iOS如何重新启动应用程序以更改语言Swift 4 [英] iOS How to restart app for changing language Swift 4
问题描述
我正在使用多语言应用程序,我想在个人资料用户中手动更改语言.
I work with multi language app, i want to change language manually in profile user.
我已经有Localization.string
I already have Localization.string
如果我更改设备语言,则应用程序中的语言会更改为.
And if i change device language, language in app changin to.
但是我想从用户个人资料示例中手动更改语言:
But i want to change language manually from user profile example:
为此,我使用下一个代码:
And for this i use next code:
private func changeToLanguage(_ langCode: String) {
if Bundle.main.preferredLocalizations.first != langCode {
let message = "In order to change the language, the App must be closed and reopened by you."
let confirmAlertCtrl = UIAlertController(title: "App restart required", message: message, preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "Close now", style: .destructive) { _ in
UserDefaults.standard.set([langCode], forKey: "AppleLanguages")
UserDefaults.standard.synchronize()
exit(EXIT_SUCCESS)
}
confirmAlertCtrl.addAction(confirmAction)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
confirmAlertCtrl.addAction(cancelAction)
present(confirmAlertCtrl, animated: true, completion: nil)
}
UserDefaults.standard.set([langCode], forKey: "AppleLanguages")
UserDefaults.standard.synchronize()
}
@IBAction func didPressChangeLanguageButton() {
let message = "Change language of this app including its content."
let sheetCtrl = UIAlertController(title: "Choose language", message: message, preferredStyle: .actionSheet)
for languageCode in Bundle.main.localizations.filter({ $0 != "Base" }) {
let langName = Locale.current.localizedString(forLanguageCode: languageCode)
let action = UIAlertAction(title: langName, style: .default) { _ in
self.changeToLanguage(languageCode) // see step #2
}
sheetCtrl.addAction(action)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
sheetCtrl.addAction(cancelAction)
sheetCtrl.popoverPresentationController?.sourceView = self.view
sheetCtrl.popoverPresentationController?.sourceRect = self.changeLanguageButton.frame
present(sheetCtrl, animated: true, completion: nil)
}
我使用这个捆绑包:
Bundle.main.localizations.filter({ $0 != "Base" })
Locale.current.localizedString(forLanguageCode: "en")
对于此代码,我有:
当我按下按钮时,我得到了错误:
And when i press the button i get error:
原因:添加到UIAlertController的动作必须具有标题"
reason: 'Actions added to UIAlertController must have a title'
我不知道问题出在哪里.
I have no idea where the problem.
推荐答案
在我最近的应用程序中,我使用了此 localize ,它非常简单,并且没有关闭应用程序,我们可以根据语言切换应用程序.
in my recent app I used this localize , its simple and with out closing app we can switch the app based on the language .
将localize.swift文件添加到您的项目中,最后在需要的地方调用以下函数
add the localize.swift file to your project and finally call the following func where you need
if let pre = Bundle.main.preferredLocalizations.first, !pre.isEmpty {
if pre == Language.english.rawValue{
Language.language = Language.arabic
}else{
Language.language = Language.english
}
}
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