procedure TForm7.Button1Click(Sender: TObject);
var
  list: TStringList;
begin
  list := TStringList.Create;
  list.LoadFromFile('cn.txt');
  LoadLangFromStrings(list);
  list.Free;
end;

procedure TForm7.Button2Click(Sender: TObject);
var
  list: TStringList;
begin
  list := TStringList.Create;
  list.LoadFromFile('en.txt');
  LoadLangFromStrings(list);
  list.Free;
end;

  // uses FMX.Platform{$IFDEF MSWINDOWS}, WinAPi.Windows{$ENDIF}; {$R *.fmx}
  // 以下这个函数，获取当前操作系统的语言设置。  比如 Windows 底下，语言为中文，返回 Zh
  // 这个函数支持各种操作系统。

end;

function GetOSLangID: String; {$IFDEF MACOS}var
  Languages: NSArray;
begin
  Languages := TNSLocale.OCClass.preferredLanguages;
  Result := TNSString.Wrap(Languages.objectAtIndex(0)).UTF8String; {$ENDIF}{$IFDEF ANDROID}var
    LocServ: IFMXLocaleService;
  begin
    if TPlatformServices.Current.SupportsPlatformService(IFMXLocaleService, IInterface(LocServ)) then
      Result := LocServ.GetCurrentLangID; {$ENDIF}{$IFDEF MSWINDOWS}var
      buffer: MarshaledString;
      UserLCID: LCID;
      BufLen: Integer;
    begin
      // defaults
      UserLCID := GetUserDefaultLCID;
      BufLen := GetLocaleInfo(UserLCID, LOCALE_SISO639LANGNAME, nil, 0);
      buffer := StrAlloc(BufLen);
      if GetLocaleInfo(UserLCID, LOCALE_SISO639LANGNAME, buffer, BufLen) <> 0 then
        Result := buffer
      else
        Result := 'en';
      StrDispose(buffer); {$ENDIF} end;