修改目录结构

Class/NSBundle+AppLanguageSwitch.h

@@ -0,0 +1,37 @@
+//
+//  NSBundle+AppLanguageSwitch.h
+//  https://github.com/zengqingf/iOSAppLanguageSwitch
+//
+//  Created by zengqingfu on 2017/6/13.
+//  Copyright © 2017年 zengqingfu. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+//语言改变通知
+FOUNDATION_EXPORT NSString * const ZZAppLanguageDidChangeNotification;
+
+
+@interface NSBundle (AppLanguageSwitch)
+
+/**
+ 设置语言
+
+ @param language 参数为语言包的前缀，比如Base.lproj 传入Base、
+ 中文语言包zh-Hans.lproj传入zh-Hans，前提是工程中已经提前加入了语言包
+ */
++ (void)setCusLanguage:(NSString *)language;
+
+
+/**
+ 获取当前的自定义语言，如果使用的是跟随系统语言出参为nil
+
+ @return 语言类型
+ */
++ (NSString *)getCusLanguage;
+
+
+/**
+ 恢复成跟随系统语言
+ */
++ (void)restoreSysLanguage;
+@end

Class/NSBundle+AppLanguageSwitch.m

@@ -0,0 +1,70 @@
+//
+//  NSBundle+AppLanguageSwitch.m
+//  https://github.com/zengqingf/iOSAppLanguageSwitch
+//
+//  Created by zengqingfu on 2017/6/13.
+//  Copyright © 2017年 zengqingfu. All rights reserved.
+//
+
+#import "NSBundle+AppLanguageSwitch.h"
+#import <objc/runtime.h>
+
+
+NSString * const ZZAppLanguageDidChangeNotification = @"cc.devfu.languagedidchange";
+
+static const char kBundleKey = 0;
+@interface ZZBundleEx : NSBundle
+@end
+
+@implementation ZZBundleEx
+
+- (NSString *)localizedStringForKey:(NSString *)key value:(NSString *)value table:(NSString *)tableName {
+    NSBundle *bundle = objc_getAssociatedObject(self, &kBundleKey);
+    if (bundle) {
+        return [bundle localizedStringForKey:key value:value table:tableName];
+    } else {
+        return [super localizedStringForKey:key value:value table:tableName];
+    }
+}
+@end
+
+
+static NSString *AppLanguageSwitchKey = @"App_Language_Switch_Key";
+@implementation NSBundle (AppLanguageSwitch)
++ (void)setCusLanguage:(NSString *)language {
+    id value = nil;
+    NSUserDefaults *df = [NSUserDefaults standardUserDefaults];
+    if (language) {
+        value = [NSBundle bundleWithPath:[[NSBundle mainBundle] pathForResource:language ofType:@"lproj"]];
+        NSAssert(value != nil, @"value不能为空,请检查参数是否正确");
+        [df setObject:language forKey:AppLanguageSwitchKey];
+        [df synchronize];
+    } else {
+        [df removeObjectForKey:AppLanguageSwitchKey];
+        [df synchronize];
+    }
+    objc_setAssociatedObject([NSBundle mainBundle], &kBundleKey, value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+    [[NSNotificationCenter defaultCenter] postNotificationName:ZZAppLanguageDidChangeNotification object:nil];
+}
+
++ (NSString *)getCusLanguage {
+    NSUserDefaults *df = [NSUserDefaults standardUserDefaults];
+    NSString *language = [df objectForKey:AppLanguageSwitchKey];
+    return language;
+}
+
++ (void)restoreSysLanguage {
+    [self setCusLanguage:nil];
+}
+
++ (void)load {
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        object_setClass([NSBundle mainBundle],[ZZBundleEx class]);
+        NSString *language = [self getCusLanguage];
+        if (language) {
+            [self setCusLanguage:language];
+        }
+    });
+}
+@end