文件只在模擬器上加載而不是在真實設備上（Swift 3）

Question

我想從我的項目中獲得本地化的JSON文件。使用下面的代碼，一切在模擬器上都很好，但不是在真實設備上。

let supportedLocalizations = ["en", "de"] 

    let currentLanguage : String 

    if let locale = Locale.current.languageCode, supportedLocalizations.contains(locale) { 
     currentLanguage = locale 
    } else { 
     currentLanguage = Bundle.main.object(forInfoDictionaryKey: "CFBundleDevelopmentRegion") as! String 
    } 
    let url = Bundle.main.url(forResource: "document", withExtension: "json", subdirectory: nil, localization: currentLanguage)! 
    let jsonData = try! Data(contentsOf: url) 

有沒有人知道原因？

Answer 1

我認爲你使用的是錯誤的方法。假設你爲每個支持的語言JSON文檔，你爲什麼不只是烤語言轉換成文件名，然後加載它像這樣：

var json : NSDictionary! 
let fileName = "document_" + currentLanguage 
if let url = Bundle.main.url(forResource: fileName,       
      withExtension: "json") { 
    if let data = NSData(contentsOf: url) { 
     do { 
      json = try JSONSerialization.jsonObject(with: data as 
        Data, options: .allowFragments) as? NSDictionary 
     } catch { 
      print("Unable to parse \(fileName).json")    } 
     } 

    }