直接在应用程序

时间：2016-08-29 08:23:49

标签： ios swift localization

一直尝试将我的应用本地化为7种语言，但我发现的所有教程只显示如何在单个页面上显示，而不是通过应用程序。

当设备属于该语言时，我现在处于本地化工作的位置，但需要能够通过按钮更改语言。

编辑：以下代码适用于寻找类似解决方案的任何人。

以下注释：

  1. 以下代码组会创建应用内语言更改，包括标签栏名称。
  2. 您必须将所有数据放在localize.strings中，因为main.strings不能用于此。这意味着您需要以编程方式添加所有＆＃34;返回＆＃34;，＆＃34;取消＆＃34;和导航标题，以及菜单项。
  3. 每个＆＃34; changeToXX＆＃34;内的NSNotificationCenter; func设置为通知tabBarViewController（或您需要的任何控制器）语言已更改。

    4. 我

    import UIKit 
let AppLanguageKey = "AppLanguage"

let AppLanguageDefaultValue = ""

var appLanguage: String {

get {
    if let language = NSUserDefaults.standardUserDefaults().stringForKey(AppLanguageKey) {
        return language
    } else {
        NSUserDefaults.standardUserDefaults().setValue(AppLanguageDefaultValue, forKey: AppLanguageKey)
        return AppLanguageDefaultValue
    }
}

 set(value) {
     NSUserDefaults.standardUserDefaults().setValue((value), forKey: AppLanguageKey)
 } 

 }

 let languageChangedKey = "languageChanged"

 class SettingsLanguageVC: UIViewController
 {


    @IBOutlet weak var languageENButton: UIButton!
    @IBOutlet weak var flagENImageView: UIImageView!
    @IBOutlet weak var languageENTitleLabel: UILabel!
    @IBOutlet weak var checkmarkEN: UIImageView!

    @IBOutlet weak var languageDEButton: UIButton!
    @IBOutlet weak var flagDEImageView: UIImageView!
    @IBOutlet weak var languageDETitleLabel: UILabel!
    @IBOutlet weak var checkmarkDE: UIImageView!

    @IBOutlet weak var languageFRButton: UIButton!
    @IBOutlet weak var flagFRImageView: UIImageView!
    @IBOutlet weak var languageFRTitleLabel: UILabel!
    @IBOutlet weak var checkmarkFR: UIImageView!

    @IBOutlet weak var languageESButton: UIButton!
    @IBOutlet weak var flagESImageView: UIImageView!
    @IBOutlet weak var languageESTitleLabel: UILabel!
    @IBOutlet weak var checkmarkES: UIImageView!

    var tabBar = TabBarController()
    var MyDelegateClass = ""


    override func viewDidLoad()
    {
        super.viewDidLoad()

        configureView()
        print(appLanguage)

        navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Back".localized, style: .Plain, target: self, action: #selector(SettingsLanguageVC.back(_:)))
        navigationItem.title = "Select a language".localized

    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
    }


    func setTranslatedText(){
        if appLanguage == "es" {
            checkmarkShowES()

        } else if appLanguage == "de" {
            checkmarkShowDE()

        } else if appLanguage == "fr" {
            checkmarkShowFR()

        } else {
            checkmarkShowEN()
        }

    }
    func configureView(){


        let localeEN = NSLocale(localeIdentifier: "en")
        let English = localeEN.displayNameForKey(NSLocaleIdentifier, value: "en")

        languageENTitleLabel.text = English
        flagENImageView.image = UIImage(named: "flag-en.png")
        languageENButton.addTarget(self, action: #selector(self.changeToEN), forControlEvents: .TouchUpInside)

        //German

        let localeDE = NSLocale(localeIdentifier: "de")
        let German = localeDE.displayNameForKey(NSLocaleIdentifier, value: "de")

        languageDETitleLabel.text = German
        flagDEImageView.image = UIImage(named: "flag-de.png")
        languageDEButton.addTarget(self, action: #selector(self.changeToDE), forControlEvents: .TouchUpInside)

