对不起在IOS Swift的新手。只想问一下如何在选择其中一个Popover单元格时更改我的BatButtonItem标题。即使我使用委托方法。但它对我来说仍然无效。
我的工作不顺利。
这是我的HOMEVC.swift（整个代码）
//
// HomeVC.swift
// SwiftLoginScreen
//
// Created by Dipin Krishna on 31/07/14.
// Copyright (c) 2014 Dipin Krishna. All rights reserved.
import UIKit
import AFNetworking
import FontAwesome_swift
import KeychainAccess
class HomeVC: UIViewController, UITableViewDataSource, UITableViewDelegate, UIPopoverPresentationControllerDelegate, LanguageViewControllerDelegate {
@IBOutlet weak var dashboardOpen: UIBarButtonItem!
@IBOutlet var usernameLabel : UILabel!
@IBOutlet weak var Open: UIBarButtonItem!
@IBOutlet weak var dashboard_icon1: UILabel!
@IBOutlet weak var card_view1: UIView!
@IBOutlet weak var sub_card_view1: UIView!
@IBOutlet weak var dashboard_icon2: UILabel!
@IBOutlet weak var card_view2: UIView!
@IBOutlet weak var sub_card_view2: UIView!
@IBOutlet weak var dashboard_icon3: UILabel!
@IBOutlet weak var card_view3: UIView!
@IBOutlet weak var sub_card_view3: UIView!
@IBOutlet weak var dashboard_icon4: UILabel!
@IBOutlet weak var theScrollView: UIScrollView!
@IBOutlet weak var card_view4: UIView!
@IBOutlet weak var sub_dashboard_icon: UILabel!
@IBOutlet weak var sub_dashboard_icon2: UILabel!
@IBOutlet weak var sub_dashboard_icon3: UILabel!
@IBOutlet weak var currentTimeLabel: UILabel!
@IBOutlet weak var currentTimeLabel2: UILabel!
@IBOutlet weak var currentTimeLabel3: UILabel!
@IBOutlet weak var card_view5: UITableView!
@IBOutlet weak var calendarView: NWCalendarView!
//@IBOutlet weak var ticketBtn: UIBarButtonItem!
@IBOutlet weak var barButtonItem: UIBarButtonItem!
@IBOutlet weak var companyWalletBalance: UILabel!
@IBOutlet weak var cashWalletBalance: UILabel!
@IBOutlet weak var signupWalletBalance: UILabel!
@IBOutlet weak var viewStatement1: UILabel!
@IBOutlet weak var viewStatement2: UILabel!
@IBOutlet weak var viewStatement3: UILabel!
@IBOutlet weak var languageTextField: UITextField!
public static var menuAPI = Json4Swift_Base.init()
public static var ticketAPI = TicketAPIResponse.init()
var timer = NSTimer()
var sections : [Section] = SectionsData().getSectionsFromData()
public static var tableData: [String] = []
public static var tableDate: [String] = []
let navigationBar = UINavigationBar(frame: CGRectMake(108, 0, 110, 64))
let navItem = UINavigationItem.init(title: "My Home")
//var pickOption = ["English", "简体", "繁体"]
//var segmentedControl: HMSegmentedControl = HMSegmentedControl(sectionTitles: ["One", "Two"])
override func viewDidLoad() {
super.viewDidLoad()
// For UIBar Button Item Title (English) //
let font = UIFont.boldSystemFontOfSize(14)
barButtonItem.setTitleTextAttributes([NSFontAttributeName: font], forState:UIControlState.Normal)
doLocalize()
//SwiftSpinner.showWithDelay(0.1, title: "Loading...")
