add code and spec file

.gitignore

@@ -0,0 +1 @@
+.DS_Store

MultiDelegateOC.podspec

@@ -0,0 +1,23 @@
+#
+#  Be sure to run `pod spec lint MultiDelegateOC.podspec' to ensure this is a
+#  valid spec and to remove all comments including this before submitting the spec.
+#
+#  To learn more about Podspec attributes see http://docs.cocoapods.org/specification.html
+#  To see working Podspecs in the CocoaPods repo see https://github.com/CocoaPods/Specs/
+#
+
+Pod::Spec.new do |s|
+  s.name         = "MultiDelegateOC"
+  s.version      = "0.0.1"
+  s.summary      = "It can provide a multi delegate model for iOS and OSX."
+  s.homepage     = "https://github.com/FlameGrace/MultiDelegateOC"
+  s.license      = "BSD"
+  s.author             = { "FlameGrace" => "flamegrace@hotmail.com" }
+  s.ios.deployment_target = '7.0'
+  s.osx.deployment_target = '10.9'
+  s.watchos.deployment_target = '2.0'
+  s.tvos.deployment_target = '9.0'
+  s.source       = { :git => "https://github.com/FlameGrace/MultiDelegateOC.git", :tag => "0.0.1" }
+  s.source_files  = "MultiDelegateOC", "MultiDelegateOC/**/*.{h,m}"
+  s.public_header_files = "MultiDelegateOC/**/*.h"
+end

MultiDelegateOC/MDWeakObject.h

@@ -0,0 +1,15 @@
+//
+//  MDWeakObject.h
+//  Combin
+//
+//  Created by Flame Grace on 2017/6/26.
+//  Copyright © 2017年 flamegrace. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface MDWeakObject : NSObject
+
+@property (weak, nonatomic) id object;
+
+@end

MultiDelegateOC/MDWeakObject.m

@@ -0,0 +1,13 @@
+//
+//  MDWeakObject.m
+//  Combin
+//
+//  Created by Flame Grace on 2017/6/26.
+//  Copyright © 2017年 flamegrace. All rights reserved.
+//
+
+#import "MDWeakObject.h"
+
+@implementation MDWeakObject
+
+@end

MultiDelegateOC/NSObject+MultiDelegate.h

@@ -0,0 +1,28 @@
+//
+//  NSObject+MultiDelegate.h
+//  MultiDelegate
+//
+//  Created by Flame Grace on 16/11/17.
+//  Copyright © 2016年 flamegrace@hotmail.com. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+//获取单个代理对象对其进行操作
+typedef void(^MultiDelegateOperateBlack)(id delegate);
+
+
+/*
+ 此类扩展能实现多代理
+ 需要委托代理执行方法时，调用operateDelegates:方法可在相应block块中获取到单个代理，对其进行操作
+*/
+@interface NSObject (MultiDelegate)
+
+//添加一个代理
+- (void)addMultiDelegate:(id)delegate;
+//移除一个代理
+- (void)removeMultiDelegate:(id)delegate;
+//操作代理
+- (void)operateMultiDelegates:(MultiDelegateOperateBlack)operate;
+
+@end

MultiDelegateOC/NSObject+MultiDelegate.m

@@ -0,0 +1,88 @@
+//
+//  NSObject+MultiDelegate.m
+//  MultiDelegate
+//
+//  Created by Flame Grace on 16/11/17.
+//  Copyright © 2016年 flamegrace@hotmail.com. All rights reserved.
+//
+
+#import "NSObject+MultiDelegate.h"
+#import "MDWeakObject.h"
+#import <objc/runtime.h>
+
+
+@implementation NSObject (MultiDelegate)
+
+//使用动态运行时添加数组对象multiDelegates，保存代理
+- (void)setMultiDelegates:(NSMutableArray<MDWeakObject *> *)multiDelegates
+{
+    objc_setAssociatedObject(self, @selector(multiDelegates), multiDelegates, OBJC_ASSOCIATION_RETAIN);
+}
+
+- (NSMutableArray<MDWeakObject *> *)multiDelegates
+{
+    NSMutableArray *multiDelegates = objc_getAssociatedObject(self,@selector(multiDelegates));
+    if(multiDelegates == nil)
+    {
+        multiDelegates = [[NSMutableArray alloc]init];
+        objc_setAssociatedObject(self, @selector(multiDelegates), multiDelegates, OBJC_ASSOCIATION_RETAIN);
+    }
+    return multiDelegates;
+}
+
+- (void)addMultiDelegate:(id)delegate
+{
+    if(delegate == nil)return;
+
+    __block BOOL exist = NO;
+
+    __weak typeof(self) weakSelf = self;
+
+    [self.multiDelegates enumerateObjectsUsingBlock:^(MDWeakObject * _Nonnull delegate, NSUInteger idx, BOOL * _Nonnull stop) {
+        if(delegate.object)
+        {
+            if([delegate.object isEqual:delegate])
+            {
+                exist = YES;
+            }
+        }
+        else
+        {
+            [weakSelf.multiDelegates removeObject:delegate];
+        }
+    }];
+
+    if(!exist)
+    {
+        MDWeakObject *newDelegate = [[MDWeakObject alloc]init];
+        newDelegate.object =delegate;
+        [self.multiDelegates addObject:newDelegate];
+    }
+
+}
+
+- (void)removeMultiDelegate:(id)delegate
+{
+    if(delegate == nil)return;
+
+    __weak typeof(self) weakSelf = self;
+
+    [self.multiDelegates enumerateObjectsUsingBlock:^(MDWeakObject * _Nonnull delegate, NSUInteger idx, BOOL * _Nonnull stop) {
+        if([delegate.object isEqual:delegate])
+        {
+            [weakSelf.multiDelegates removeObject:delegate];
+        }
+    }];
+
+}
+
+- (void)operateMultiDelegates:(MultiDelegateOperateBlack)operate
+{
+     [self.multiDelegates enumerateObjectsUsingBlock:^(MDWeakObject * _Nonnull delegate, NSUInteger idx, BOOL * _Nonnull stop) {
+         operate(delegate.object);
+     }];
+}
+
+
+
+@end