Language change after selecting a option from the drop down list in iphone

I was working with language localisation .I want to change the language of my application whenever i select a language from a drop down list which is present in my application 开发者_运维技巧, that is it should change the language without changing the language of device .please suggest me how can i implement

Thanks in advance

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Have a look at this: How to force NSLocalizedString to use a specific language

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You can do this, but it won't play nicely with the built in localization functions in Foundation (e.g. NSLocalizedString), so you'll need to ignore them and write your own string-getting function, XIB-loading path, etc.

The question and answer here covers how to access localizations in the bundle on the fly like this: Overriding preferred strings localization on the fly for testing

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You can force the "AppleLanguages" user default. The example below shows how can be done; in particular here I'm switching the first (default) with the second language.

    NSArray *lang = [[NSUserDefaults standardUserDefaults] arrayForKey:@"AppleLanguages"];
    NSLog(@"current lang: %@",lang);
    [[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:
                                                      [lang objectAtIndex:1],
                                                      [lang objectAtIndex:0],
                                                      nil]
                                              forKey:@"AppleLanguages"];

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    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    NSMutableArray *languages = [NSMutableArray arrayWithArray:[defaults objectForKey:@"AppleLanguages"]];

    [languages replaceObjectAtIndex:0 withObject:@"fr"];

    [defaults setObject:languages forKey:@"AppleLanguages"];
    [defaults synchronize];

This is setting the language to French. Just put on position 0 what language you want to be loaded.