How to force an app to change language in iOS/Objective-C?

Question

I'm having a problem with make app change language immediately like this app.

I've found a lot of similar question like this and this.

But, unfortunately, the related answers to these question don't work for me. I need my app change language immediately when I tap on an cell.

Any ideas? Thank in advance.

Possible duplicate of [manual language selection in an iOS-App (iPhone and iPad)](http://stackoverflow.com/questions/9939885/manual-language-selection-in-an-ios-app-iphone-and-ipad) — Janak LN, Dec 07 '15 at 10:17
@JanakLN: the second link of mine is your link. But I don't think it solve my problem. BTW, tks for your help :) — Saboteur Kid, Dec 07 '15 at 10:24

score 4 · Answer 1 · edited Jan 29 '19 at 09:41

My solution

First you need to create the String File

Go to Project Right Click.
New File->iOS
Under iOS you can see the Resource
Click Resource and you can see the String File among the group of files.
Click that give name whatever you want.

Now you can create the string file below.

"Date"="Date";

"Time"="Time";

"Done"="Done";

 "Back"="Back";

In appDelegate.h

-(NSString*) languageSelectedStringForKey:(NSString*) key
{
  NSString *path;
  AppDelegate *app=(AppDelegate *)[[UIApplication sharedApplication]delegate];
  if(app.currentLanguage==ENGLISH)
  path = [[NSBundle mainBundle] pathForResource:@"en" ofType:@"lproj"];
  else if(app.currentLanguage==TAMIL)
  path = [[NSBundle mainBundle] pathForResource:@"ta-IN" ofType:@"lproj"];
  else if(app.currentLanguage==SPANISH)
  path = [[NSBundle mainBundle] pathForResource:@"es" ofType:@"lproj"];
  else if(app.currentLanguage==FRENCH)
  path = [[NSBundle mainBundle] pathForResource:@"fr" ofType:@"lproj"];
  else if(app.currentLanguage==JAPANESE)
  path = [[NSBundle mainBundle] pathForResource:@"ja" ofType:@"lproj"];
  else if(app.currentLanguage==GERMAN)
  path = [[NSBundle mainBundle] pathForResource:@"de" ofType:@"lproj"];
  else if(app.currentLanguage==KOREAN)
  path = [[NSBundle mainBundle] pathForResource:@"ko" ofType:@"lproj"];
  else if(app.currentLanguage==RUSSIAN)
  path = [[NSBundle mainBundle] pathForResource:@"ru" ofType:@"lproj"];
  else if(app.currentLanguage==HINDI)
  path = [[NSBundle mainBundle] pathForResource:@"hi" ofType:@"lproj"];
  else if(app.currentLanguage==CHINESE)
  path = [[NSBundle mainBundle] pathForResource:@"zh-Hans" ofType:@"lproj"];
  else if(app.currentLanguage==ITALIAN)
  path = [[NSBundle mainBundle] pathForResource:@"it" ofType:@"lproj"];
  else if(app.currentLanguage==PORTUGUESE)
  path = [[NSBundle mainBundle] pathForResource:@"pt" ofType:@"lproj"];
  else if(app.currentLanguage==THAI)
  path = [[NSBundle mainBundle] pathForResource:@"th" ofType:@"lproj"];
  else if(app.currentLanguage==MALAY)
  path = [[NSBundle mainBundle] pathForResource:@"ms" ofType:@"lproj"];
  else if(app.currentLanguage==INDONESIAN)
  path = [[NSBundle mainBundle] pathForResource:@"id" ofType:@"lproj"];
  else if(app.currentLanguage==CHINESE1)
  path = [[NSBundle mainBundle] pathForResource:@"zh-Hant" ofType:@"lproj"];
  else
  {
    path = [[NSBundle mainBundle] pathForResource:@"en" ofType:@"lproj"];
  }
  NSBundle* languageBundle = [NSBundle bundleWithPath:path];
  NSString* str=[languageBundle localizedStringForKey:key value:@"" table:@"LocalizeSTRING"];
  return str;
 }