//SwiftSpinner.hide()
// For UINavigation Bar //
navigationBar.barTintColor = UIColor(red: 1.0/255.0, green: 164.0/255.0, blue: 161.0/255.0, alpha: 0.5)
navigationBar.clipsToBounds = true
navigationBar.items = [navItem]
let titleDict: NSDictionary = [NSForegroundColorAttributeName: UIColor.whiteColor()]
navigationBar.titleTextAttributes = titleDict as! [String : AnyObject]
self.view.addSubview(navigationBar)
calendarView.layer.borderWidth = 1
calendarView.layer.borderColor = UIColor.lightGrayColor().CGColor
calendarView.backgroundColor = UIColor.whiteColor()
// For Calendar //
let date = NSDate()
print(date)
let newDate3 = date.dateByAddingTimeInterval(60*60)
calendarView.selectedDates = [newDate3]
calendarView.selectionRangeLength = 1
calendarView.createCalendar()
calendarView.scrollToDate(newDate3, animated: true)
// For Scrolling //
let subview = theScrollView.subviews[0] as! UIView;
//Make the scroll view's contentSize the same size as the content view.
theScrollView!.contentSize = subview.bounds.size;
// For Side Menu (With Swap) //
dashboardOpen.target = self.revealViewController()
dashboardOpen.action = Selector("revealToggle:")
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
// For Dashboard Icon //
dashboard_icon1.font = UIFont.fontAwesomeOfSize(40)
dashboard_icon1.text = String.fontAwesomeIconWithCode("fa-money")
dashboard_icon2.font = UIFont.fontAwesomeOfSize(40)
dashboard_icon2.text = String.fontAwesomeIconWithCode("fa-money")
dashboard_icon3.font = UIFont.fontAwesomeOfSize(40)
dashboard_icon3.text = String.fontAwesomeIconWithCode("fa-money")
dashboard_icon4.font = UIFont.fontAwesomeOfSize(40)
dashboard_icon4.text = String.fontAwesomeIconWithCode("fa-clock-o")
sub_dashboard_icon.font = UIFont.fontAwesomeOfSize(20)
sub_dashboard_icon.text = String.fontAwesomeIconWithCode("fa-arrow-circle-o-right")
sub_dashboard_icon2.font = UIFont.fontAwesomeOfSize(20)
sub_dashboard_icon2.text = String.fontAwesomeIconWithCode("fa-arrow-circle-o-right")
sub_dashboard_icon3.font = UIFont.fontAwesomeOfSize(20)
sub_dashboard_icon3.text = String.fontAwesomeIconWithCode("fa-arrow-circle-o-right")
// For Dashboard Radius //
card_view1.layer.masksToBounds = true;
card_view1.layer.cornerRadius = 5.0;
let path1 = UIBezierPath(roundedRect:sub_card_view1.bounds, byRoundingCorners:[.BottomRight, .BottomLeft], cornerRadii: CGSizeMake(5, 5))
let maskLayer1 = CAShapeLayer()
maskLayer1.path = path1.CGPath
sub_card_view1.layer.mask = maskLayer1
card_view2.layer.masksToBounds = true;
card_view2.layer.cornerRadius = 5.0;
let path2 = UIBezierPath(roundedRect:sub_card_view2.bounds, byRoundingCorners:[.BottomRight, .BottomLeft], cornerRadii: CGSizeMake(5, 5))
let maskLayer2 = CAShapeLayer()
maskLayer2.path = path2.CGPath
sub_card_view2.layer.mask = maskLayer2
card_view3.layer.masksToBounds = true;
card_view3.layer.cornerRadius = 5.0;
let path3 = UIBezierPath(roundedRect:sub_card_view3.bounds, byRoundingCorners:[.BottomRight, .BottomLeft], cornerRadii: CGSizeMake(5, 5))
let maskLayer3 = CAShapeLayer()
maskLayer3.path = path3.CGPath
sub_card_view3.layer.mask = maskLayer3
card_view4.layer.masksToBounds = true;
card_view4.layer.cornerRadius = 5.0;
card_view5.layer.masksToBounds = true;
card_view5.layer.cornerRadius = 5.0;
calendarView.layer.masksToBounds = true;
calendarView.layer.cornerRadius = 5.0;
// For Dashboard Current Time //
self.timer = NSTimer.scheduledTimerWithTimeInterval(1.0,
target: self,
selector: Selector("tick"),
userInfo: nil,
repeats: true)
// Do any additional setup after loading the view.