        //French

        let localeFR = NSLocale(localeIdentifier: "fr")
        let French = localeFR.displayNameForKey(NSLocaleIdentifier, value: "fr")

        languageFRTitleLabel.text = French
        flagFRImageView.image = UIImage(named: "flag-fr.png")
        languageFRButton.addTarget(self, action: #selector(self.changeToFR), forControlEvents: .TouchUpInside)

        //Spanish

        let localeES = NSLocale(localeIdentifier: "es")
        let Spanish = localeES.displayNameForKey(NSLocaleIdentifier, value: "es")

        languageESTitleLabel.text = Spanish
        flagESImageView.image = UIImage(named: "flag-es.png")
        languageESButton.addTarget(self, action: #selector(self.changeToES), forControlEvents: .TouchUpInside)


        if appLanguage == "es" {
            checkmarkShowES()

        } else if appLanguage == "de" {
            checkmarkShowDE()

        } else if appLanguage == "fr" {
            checkmarkShowFR()

        } else {
            checkmarkShowEN()
        }
    }


    func changeToEN(sender: UIButton)
    {
        checkmarkShowEN()
        appLanguage = "en"
        NSUserDefaults.standardUserDefaults().synchronize()
        NSNotificationCenter.defaultCenter().postNotificationName(languageChangedKey, object: self)
        [self.viewDidLoad()]
    }

    func changeToDE(sender: UIButton)
    {
        appLanguage = "de"
        NSUserDefaults.standardUserDefaults().synchronize()
        NSNotificationCenter.defaultCenter().postNotificationName(languageChangedKey, object: self)
        [self.viewDidLoad()]
    }

    func changeToFR(sender: UIButton)
    {
        checkmarkShowFR()
        appLanguage = "fr"
        NSUserDefaults.standardUserDefaults().synchronize()
        NSNotificationCenter.defaultCenter().postNotificationName(languageChangedKey, object: self)
        [self.viewDidLoad()]
    }

    func changeToES(sender: UIButton)
    {
        checkmarkShowES()
        appLanguage = "es"
        NSUserDefaults.standardUserDefaults().synchronize()
        NSNotificationCenter.defaultCenter().postNotificationName(languageChangedKey, object: self)
        [self.viewDidLoad()]
    }


    func checkmarkShowEN (){
        self.checkmarkEN.hidden = false
        self.checkmarkDE.hidden = true
        self.checkmarkFR.hidden = true
        self.checkmarkES.hidden = true
    }


    func checkmarkShowDE (){
        self.checkmarkEN.hidden = true
        self.checkmarkDE.hidden = false
        self.checkmarkFR.hidden = true
        self.checkmarkES.hidden = true
    }

    func checkmarkShowFR (){
        self.checkmarkEN.hidden = true
        self.checkmarkDE.hidden = true
        self.checkmarkFR.hidden = false
        self.checkmarkES.hidden = true
    }

    func checkmarkShowES () {

        self.checkmarkEN.hidden = true
        self.checkmarkDE.hidden = true
        self.checkmarkFR.hidden = true
        self.checkmarkES.hidden = false
    }



    @IBAction func back (sender: AnyObject) {
        //back one VC
        navigationController?.popViewControllerAnimated(true)
    }


}

    所有需要本地化的文本，需要有后缀.localized，以及StringExtension.swift中的以下内容

        extension String {

var localized: String {
    return localized(appLanguage)
}

var localizeStringUsingSystemLang: String {
    return NSLocalizedString(self, comment: "")
}

func localized(lang:String?) -> String {

    if let lang = lang {
        if let path = NSBundle.mainBundle().pathForResource(lang, ofType: "lproj") {
            let bundle = NSBundle(path: path)
            return NSLocalizedString(self, tableName: nil, bundle: bundle!, value: "", comment: "")
        }
    }

return localizeStringUsingSystemLang
}
}
 return localizeStringUsingSystemLang
    }
}

    这是TabBarController代码：

    1. 注意：标签＆＃34;搜索＆＃34;，＆＃34;收藏夹＆＃34;和＆＃34;更多＆＃34;是系统标签。我不得不将它们更改为自定义并手动将名称添加到选项卡并添加我自己的图标。否则它们将不会被本地化。