Call this above method in didFinishLaunchingWithOptions of appDelegate.m

NSString *str=[[[NSUserDefaults standardUserDefaults]objectForKey:@"AppleLanguages"] objectAtIndex:0];

if([str isEqualToString:[NSString stringWithFormat: @"en"]])
{
    currentLanguage=ENGLISH;
    selectedrow=ENGLISH;
}
else if([str isEqualToString:[NSString stringWithFormat: @"ta-IN"]])
{
    currentLanguage=TAMIL;
    selectedrow=TAMIL;
}
else if([str isEqualToString:[NSString stringWithFormat: @"es"]])
{
    currentLanguage=SPANISH;
    selectedrow=SPANISH;
}
else if([str isEqualToString:[NSString stringWithFormat: @"fr"]])
{
    currentLanguage=FRENCH;
    selectedrow=FRENCH;
}
else if([str isEqualToString:[NSString stringWithFormat: @"ja"]])
{
    currentLanguage=JAPANESE;
    selectedrow=JAPANESE;
}
else if([str isEqualToString:[NSString stringWithFormat: @"de"]])
{
    currentLanguage=GERMAN;
    selectedrow=GERMAN;
}
else if([str isEqualToString:[NSString stringWithFormat: @"ko"]])
{
    currentLanguage=KOREAN;
    selectedrow=KOREAN;
}
else if([str isEqualToString:[NSString stringWithFormat: @"ru"]])
{
    currentLanguage=RUSSIAN;
    selectedrow=RUSSIAN;
}
else if([str isEqualToString:[NSString stringWithFormat: @"hi"]])
{
    currentLanguage=HINDI;
    selectedrow=HINDI;
}
else if([str isEqualToString:[NSString stringWithFormat: @"zh-Hans"]])
{
    currentLanguage=CHINESE;
    selectedrow=CHINESE;
}
else if([str isEqualToString:[NSString stringWithFormat: @"it"]])
{
    currentLanguage=ITALIAN;
    selectedrow=ITALIAN;
}
else if([str isEqualToString:[NSString stringWithFormat: @"pt"]])
{
    currentLanguage=PORTUGUESE;
    selectedrow=PORTUGUESE;
}
else if([str isEqualToString:[NSString stringWithFormat: @"th"]])
{
    currentLanguage=THAI;
    selectedrow=THAI;
}
else if([str isEqualToString:[NSString stringWithFormat: @"ms"]])
{
    currentLanguage=MALAY;
    selectedrow=MALAY;
}
else if([str isEqualToString:[NSString stringWithFormat: @"id"]])
{
    currentLanguage=INDONESIAN;
    selectedrow=INDONESIAN;
}

else if([str isEqualToString:[NSString stringWithFormat: @"zh-Hant"]])
{
    currentLanguage=CHINESE1;
    selectedrow=CHINESE1;
}

[self languageSelectedStringForKey:str];