}
func changeName(text: String) {
self.barButtonItem.title = "\(text)" // For get barButton you should create IBOutlet for barButtonItem
print(self.barButtonItem.title)
}
@objc func tick() {
let date1 = NSDate()
let dateFormatter1 = NSDateFormatter()
dateFormatter1.dateFormat = "dd MMMM yyyy"
let timeZone1 = NSTimeZone(name: "GMT+8")
dateFormatter1.timeZone = timeZone1
let date2 = NSDate()
let dateFormatter2 = NSDateFormatter()
dateFormatter2.dateFormat = "EEEE"
let timeZone2 = NSTimeZone(name: "GMT+8")
dateFormatter2.timeZone = timeZone2
currentTimeLabel.text = dateFormatter1.stringFromDate(date1)
currentTimeLabel2.text = dateFormatter2.stringFromDate(date2)
currentTimeLabel3.text = NSDateFormatter.localizedStringFromDate(NSDate(),
dateStyle: .NoStyle,
timeStyle: .MediumStyle)
var day:String = ""
day = currentTimeLabel2.text!
if (day.containsString("Sunday")){
currentTimeLabel2.text = Localization("Sunday")
}
else if (day.containsString("Monday")){
currentTimeLabel2.text = Localization("Monday")
}
else if (day.containsString("Tuesday")){
currentTimeLabel2.text = Localization("Tuesday")
}
else if (day.containsString("Wednesday")){
currentTimeLabel2.text = Localization("Wednesday")
}
else if (day.containsString("Thursday")){
currentTimeLabel2.text = Localization("Thursday")
}
else if (day.containsString("Friday")){
currentTimeLabel2.text = Localization("Friday")
}
else{
currentTimeLabel2.text = Localization("Saturday")
}
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(true)
let parameters1 = ["ActionType":"default","LanguageCode":stringLang,"Token":result]
manager.POST(CONFIG_URL,
parameters: parameters1,
success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
print("JSON: " + responseObject.description)
var responseDict = responseObject as! Dictionary<String, AnyObject>
let dashboardAPI = DashboardAPIResponse(dictionary: responseDict)
},
failure: { (operation: AFHTTPRequestOperation?,error: NSError!) -> Void in
print("Error: " + error.localizedDescription)
})
let parameters = ["ActionType":"menu","LanguageCode":stringLang,"Token":result]
manager.POST(CONFIG_URL,
parameters: parameters,
success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
print("JSON: " + responseObject.description)
var responseDict = responseObject as! Dictionary<String, AnyObject>
HomeVC.menuAPI = Json4Swift_Base(dictionary: responseDict)
var tempArray = HomeVC.menuAPI?.result
for var i = 0; i < tempArray!.count ; ++i {
let level1 = tempArray![i].module
let level2 = tempArray![i].subModule
for var i = 0; i < level1!.count ; ++i {
print(level1![i].icon)
print(level1![i].label)
}
for var i = 0; i < level2!.count ; ++i {
print(level2![i].label)
var level3 = level2![i].function
for var i = 0; i < level3!.count ; ++i {
print(level3![i].label)
print(level3![i].menuLink)
print(level3![i].uRL)
}
}
}
},
failure: { (operation: AFHTTPRequestOperation?,error: NSError!) -> Void in
print("Error: " + error.localizedDescription)
})
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func doLocalize(){
companyWalletBalance.text = Localization("companyWalletBalance")
cashWalletBalance.text = Localization("cashWalletBalance")
signupWalletBalance.text = Localization("signupWalletBalance")
currentTimeLabel2.text = Localization("currentTimeLabel2")
viewStatement1.text = Localization("viewStatement")
viewStatement2.text = Localization("viewStatement")
viewStatement3.text = Localization("viewStatement")
navItem.title = Localization("navItem")
}
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return sections[section].heading
}
func tableView(tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int) {
