本地化（不基于系统语言）

本地化分为基于系统语言的，即根据系统的语言来确定显示的内容，语言通过手机的设置来定。以及非基于系统的语言，即语言由软件来定，通过用户设置的语言来确定显示的内容。
一下将是第二种。
首先创建一个名字叫“Hello”的stringFile，至于怎么创建的，可以自行去百度，和第一种创建方法一样。
话不多说，直接上代码。
首先是InternationalControl类（继承与NSObject），控制本地化设置。

////  InternationalControl.h//  本地化（不基于系统语言）////  Created by 鲁杜杨 on 15/9/29.//  Copyright © 2015年 鲁杜杨. All rights reserved.//#import <Foundation/Foundation.h>@interface InternationalControl : NSObject+(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

////  InternationalControl.m//  本地化（不基于系统语言）////  Created by 鲁杜杨 on 15/9/29.//  Copyright © 2015年 鲁杜杨. All rights reserved.//#import "InternationalControl.h"#define USERLANGUAGE  @"userLanguage"static NSBundle *bundel=nil;@implementation InternationalControl//获取当前资源文件+(NSBundle *)bundle{    return bundel;}//初始化语言文件+(void)initUserLanguage{    NSUserDefaults *def=[NSUserDefaults standardUserDefaults];    NSString *string=[def valueForKey:@"userLanguage"];    if (string.length==0) {        //获取系统当前语言（简中zh-Hans,英文en）        string=@"en";        [def setValue:string forKey:@"userLanguage"];        [def synchronize];    }    //获取文件路径    NSString *path=[[NSBundle mainBundle] pathForResource:string ofType:@"lproj"];    bundel=[NSBundle bundleWithPath:path];}//获取应用当前语言+(NSString *)userLanguage{    NSUserDefaults *def=[NSUserDefaults standardUserDefaults];    NSString *string=[def valueForKey:@"userLanguage"];    return string;}//设置当前语言+(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"];    bundel=[NSBundle bundleWithPath:path];    //2.持久化    [def setValue:language forKey:@"userLanguage"];    [def synchronize];}@end

下面是使用：

////  ViewController.m//  本地化（不基于系统语言）////  Created by 鲁杜杨 on 15/9/29.//  Copyright © 2015年 鲁杜杨. All rights reserved.//#import "ViewController.h"#import "InternationalControl.h"@interface ViewController ()@property(nonatomic,retain) UIButton *kBtn;@property(nonatomic,retain) UILabel  *kLabel;@end@implementation ViewController- (void)viewDidLoad{    [super viewDidLoad];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(languageHasChanged) name:@"changeLanguage" object:nil];    [self configViews];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];}-(void)configViews{    [self.view addSubview:self.kBtn];    [self.view addSubview:self.kLabel];    [InternationalControl initUserLanguage];    [self languageHasChanged];}-(void)languageHasChanged{    NSBundle *bundle=[InternationalControl bundle];    NSString *inviteMsg=[bundle localizedStringForKey:@"Invite" value:nil table:@"Hello"];    NSString *buttonIfon=[bundle localizedStringForKey:@"buttonInfo" value:nil table:@"Hello"];    [self.kBtn setTitle:buttonIfon forState:UIControlStateNormal];    self.kLabel.text=inviteMsg;}-(void)changeLanguage{    NSString *lan=[InternationalControl userLanguage];    if ([lan isEqualToString:@"en"]) {        //判断当前语言        [InternationalControl setUserlanguage:@"zh-Hans"];    }else{        [InternationalControl setUserlanguage:@"en"];    }    //改变完成之后发送通知，刷新页面    [[NSNotificationCenter defaultCenter] postNotificationName:@"changeLanguage" object:nil userInfo:nil];}#pragma mark - Setter And Getter-(UIButton *)kBtn{    if (_kBtn==nil) {        _kBtn=[UIButton buttonWithType:UIButtonTypeCustom];        _kBtn.frame=CGRectMake(50, 100, 300, 40);        [_kBtn setBackgroundColor:[UIColor cyanColor]];        [_kBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];        [_kBtn addTarget:self action:@selector(changeLanguage) forControlEvents:UIControlEventTouchUpInside];    }    return _kBtn;}-(UILabel *)kLabel{    if (_kLabel==nil) {        _kLabel=[[UILabel alloc] initWithFrame:CGRectMake(50, 200, 300, 40)];        _kLabel.textColor=[UIColor blackColor];        _kLabel.backgroundColor=[UIColor cyanColor];        _kLabel.textAlignment=NSTextAlignmentCenter;    }    return _kLabel;}@end