How can I translate the Firemonkey's Resource Strings?

Question

I'm иrazilian and I need the Firemonkey's Resource Strings in my language, for example when I use the dialogs. I couldn't find a way to translate it. Does someone know how to do it?

Answer 1

What you need is something like this, but for FMX. In a quick search, the only file that I've found in help for Delphi XE2 is FMX.Consts. You take that file, translate it, and then put the translated file in your project.

Take care when Delphi got an update. The original file can be changed and you will need to update your translation. Also, you will probably want to change any others files that have Resource Strings, and are in use by your project.

Finally, I'm not expert in this, but if you are planing use multi-language, this could be not the better approach.

Answer 2

Translating FMX forms is done with the TLang component, although that won't work for most dialogs.

Answer 3

You can change dialogs using FMX.Consts.pas, but it fixes the language during compilation. If you want to check the language version of the host OS in runtime, you should correct FMX.Platform.Android.pas or FMX.Platform.iOS.pas.

For Android, in FMX.Platform.Android.pas, in procedure TPlatformAndroid.MessageDialog... find ButtonCaptions and surround it with your own function, for example: ZSTranslate( ButtonCaptions[B]). Declare ZSTranslate in the following way:

function ZSTranslate(txt: String):String;
var
  LocaleSvc: IFMXLocaleService;
begin
  LocaleSvc :=  TPlatformServices.Current.GetPlatformService(IFMXLocaleService) as IFMXLocaleService;
 result:=txt;
 if LocaleSvc.GetCurrentLangID ='your_language_two_letter_id' then
 begin
   if txt= 'Yes' then
    result := 'yes in your language'
    else
     if txt= 'No' then
      result := 'no in your language'
    else
     if txt= 'Confirm' then
      result := 'confirm in your language'
        else
     if txt= 'Cancel' then
      result := 'cancel in your language';
 end
end;

Place ZSTranslate somewhere above TPlatformAndroid.MessageDialog in a copy of FMX.Platform.Android.pas, and add this corrected version of FMX.Platform.Android.pas to your project.

Note that above example is very simple, and as far as I remember there is unsolved case in Embarcadero quality system, suggesting translate method here (so TLang should work ok). I did not try with translate, my version did the job (as there are just a few button labels in dialogs and I wanted only two different languages).

For iOS you should look in FMX.Platform.iOS.pas for function TPlatformCocoaTouch.MessageDialog. Please note, that there are two overloaded versions. There are also MsgTitles and ButtonCaptions in iOS, as dialogs at iOS show captions.

PS. For Polish I had to correct also GetCurrentLangID method, because it always returned 'en' - please double-check the result for your language. The versions that worked for me: in FMX.Platform.iOS.pas:

function TPlatformCocoaTouch.GetCurrentLangID: string;
var
  lngs : NSArray;
  CurrentLocale: NSLocale;
  LanguageISO: NSString;
begin
  lngs := TNSLocale.OCClass.preferredLanguages;
  LanguageISO:= TNSString.Wrap(lngs.objectAtIndex(0));
  //CurrentLocale := TNSLocale.Wrap(TNSLocale.OCClass.currentLocale);
  //LanguageISO := TNSString.Wrap(CurrentLocale.objectForKey((NSLocaleLanguageCode as ILocalObject).GetObjectID));
  Result := UTF8ToString(LanguageISO.UTF8String);
  if Length(Result) > 2 then
    Delete(Result, 3, MaxInt);
end;

in FMX.Platform.Android.pas:

function TPlatformAndroid.GetCurrentLangID: string;
var
  Locale: JLocale;
begin
  Locale := TJLocale.JavaClass.getDefault;
  Result := JStringToString(Locale.getLanguage);//getISO3Language); //zs
  if Length(Result) > 2 then
    Delete(Result, 3, MaxInt);
end;