViewCell")
}

override func viewWillAppear(_ animated: Bool) {
    let messageDetailBar = MessageDetailbar.instanceFromNib() as! MessageDetailbar
    self.navigationItem.titleView = messageDetailBar
}

}

扩展 MessageDetailViewController: UITableViewDelegate, UITableViewDataSource{

func numberOfSections(in tableView: UITableView) -> Int {
    return sectionArray.count
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return sectionArray[section].array.count
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    self.tableview.deselectRow(at: indexPath, animated: true)
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if sectionArray[indexPath.section].array[indexPath.row].type == "sender"
        {
            let cell = tableview.dequeueReusableCell(withIdentifier: "SenderCell", for: indexPath) as! SenderCell
            cell.setData(reciverTime: sectionArray[indexPath.section].array[indexPath.row].time, reciverMsg: sectionArray[indexPath.section].array[indexPath.row].message)
            return cell
        }
        else
        {
            let cell = tableView.dequeueReusableCell(withIdentifier: "ReceiverCell", for: indexPath) as! ReceiverCell
            cell.setData(reciverTime: sectionArray[indexPath.section].array[indexPath.row].time, reciverMsg: sectionArray[indexPath.section].array[indexPath.row].message)
            return cell
        }
}

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableView.automaticDimension
}

func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableView.automaticDimension
}

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {

    let headerView = UIView()
    let headerCell = tableView.dequeueReusableCell(withIdentifier: "customHeaderViewCell") as! customHeaderViewCell
    if sectionArray[section].date == "yesterday"
        {
            headerCell.labelHeader.text = "yesterday"
        }
    else
        {
            headerCell.labelHeader.text = "today"
        }
    headerView.addSubview(headerCell)
    return headerView
    }
}

这是 messageDetailviewController 文件

在消息详细视图 controller 我有自定义导航栏，我通过 viewWillAppear() 添加

在自定义 uiview 我想添加来自单元格名称、图像和时间的信息

进口 UIKit

class 消息详细信息栏：UIView {

@IBOutlet weak var time: UILabel!
@IBOutlet weak var name: UILabel!
@IBOutlet weak var imageView: UIImageView!


class func instanceFromNib() -> UIView {
    return UINib(nibName: "MessageDetailbar", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! UIView
}

func setBarData(data: NSDictionary) {
    if let image = data["image"] as? String{
        imageView.image = UIImage(named: image)
    }

    if let Name = data["profileName"] as? String{
        name.text = Name
    }

    if let Time = data["Messagetime"] as? String{
        time.text = Time
    }
}

}

这是自定义导航栏的消息详细信息栏

现在我的问题是如何根据选定的表格视图单元格更改自定义导航栏详细信息

Answer 1

您可以使用委托来更改导航栏。 由于您在视图 controller 中设置了单元格，并且您的视图 controller 可以访问导航栏，因此您可以将 tableCell.delegate 设置为 self(viewController) 并使用委托 ZC1C425268E687A94D1AB50741C 进行设置

或者，

您可以在 didSelectRowAt 中执行此操作，您已经拥有数组中的索引和项目。 您可以使用自定义数据从 didSelectRowAt 调用 function。