Then in your Required View Controller

-(NSString*) languageSelectedStringForKey:(NSString*) key
{
  app=(AppDelegate *)[[UIApplication sharedApplication]delegate];
  if(app.currentLanguage==ENGLISH)
  path = [[NSBundle mainBundle] pathForResource:@"en" ofType:@"lproj"];
  else if(app.currentLanguage==TAMIL)
  path = [[NSBundle mainBundle] pathForResource:@"ta-IN" ofType:@"lproj"];
  else if(app.currentLanguage==SPANISH)
  path = [[NSBundle mainBundle] pathForResource:@"es" ofType:@"lproj"];
  else if(app.currentLanguage==FRENCH)
  path = [[NSBundle mainBundle] pathForResource:@"fr" ofType:@"lproj"];
  else if(app.currentLanguage==JAPANESE)
  path = [[NSBundle mainBundle] pathForResource:@"ja" ofType:@"lproj"];
  else if(app.currentLanguage==GERMAN)
  path = [[NSBundle mainBundle] pathForResource:@"de" ofType:@"lproj"];
  else if(app.currentLanguage==KOREAN)
  path = [[NSBundle mainBundle] pathForResource:@"ko" ofType:@"lproj"];
  else if(app.currentLanguage==RUSSIAN)
  path = [[NSBundle mainBundle] pathForResource:@"ru" ofType:@"lproj"];
  else if(app.currentLanguage==HINDI)
  path = [[NSBundle mainBundle] pathForResource:@"hi" ofType:@"lproj"];
  else if(app.currentLanguage==CHINESE)
  path = [[NSBundle mainBundle] pathForResource:@"zh-Hans" ofType:@"lproj"];
  else if(app.currentLanguage==ITALIAN)
  path = [[NSBundle mainBundle] pathForResource:@"it" ofType:@"lproj"];
  else if(app.currentLanguage==PORTUGUESE)
  path = [[NSBundle mainBundle] pathForResource:@"pt" ofType:@"lproj"];
  else if(app.currentLanguage==THAI)
  path = [[NSBundle mainBundle] pathForResource:@"th" ofType:@"lproj"];
  else if(app.currentLanguage==MALAY)
  path = [[NSBundle mainBundle] pathForResource:@"ms" ofType:@"lproj"];
  else if(app.currentLanguage==INDONESIAN)
  path = [[NSBundle mainBundle] pathForResource:@"id" ofType:@"lproj"];
  else if(app.currentLanguage==CHINESE1)
  path = [[NSBundle mainBundle] pathForResource:@"zh-Hant" ofType:@"lproj"];
  else
  {
    path = [[NSBundle mainBundle] pathForResource:@"en" ofType:@"lproj"];
  }
  NSBundle* languageBundle = [NSBundle bundleWithPath:path];
  NSString* str=[languageBundle localizedStringForKey:key value:@"" table:@"LocalizeSTRING"];
  return str;
}

Call this above method in your viewDidLoad and viewWillAppear method or Call that method where you want to call

- (void)viewWillAppear:(BOOL)animated
{
  //If you want to set language in label,TextFiled
  localizeBackLabel.text=[self languageSelectedStringForKey:@"Back"];
  localizeDoneLabel.text=[self languageSelectedStringForKey:@"Done"];
  localizeTimeLabel.text=[self languageSelectedStringForKey:@"Time"];
  localizeDateLabel.text=[self languageSelectedStringForKey:@"Date"];

  //If you want to set language in button
  [yourButton setTitle:[self languageSelectedStringForKey:@"Back"]; forState:UIControlStateNormal];
  [yourButton setTitle:[self languageSelectedStringForKey:@"Done"]; forState:UIControlStateNormal];

   //If you want to set the Language in cell     
   cell.labelHomeList.text=[self languageSelectedStringForKey:@"Date"];
   cell.labelHomeList.text=[self languageSelectedStringForKey:@"Time"];
}

Finally if you want to change the language to other language.For example in (Settings) table you have two languages.If you want to change it to other languages please follow the below coding

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{  
   AppDelegate *app=(AppDelegate *)[[UIApplication sharedApplication]delegate];
   app.selectedrow=indexPath.row;
   if (indexPath.row==0)
   {
     app.currentLanguage=ENGLISH;
     [[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:@"en", nil]forKey:@"AppleLanguages"];
     [[NSUserDefaults standardUserDefaults] synchronize];
      NSLog(@"%d", [[NSUserDefaults standardUserDefaults] synchronize]);
    }
    else 
    {
      app.currentLanguage=CHINESE1;
      [[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:@"zh-Hant", nil]forKey:@"AppleLanguages"];
      [[NSUserDefaults standardUserDefaults] synchronize];
    }
}

it works perfectly.

I wanted to do exactly that one month ago. :) Nice idea. – Stefan Dec 07 '15 at 10:53 — Stefan, Dec 07 '15 at 10:53

Olla Ashour · Answer 2 · 2015-12-07T11:09:09.533

use reloadData.

