swift----- 国际化之app内切换语言
�1. 首先创建个工程不说了。。。。。。。。
2. 创建一个Strings File 命名为 Localizable.strings
3.选择Localizable.strings文件 点击localizaiton 选择english
4, 选择项目 info 添加语言
选择 Chinese(simplified)为例， 去掉main.storyboard和LaunchScreen.storyboard选项
发现Localizable.strings 多了两个文件，这就是多语言配置文件
中文配置文件（注意后边要有分号）
英文配置文件 （注意后边要有分号）
接下来就代码啦~~~~~~~
1.创建一个LanguageHelper.swift ，这个类包含设置语言，获取语言，初始化
import UIKit
let UserLanguage = "UserLanguage"
let AppleLanguages = "AppleLanguages"
class LanguageHelper: NSObject {
static let shareInstance = LanguageHelper()
let def = UserDefaults.standard
var bundle : Bundle?
class func getString(key:String) -> String{
let bundle = LanguageHelper.shareInstance.bundle
let str = bundle?.localizedString(forKey: key, value: nil, table: nil)
return str!
}
func initUserLanguage() {
var string:String = def.value(forKey: UserLanguage) as! String? ?? ""
if string == "" {
let languages = def.object(forKey: AppleLanguages) as? NSArray
if languages?.count != 0 {
let current = languages?.object(at: 0) as? String
if current != nil {
string = current!
def.set(current, forKey: UserLanguage)
def.synchronize()
}
}
}
string = string.replacingOccurrences(of: "-CN", with: "")
string = string.replacingOccurrences(of: "-US", with: "")
var path = Bundle.main.path(forResource:string , ofType: "lproj")
if path == nil {
path = Bundle.main.path(forResource:"en" , ofType: "lproj")
}
bundle = Bundle(path: path!)
}
func setLanguage(langeuage:String) {
let path = Bundle.main.path(forResource:langeuage , ofType: "lproj")
bundle = Bundle(path: path!)
def.set(langeuage, forKey: UserLanguage)
def.synchronize()
}
}
2.在appdelegate中第一次打开程序初始化程序语言
LanguageHelper.shareInstance.initUserLanguage()
3.添加修改语言通知
NotificationCenter.default.addObserver(self, selector: #selector(ViewController.changeLanguage), name: NSNotification.Name(rawValue: "LanguageChanged"), object: nil)
整页代码：自己研究去吧~~~~~~~
import UIKit
class ViewController: UIViewController {
var lab: UILabel?
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.white
NotificationCenter.default.addObserver(self, selector: #selector(ViewController.changeLanguage), name: NSNotification.Name(rawValue: "LanguageChanged"), object: nil)
let button = UIButton(frame:CGRect(x:10, y:150, width:50, height:50))
button.addTarget(self, action: #selector(ViewController.changelangage2), for: UIControlEvents.touchUpInside)
self.view.addSubview(button)
button.backgroundColor = UIColor.red
let button2 = UIButton(frame:CGRect(x:100, y:150, width:100, height:30))
button2.addTarget(self, action: #selector(ViewController.changelangage), for: UIControlEvents.touchUpInside)
self.view.addSubview(button2)
button2.backgroundColor = UIColor.green
lab = UILabel.init(frame: .init(x: 10, y: 100, width: 300, height: 20))
self.view.addSubview(lab!)
// lab.text = NSLocalizedString("GOOD_MORNING",comment:"default")
lab?.text = LanguageHelper.getString(key: "GOOD_MORNING")
}
func changeLanguage() -> Void {
lab?.text = LanguageHelper.getString(key: "GOOD_MORNING")
}
func changelangage() -> Void {
LanguageHelper.shareInstance.setLanguage(langeuage: "en")
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "LanguageChanged"), object: nil)
}
func changelangage2() -> Void {
LanguageHelper.shareInstance.setLanguage(langeuage: "zh-Hans")
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "LanguageChanged"), object: nil)
}
}
代码传送门：https://github.com/dljike/LanguageChage