      导入UIKit

      class TabBarController：UITabBarController {

      override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    setTabViewControllerParams(0, tabBarItemTitle: "Species".localized, navigationItemTitle: filterBy)
    setTabViewControllerParams(1, tabBarItemTitle: "Regions".localized, navigationItemTitle: "My Regions".localized)
    setTabViewControllerParams(2, tabBarItemTitle: "Favorites".localized, navigationItemTitle: "Favorites".localized)
    setTabViewControllerParams(3, tabBarItemTitle: "Search".localized, navigationItemTitle: "")
    setTabViewControllerParams(4, tabBarItemTitle: "More".localized, navigationItemTitle: "Reef Life Apps")

    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(TabBarController.languageChangedTrigger), name: languageChangedKey, object: nil)

}


func languageChangedTrigger () {

    [self.viewDidLoad()]
}


func setTabViewControllerParams(index: Int, tabBarItemTitle: String, navigationItemTitle: String) {

    if let tabBarItems = tabBar.items {
        if index < tabBarItems.count {
            tabBarItems[index].title = tabBarItemTitle
        }
    }

    if let viewControllers = viewControllers {
        if index < viewControllers.count {
            if let navigationController = viewControllers[index] as? UINavigationController {
                if navigationController.viewControllers.count > 0 {
                    let viewController = navigationController.viewControllers[0]
                    viewController.navigationItem.title = navigationItemTitle
                }
            }
        }
    }
}

      }

      2. 最后，我将以下内容添加到AppDelegate＆＃34; didFinishLaunchingWithOptions＆＃34;因此，当非英语手机启动时，应用程序将以其语言启动，而不是默认的英语。

      if NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)! as! String == "es"
{   appLanguage = "es"
}else if NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)! as! String == "fr" {
    appLanguage = "fr"
}else if NSLocale.currentLocale().objectForKey(NSLocaleLanguageCode)! as! String == "de" {
    appLanguage = "de"
}else  {
    appLanguage = "en"
}

      希望这有帮助。

1 个答案:

答案 0 :(得分：1)

试试这个样本：

  

ViewController.swift 

import UIKit

let AppLanguageKey = "AppLanguage"
let AppLanguageDefaultValue = "en"

var appLanguage: String {

get {
    if let language = NSUserDefaults.standardUserDefaults().stringForKey(AppLanguageKey) {
        return language
    } else {
        NSUserDefaults.standardUserDefaults().setValue(AppLanguageDefaultValue, forKey: AppLanguageKey)
        return AppLanguageDefaultValue
    }
}

set(value) {
    NSUserDefaults.standardUserDefaults().setValue((value), forKey: AppLanguageKey)
}

}

class ViewController: UIViewController {

override func viewDidLoad() {
    super.viewDidLoad()

    NSLog("title user lang: \("Title".localizeString)")
    NSLog("title En: \("Title".localizeString("en"))")
    NSLog("title Ru: \("Title".localizeString("ru"))")
    NSLog("title Fr: \("Title".localizeString("fr"))")
    NSLog("title ??: \("Title".localizeString("blabla"))")
    NSLog("title sysem lnag: \("Title".localizeStringUsingSystemLang)")
    // Do any additional setup after loading the view, typically from a nib.

}
}
  

StringExtension.swift 

import Foundation

extension String {

var localizeString: String {
    return localizeString(appLanguage)
}

var localizeStringUsingSystemLang: String {
    return NSLocalizedString(self, comment: "")
}

func localizeString(lang:String?) -> String {

    if let lang = lang {
        if let path = NSBundle.mainBundle().pathForResource(lang, ofType: "lproj") {
            let bundle = NSBundle(path: path)
            return NSLocalizedString(self, tableName: nil, bundle: bundle!, value: "", comment: "")
        }
    }
    return localizeStringUsingSystemLang
}
}
  

Localizable.strings（俄语）

"Title" = "Привет";
  

Localizable.strings（英文）

"Title" = "Hello";
  

Localizable.strings（法语）

"Title" = "Salut";

enter image description here

<强>结果：

enter image description here

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