// Text Color
var header: UITableViewHeaderFooterView = (view as! UITableViewHeaderFooterView)
header.textLabel!.textColor = UIColor.whiteColor()
header.contentView.backgroundColor = UIColor.blackColor()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return sections.count
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return sections[section].items.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var mycell = tableView.dequeueReusableCellWithIdentifier("sectionsCell", forIndexPath: indexPath) as! MyCustomTableViewCell
mycell.label1.text = sections[indexPath.section].items[indexPath.row]
mycell.label2.text = sections[indexPath.section].items[indexPath.row]
mycell.label3.text = sections[indexPath.section].items[indexPath.row]
mycell.label4.text = sections[indexPath.section].items[indexPath.row]
return mycell
}
func tableView(tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 40.0
}
func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle
{
return UIModalPresentationStyle.None
}
@IBAction func languageButton(sender: AnyObject) {
let storyboard : UIStoryboard = UIStoryboard(name: "Storyboard", bundle: nil)
var menuViewController: LanguageViewController = storyboard.instantiateViewControllerWithIdentifier("LanguageViewController") as! LanguageViewController
menuViewController.delegate = self // Put this Line
menuViewController.modalPresentationStyle = .Popover
menuViewController.preferredContentSize = CGSizeMake(50, 100)
let popoverMenuViewController = menuViewController.popoverPresentationController
popoverMenuViewController?.permittedArrowDirections = .Any
popoverMenuViewController?.delegate = self
popoverMenuViewController?.sourceView = menuViewController.view
popoverMenuViewController?.sourceRect = CGRect(x:240, y:35, width: 1, height: 1)
presentViewController(menuViewController, animated: true, completion: nil)
}
@IBAction func dashboardLogout(sender: AnyObject) {
let parameters = ["ActionType":"logout"]
manager.POST(CONFIG_URL,
parameters: parameters,
success: { (operation: AFHTTPRequestOperation!,responseObject: AnyObject!) in
print("JSON: " + responseObject.description)
// CLEAN COOKIES //
let cookie = NSHTTPCookie.self
let cookieJar = NSHTTPCookieStorage.sharedHTTPCookieStorage()
for cookie in cookieJar.cookies! {
print(cookie.name+"="+cookie.value)
cookieJar.deleteCookie(cookie)
}
var revealViewControler :SWRevealViewController = self.revealViewController()
let webViewController = self.storyboard!.instantiateViewControllerWithIdentifier("SWRevealViewController") as! SWRevealViewController
revealViewControler.pushFrontViewController(webViewController, animated: true)
},
failure: { (operation: AFHTTPRequestOperation?,error: NSError!) -> Void in
print("Error: " + error.localizedDescription)
})
}
}
// For Date + Time //
extension NSDate {
var formattedd:String {
let formatter = NSDateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
return formatter.stringFromDate(self)
}
func formatteddWith(format:String) -> String {
let formatter = NSDateFormatter()
formatter.dateFormat = format
return formatter.stringFromDate(self)
}
}
// For Date + Time //
extension String {
var asDatee:NSDate! {
let styler = NSDateFormatter()
styler.dateFormat = "yyyy-MM-dd"
return styler.dateFromString(self)!
}
func asDateFormatteddWith(format:String) -> NSDate! {
let styler = NSDateFormatter()
styler.dateFormat = format
return styler.dateFromString(self)!
}
}
这是我的LANGUAGEVIEWCONTROLLER.swift（显示Popover的内容）
//
// LanguageViewController.swift
// SwiftLoginScreen
//
// Created by User on 3/21/16.
// Copyright © 2016 Dipin Krishna. All rights reserved.
