1. 首先我们需要一个建一个工具类
//.h中
@interface LJMInternationalController : UIViewController
+(NSBundle *)bundle;//获取当前资源文件
+(void)initUserLanguage;//初始化语言文件
+(NSString *)userLanguage;//获取应用当前语言
+(void)setUserlanguage:(NSString *)language;//设置当前语言
@end
//.m中
static NSBundle *bundle = nil;
+ ( NSBundle * )bundle{
return bundle;
}
+(void)initUserLanguage{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSString *string = [def valueForKey:@"userLanguage"];
if(string.length == 0)
{
//获取系统当前语言版本(中文zh-Hans,英文en)
NSArray* languages = [def objectForKey:@"AppleLanguages"];
NSString *current = [languages objectAtIndex:0];
string = current;
[def setValue:current forKey:@"userLanguage"];
[def synchronize];//持久化，不加的话不会保存
}
//获取文件路径
NSString *path = [[NSBundle mainBundle] pathForResource:string ofType:@"lproj"];
bundle = [NSBundle bundleWithPath:path];//生成bundle
}
+(NSString *)userLanguage
{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSString *language = [def valueForKey:@"userLanguage"];
return language;
}
+(void)setUserlanguage:(NSString *)language
{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
//1.第一步改变bundle的值
NSString *path = [[NSBundle mainBundle] pathForResource:language ofType:@"lproj" ];
bundle = [NSBundle bundleWithPath:path];
//2.持久化
[def setValue:language forKey:@"userLanguage"];
[def synchronize];
}
2.我们需要创建一个切换视图，其实只要创建两个Button就足够了，我们需要的只是在其点击事件里切换语言并且发送通知
- (void)viewDidLoad
{
//注册通知，用于接收改变语言的通知
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeLanguage) name:@"changeLanguage" object:nil];
[LJMInternationalController initUserLanguage];//初始化应用语言
NSBundle *bundle = [LJMInternationalController bundle];
NSString *buttonInfo = [bundle localizedStringForKey:@"English" value:nil table:@"String"];//
NSString *buttonInfo1 = [bundle localizedStringForKey:@"Chinese" value:nil table:@"String"];
[_changeToChinese setTitle:buttonInfo1 forState:UIControlStateNormal];
[_changeToEnglish setTitle:buttonInfo forState:UIControlStateNormal];
[super viewDidLoad];
}
-(void)changeLanguage
{
[_changeToChinese setTitle:[[LJMInternationalController bundle] localizedStringForKey:@"Chinese" value:nil table:@"String"] forState:UIControlStateNormal];
[_changeToEnglish setTitle:[[LJMInternationalController bundle] localizedStringForKey:@"English" value:nil table:@"String"] forState:UIControlStateNormal];
}
- (IBAction)ToEnglish:(id)sender
{
[LJMInternationalController setUserlanguage:@"en"];
[[NSNotificationCenter defaultCenter] postNotificationName:@"changeLanguage" object:nil];
}
- (IBAction)toChinese:(id)sender
{
[LJMInternationalController setUserlanguage:@"zh-Hans"];
[[NSNotificationCenter defaultCenter] postNotificationName:@"changeLanguage" object:nil];
}
3.我看到有很多文章说要在每一个需要国际化的页面都要接收通知，其实还有更简单地方法，我们只需要在一个地方接收通知就好了，那就是在我们的tabbarController里面，只需要在ViewWillAppear里面接收通知就好了
-(void)viewWillAppear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(ChangeLanguage) name:@"changeLanguage" object:nil];
[super viewWillAppear:animated];
}
-(void)ChangeLanguage
{
self.viewControllers=nil;
[self makeTabBarItem];//重新定制tabbar
}
4.当然每个页面需要国际化的地方要做处理，这里就只举一个例子好了
//#import "LJMInternationalController.h"//引入头文件
//将所需要显示的内容设置成属性
@property(nonatomic,copy)NSString * ModeifyPassWord;
@property(nonatomic,copy)NSString * MyIntegral;
@property(nonatomic,copy)NSString * ChangeLanguage;
@property(nonatomic,copy)NSString * Exit;
//在viewDidLoad方法里初始化
- (void)viewDidLoad
{
[super viewDidLoad];
[LJMInternationalController initUserLanguage];//初始化应用语言
NSBundle *bundle = [LJMInternationalController bundle];
_ModeifyPassWord = [bundle localizedStringForKey:@"ModeifyPassWord" value:nil table:@"String"];
_MyIntegral = [bundle localizedStringForKey:@"MyIntegral" value:nil table:@"String"];
_ChangeLanguage = [bundle localizedStringForKey:@"ChangeLanguage" value:nil table:@"String"];
_Exit = [bundle localizedStringForKey:@"Exit" value:nil table:@"String"]；
}
5最后完成
