仅在iPhone上重新启动后才更改语言 [英] language change only after restart on iphone

问题描述

我正在尝试更改应用程序语言，但是当我关闭应用程序并再次运行后，以main.h语言运行此代码时会遇到麻烦.是否可以在不重新启动的情况下更改语言?

I'm trying to change app language, but when I run this code in main.h language chages after I shut down an App and run it again. Is this possible to change language without restarting?

int main(int argc, char *argv[]) {
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSArray *languages = [NSArray arrayWithObject:@"en_GB"];
    [[NSUserDefaults standardUserDefaults] setObject:languages forKey:@"AppleLanguages"];
    [[NSUserDefaults standardUserDefaults] synchronize];

    int retVal = UIApplicationMain(argc, argv, nil, nil);
    [pool release];
    return retVal;
}

推荐答案

更新答案如何在应用程序中更改语言"

NSLocalizedString()(及其变体)访问NSUserDefaults中的"AppleLanguages"键，以确定用户首选语言的设置是什么.这将返回一系列语言代码，第一个是用户为手机设置的语言代码，如果资源无法使用首选语言，则后续代码将用作备用代码.

NSLocalizedString() (and variants thereof) access the "AppleLanguages" key in NSUserDefaults to determine what the user's settings for preferred languages are. This returns an array of language codes, with the first one being the one set by the user for their phone, and the subsequent ones used as fallbacks if a resource is not available in the preferred language.

如果愿意，可以使用setObject:forKey:方法来设置自己的语言列表，就像您这样做一样，可以覆盖自己的应用程序的全局设置.这将优先于全局设置的值，并返回给应用程序中正在执行本地化的任何代码.的代码如下所示:

You can override the global setting for your own application if you wish by using the setObject:forKey: method to set your own language list just like you've done it. This will take precedence over the globally set value and be returned to any code in your application that is performing localization. The code for this would look something like:

[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:@"de", @"en", @"fr", nil] forKey:@"AppleLanguages"]; 

注意:为了安全起见，请确保使用适当的预定义语言名称.

Note: To be on safe side make sure that you use the appropriate pre-defined languages name.

下面是代码段，但是您必须在项目中拥有所有本地化文件.

Below is the code snippet, but you MUST have all localization files in your project.

@implementation LocalizeLanguage

static NSBundle *bundle = nil;

+(void)initialize {
     NSUserDefaults* defs = [NSUserDefaults standardUserDefaults];
     NSArray* languages = [defs objectForKey:@"AppleLanguages"];
     NSString *current = [[languages objectAtIndex:0] retain];
     [self setLocalizeLanguage:current];
}

/*
  [LocalizeLanguage setLocalizeLanguage:@"en"];
  [LocalizeLanguage setLocalizeLanguage:@"fr"];
*/

+(void)setLocalizeLanguage:(NSString *)lang {
     NSLog(@"preferredLang: %@", lang);
     NSString *path = [[ NSBundle mainBundle ] pathForResource:lang ofType:@"lproj" ];
     bundle = [[NSBundle bundleWithPath:path] retain];
}

+(NSString *)get:(NSString *)key alter:(NSString *)alternate {
    return [bundle localizedStringForKey:key value:alternate table:nil];
}

@end

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