ps：有一种需求，叫做app内语言切换，我的这个版本，代码更具体一些，请勿喷
ps：哎，有一种需求，叫做网络下载语言包进行多语言切换，目的是再添加语言支持，不用另发版本，此功能下回分析～～
语言切换.PNG
0.文件结构介绍
InternationalControl ——控制切换语言工具类（关键）
ALCommentMethod ——便捷设置文字工具类
DLLanguageObject ——语言附加信息实体类，充当数据载体功能
ALChooseLanguageVC ——选择语言具体控制器，业务具体相关，仅做参考，请自行实现
1.相关宏
1）便捷切换文字
#define DLLocal(localName) [ALCommentMethod localizationString:localName]
2）相关通知
//1.添加通知
#define ADDChangeLanguageNotification [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(changeLanguage) name:AL_NOTIFICATION_CHANGE_LANGUAGE object:nil]
//2.发送通知
#define POSTChangeLanguageInfoNotification [[NSNotificationCenter defaultCenter] postNotificationMainThreadName:AL_NOTIFICATION_CHANGE_LANGUAGE object:nil]
//3.移除通知
#define REMOVEUpdateUserInfoNotification [[NSNotificationCenter defaultCenter] removeObserver:self]
2.接受通知后进行刷新文字(此处处理方式，总觉着不够技术含量，若有更好的方式，请告知)
#pragma mark - 初始化
- (void)initToolView{
//...
self.bottomToolView = bottomToolView;
ADDChangeLanguageNotification;//添加通知
}
- (void)changeLanguage{
//重新刷新一下界面文字
self.appName.text = DLLocal(@"bottom_tool_choose_app");
[self setNeedsLayout];
}
- (void)dealloc{
REMOVEUpdateUserInfoNotification;//移除通知
}
3.代码
1) InternationalControl 控制切换语言工具类（关键）
#import <Foundation/Foundation.h>
@class DLLanguageObject;
@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 */
+(DLLanguageObject *)currentLanguage;/**< 获取应用当前语言 */
+(NSString *)userLanguageEnOrZh; /**< 返回 en 或者 zh */
#pragma mark - 定制语言
+(void)setUserlanguage:(DLLanguageObject *)lanObj;/**< 设置当前语言 */
+ (NSString *)currentSysLanguage;/**< 获取当前系统语言 */
@end
#import "InternationalControl.h"
#import "DLLanguageObject.h"
#define kUserLanguageObject @"userLanguageObject"
#define kAppleLanguages @"AppleLanguages"
@implementation InternationalControl
static NSBundle *bundle = nil;
static DLLanguageObject *langObj = nil;
+ ( NSBundle * )bundle{
return bundle;
}
+(void)initUserLanguage{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSData *lanDataBox = [def valueForKey:kUserLanguageObject];
langObj = [NSKeyedUnarchiver unarchiveObjectWithData:lanDataBox];
if(!langObj){
//获取系统当前语言版本(中文zh-Hans,英文en)
NSArray* languages = [def objectForKey:kAppleLanguages];
NSString *current = [languages objectAtIndex:0];
if ([current isEqualToString:@"zh-Hans-CN"]) {
langObj = [DLLanguageObject languageType:DLLanguageTypeCn];
}else{
langObj = [DLLanguageObject languageType:DLLanguageTypeEn];
}
NSData *lanData = [NSKeyedArchiver archivedDataWithRootObject:langObj];
[def setObject:lanData forKey:kUserLanguageObject];
[def synchronize];//持久化，不加的话不会保存
}
//获取文件路径
NSString *path = [[NSBundle mainBundle] pathForResource:langObj.lanCode ofType:@"lproj"];
bundle = [NSBundle bundleWithPath:path];//生成bundle
}
#pragma mark - 定制语言
+(void)setUserlanguage:(DLLanguageObject *)lanObj{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
//1.第一步改变bundle的值
NSString *path = [[NSBundle mainBundle] pathForResource:lanObj.lanCode ofType:@"lproj" ];
bundle = [NSBundle bundleWithPath:path];
//2.改变记录
langObj = lanObj;
//3.持久化
NSData *lanData = [NSKeyedArchiver archivedDataWithRootObject:lanObj];
[def setObject:lanData forKey:kUserLanguageObject];
[def synchronize];//持久化，不加的话不会保存
}
+(NSString *)userLanguageEnOrZh{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSData *lanDataBox = [def valueForKey:kUserLanguageObject];
DLLanguageObject *lanObj = [NSKeyedUnarchiver unarchiveObjectWithData:lanDataBox];
if ([lanObj.lanCode isEqualToString:@"en"]){
return @"en";
} else{
return @"zh";
}
}
+(NSString *)userLanguage{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSData *lanDataBox = [def valueForKey:kUserLanguageObject];
DLLanguageObject *lanObj = [NSKeyedUnarchiver unarchiveObjectWithData:lanDataBox];
return lanObj.lanCode;
}
+(DLLanguageObject *)currentLanguage{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSData *lanDataBox = [def valueForKey:kUserLanguageObject];
DLLanguageObject *lanObj = [NSKeyedUnarchiver unarchiveObjectWithData:lanDataBox];
return lanObj;
}
+ (NSString *)currentSysLanguage{
NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
NSArray* languages = [def objectForKey:kAppleLanguages];
return [languages objectAtIndex:0];
}
@end
2)ALCommentMethod 便捷设置文字工具类
#import <Foundation/Foundation.h>
#import "InternationalControl.h"
@interface ALCommentMethod : NSObject
+ (NSString *)localizationString:(NSString *)key;
@end
#import "ALCommentMethod.h"
@implementation ALCommentMethod