//
import UIKit
import AFNetworking
protocol LanguageViewControllerDelegate{
func changeName(text:String)
}
class LanguageViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var tableView: UITableView!
var delegate:LanguageViewControllerDelegate! = nil
var arrLanguage: [String] = ["English", "简体", "繁体"]
override func viewDidLoad() {
super.viewDidLoad()
tableView.tableFooterView = UIView()
// Do any additional setup after loading the view, typically from a nib.
//self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(true)
}
func tableView(tableView: UITableView, didselectRowAtIndexPath indexPath: NSIndexPath) {
delegate!.changeName(arrLanguage[indexPath.row])
tableView.delegate = self
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return arrLanguage.count;
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell:LanguageTableViewCell = self.tableView.dequeueReusableCellWithIdentifier("LanguageTableViewCell") as! LanguageTableViewCell
cell.languageLabel.text = arrLanguage[indexPath.row]
return cell
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// For Popover Frame Size //
override var preferredContentSize: CGSize {
get
{
return CGSize(width: 150, height: 130)
}
set
{
super.preferredContentSize = newValue
}
}
}
这是我的LANGUAGETABLEVIEWCELL.swift
//
// LanguageTableViewCell.swift
// SwiftLoginScreen
//
// Created by User on 3/21/16.
// Copyright © 2016 Dipin Krishna. All rights reserved.
//
import UIKit
class LanguageTableViewCell: UITableViewCell {
@IBOutlet weak var languageLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
当我尝试调试这部分代码时，当我的代码运行时，它不会通过此代码。为什么？
func changeName(text: String) {
self.barButtonItem.title = "\(text)" // For get barButton you should create IBOutlet for barButtonItem
print(self.barButtonItem.title)
}
请帮助。
答案 0 :(得分：1)
第1步：在将要发送数据的LanguageViewController中创建一个协议。
protocol LanguageViewControllerDelegate{
func changeName(text:String)
}
Step2：在发送类中声明委托（即HOMEVC）
class LanguageViewController: UIViewController {
var delegate:LanguageViewControllerDelegate! = nil
[...]
}
Step3：在类方法中使用委托将数据发送到接收方法，这是采用该协议的任何方法。
func tableView(tableView: UITableView, didselectRowAtIndexPath indexPath: NSIndexPath) {
delegate!.changeName(arrLanguage[indexPath.row])
}
第4步：在接收类中采用协议
class HomeViewController: UIViewController,LanguageViewControllerDelegate { }
第5步：实现委托方法（HomeViewController - 与您的问题一样）
func changeName(text: String) {
self.barButton.title = "\(text)" // For get barButton you should create IBOutlet for barButtonItem
}
步骤6：在Popover的BarButtonItem的操作按钮中设置委托：
@IBAction func languageButton(sender: AnyObject) {
let storyboard : UIStoryboard = UIStoryboard(name: "Storyboard", bundle: nil)
var menuViewController: LanguageViewController = storyboard.instantiateViewControllerWithIdentifier("LanguageViewController") as! LanguageViewController
menuViewController.modalPresentationStyle = .Popover
menuViewController.preferredContentSize = CGSizeMake(50, 100)
menuViewController.delegate = self // Put this Line
let popoverMenuViewController = menuViewController.popoverPresentationController
popoverMenuViewController?.permittedArrowDirections = .Any
popoverMenuViewController?.sourceView = menuViewController.view
popoverMenuViewController?.delegate = self
popoverMenuViewController?.sourceRect = CGRect(x:240, y:35, width: 1, height: 1)
presentViewController(menuViewController, animated: true, completion: nil)
}
Yoy应该在viewDidLoad（）中放置tableView委托和数据： -
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.tableFooterView = UIView()
}
并且tableView didSelectRow： -
func tableView(tableView: UITableView, didselectRowAtIndexPath indexPath: NSIndexPath) {
delegate!.changeName(arrLanguage[indexPath.row])
}
希望这会奏效......