change language option in ios App - ios

Question

want to add a possibility to change language in application in my app, so when the current iPhone language is English. but user set turkish in app for my application I have to force my application to localize in turkish.
i am already add file to setLanguage
LocalizationSystem.h
LocalizationSystem.m
on button Action i write given below code:
if([sender tag]==0)
{
LocalizationSetLanguage(#"en");
NSString * currentL = LocalizationGetLanguage;
NSLog(#"currentL EN:%#",currentL);
}
else
{
LocalizationSetLanguage(#"tr");
NSString * currentL = LocalizationGetLanguage;
NSLog(#"currentL TR:%#",currentL);
}
this code doesn't change language. In both NSLog it prints give below line:
2014-09-11 15:54:30.640 uyarbeni[6480:70b] currentL EN:en
2014-09-11 15:54:30.640 uyarbeni[6480:70b] currentL TR:en
when i look through the code in LocalizationSystem.m file
- (void) setLanguage:(NSString*) l
{
NSLog(#"preferredLang: %#", l);
NSString *path = [[ NSBundle mainBundle ] pathForResource:l ofType:#"lproj" ];
if (path == nil)
[self resetLocalization];
else
bundle = [NSBundle bundleWithPath:path] ;
}
Please Help me to solve the problem.
But When i select language from device setting then language get change.

Answer 1

You will have to set property in #"AppleLanguages" to have the selected language code by setting it via NSUserDefaults.
Like so:
[[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:<your code>, nil] forKey:#"AppleLanguages"];

Answer 2

I use it in my application, to change language use: [NSBundle setLanguage:#"tr"];
To use localized resources: [[NSBundle localBundle] pathForResource:#"List" ofType:#"plist"];
Import header in ProjectName-Prefix.pch
//.h
#import <Foundation/Foundation.h>
#interface NSBundle (Language)
+ (NSBundle *)localBundle;
+ (void)setLanguage:(NSString*)language;
#end
//.m
#import "NSBundle + Language.h"
#import <objc/runtime.h>
NSString *currentLanguage;
static const char _bundle=0;
#interface BundleEx : NSBundle
#end
#implementation BundleEx
-(NSString*)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName
{
NSBundle* bundle=objc_getAssociatedObject(self, &_bundle);
return bundle ? [bundle localizedStringForKey:key value:value table:tableName] : [super localizedStringForKey:key value:value table:tableName];
}
#end
#implementation NSBundle (Language)
+ (NSBundle *)localBundle
{
if (currentLanguage)
{
NSString *path = [[NSBundle mainBundle] pathForResource:currentLanguage ofType:#"lproj"];
return [NSBundle bundleWithPath:path];
}
else
{
return [NSBundle mainBundle];
}
}
+(void)setLanguage:(NSString*)language
{
currentLanguage = language;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^
{
object_setClass([NSBundle mainBundle],[BundleEx class]);
});
objc_setAssociatedObject([NSBundle mainBundle], &_bundle, language ? [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:#"lproj"]] : nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
#end