[YourUITableView reloadData];

and don't forget to save your language in a NSUserDefaults,

 [[NSUserDefaults standardUserDefaults] setValue:lang forKey:LANG];
 [[NSUserDefaults standardUserDefaults] synchronize];

so you can load your views and storyboards accordingly because when your tableView is reloaded, you can add your check for language to display the correct view in the cellForRowAtIndexPath method.

Edit.....

If you want to use NSNotification, register your observer in your viewDidLoad, as this

[[NSNotificationCenter defaultCenter] addObserver:self
                                      selector:@selector(updateLanguage:)
                                             name:@"updateLanguageObserver"
                                           object:nil];

and in your didSelectRowAtIndexPath add the listener

[[NSNotificationCenter defaultCenter] postNotificationName:@"updateLanguageObserver" object:self userInfo:nil];

which will call your method updateLanguage where you can handle your localization and tableView reloading.

and don't forget in the viewController that adds the listener to remove observer as such

 - (void)dealloc {
     [[NSNotificationCenter defaultCenter] removeObserver:self];
 }

I've already do this, but I think there a better way like NSNotification or delegate. BTW, thank for your help :) — Saboteur Kid, Dec 07 '15 at 10:43
I added some info in my answer for NSNotification. Hope it helps. — Olla Ashour, Dec 07 '15 at 11:02

score 0 · Answer 3 · answered Jul 06 '17 at 11:55

0

You should look at this once : HERE

answered Jul 06 '17 at 11:55

dmaulikr

458
5
20

score -1 · Accepted Answer · edited May 23 '17 at 12:23

-1

I think that this will solve your problem.

I had the same problem 1 month ago.

You can follow this tutorial.

Example:

In your .strings file you put translation: "hello" = "HOLA MUNDO";

#import "LocalizationSystem.h"

LocalizationSetLanguage(@"Spanish");
CCLabel* label = [CCLabel labelWithString:AMLocalizedString(@"hello",@"Hello World") fontName:@"Marker Felt" fontSize:32];

EDIT: This is additional information as user asks in comment:
If you want to translate whole view where your language option is changed, I propose you to make method that will be called everytime you change language:

-(void)translateOnChoose {
self.label.text = AMLocalizedString(@"hello",@"Hello World");
}

edited May 23 '17 at 12:23

Community

1
1

answered Dec 07 '15 at 10:12

Stefan

1,283
15
33

3

Your answer becomes essentially empty the moment those links break. You should post at least an outline of the solution, and/or source code / pseudo code. – Nicolas Miari Dec 07 '15 at 10:17
I've posted example code. Hope this is fine now. Thanks for hint. – Stefan Dec 07 '15 at 10:19
But this way, how can I force my view controller to run viewDidLoad? (I put all my code in viewDidLoad). This solution just work when I put my code in viewWillAppear or viewDidAppear. – Saboteur Kid Dec 07 '15 at 10:34
You mean how to translate everything in that moment when you change your language in app? Well, you must get hands dirty and make method to translate everything it needs to be translated in that view. – Stefan Dec 07 '15 at 10:36
Yes, I just get confused. Because the app I've mentioned can do that. – Saboteur Kid Dec 07 '15 at 10:39
@Stefan: tks, I've thinked about something like delegate or NSNotificationCenter to solve my problem. – Saboteur Kid Dec 07 '15 at 10:42
Yes you can do that, but be carefull with deallon of that notification. :) Best regards. – Stefan Dec 07 '15 at 10:44
this no answer at all IMO – Daij-Djan Dec 07 '15 at 11:16
because you only a provide some link without any explanation even.. you then show some code that does.. use some other localize macro... -- the only way you could even get this is by reading the link and then.. who knows if it even correct/helpful/suited ... because I don't think though btw – Daij-Djan Dec 07 '15 at 12:19
I gave this kind of answer because asker said he knows this way, just don't know how to forse app to translate that view where language selection is presented. – Stefan Dec 07 '15 at 12:22

How to force an app to change language in iOS/Objective-C?

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