+ (NSString *)localizationString:(NSString *)key{
NSBundle *langBundle = [InternationalControl bundle];
NSString *str = [langBundle localizedStringForKey:key value:@"" table:nil];
return str;
}
@end
3)DLLanguageObject 语言附加信息实体类，充当数据载体功能
#import <Foundation/Foundation.h>
typedef NS_ENUM(NSUInteger,DLLanguageType){
DLLanguageTypeEn = 0,
DLLanguageTypeCn
};
@interface DLLanguageObject : NSObject<NSCoding>
@property (nonatomic,assign) DLLanguageType langType;/**< 语言类型 */
@property (nonatomic,strong) NSString *lanCode;/**< 语言代码字符串 */
@property (nonatomic,strong) NSString *titile;/**< 标题 */
@property (nonatomic,strong) NSString *subTitle;/**< 子标题 */
@property (nonatomic,assign) BOOL isSelected;/**< 选中与否 */
#pragma mark - 快速创建
+ (instancetype)languageType:(DLLanguageType)langType;
- (instancetype)initWithLanType:(DLLanguageType)langType;
@end
#import "DLLanguageObject.h"
#define kEnLan @"en"
#define kCnLan @"zh-Hans"
@implementation DLLanguageObject
+ (instancetype)languageType:(DLLanguageType)langType{
return [[self alloc] initWithLanType:langType];
}
- (instancetype)initWithLanType:(DLLanguageType)langType{
self = [super init];
if (self) {
self.langType = langType;
}
return self;
}
- (void)setLangType:(DLLanguageType)langType{
_langType = langType;
switch (langType) {
case DLLanguageTypeEn:{
_lanCode = kEnLan;
self.titile = @"English";
self.subTitle = @"English";
break;
}
case DLLanguageTypeCn:{
_lanCode = kCnLan;
self.titile = @"简体中文";
self.subTitle = @"Chinese,Simpified";
break;
}
default:
break;
}
}
#pragma mark -
//This is important to for saving the alarm object in user defaults
-(void)encodeWithCoder:(NSCoder *)encoder{
[encoder encodeInteger:self.langType forKey:@"langType"];
[encoder encodeObject:self.lanCode forKey:@"lanCode"];
[encoder encodeObject:self.titile forKey:@"titile"];
[encoder encodeObject:self.subTitle forKey:@"subTitle"];
[encoder encodeBool:self.isSelected forKey:@"isSelected"];
}
//This is important to for loading the alarm object from user defaults
-(id)initWithCoder:(NSCoder *)decoder{
self.langType = [decoder decodeIntegerForKey:@"langType"];
self.lanCode = [decoder decodeObjectForKey:@"lanCode"];
self.titile = [decoder decodeObjectForKey:@"titile"];
self.subTitle = [decoder decodeObjectForKey:@"subTitle"];
self.isSelected = [decoder decodeBoolForKey:@"isSelected"];
return self;
}
@end
4)ALChooseLanguageVC 选择语言具体控制器，业务具体相关，仅做参考，请自行实现
#import "ALChooseLanguageVC.h"
#import "ALLanguageCell.h"
#import "DLLanguageObject.h"
#import "InternationalControl.h"
@interface ALChooseLanguageVC ()
@property (nonatomic,strong) NSMutableArray *dataList;/**< 数据源 */
@property (nonatomic,strong) DLLanguageObject *selectedLan;/**< 选中的语言 */
@end
@implementation ALChooseLanguageVC
- (NSMutableArray *)dataList{
if (!_dataList) {
_dataList = [NSMutableArray array];
DLLanguageObject *lanEn = [DLLanguageObject languageType:DLLanguageTypeEn];
DLLanguageObject *lanCn = [DLLanguageObject languageType:DLLanguageTypeCn];
[_dataList addObject:lanEn];
[_dataList addObject:lanCn];
}
return _dataList;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.title = DLLocal(@"language_chage_title");
[self settingRightButton];
NSInteger index = 0;
for (DLLanguageObject *lanObj in self.dataList) {
DLLanguageObject *currentLanguage = [InternationalControl currentLanguage];
if ([lanObj.lanCode isEqualToString:currentLanguage.lanCode]) {
currentLanguage.isSelected = YES;
self.selectedLan = currentLanguage;
break;
}
index++;
}
[self.dataList replaceObjectAtIndex:index withObject:self.selectedLan];
[self.tableView reloadData];
}
- (void)settingRightButton{
[self replaceRightBarButtonItemWithTitle:UBTLocalizedString(@"phone_search_sure") image:nil target:self action:@selector(comfirmSettingLanguage)];
}
- (void)comfirmSettingLanguage{
[InternationalControl setUserlanguage:self.selectedLan];
POSTChangeLanguageInfoNotification;
[self.navigationController popViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return self.dataList.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
ALLanguageCell *cell = [tableView dequeueReusableCellWithIdentifier:@"ALLanguageCell"];
cell.lanObj = [self.dataList objectAtIndexWithExamine:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
self.selectedLan.isSelected = NO;
DLLanguageObject *lan = [self.dataList objectAtIndexWithExamine:indexPath.row];
lan.isSelected = YES;
self.selectedLan = lan;
[self.tableView reloadData];
}
@end
