iOS 构建项目的通知中心

以我现在的项目组的通知中心为例

FNAgendaNotification.h

#import <Foundation/Foundation.h>
@class FNAgendaModel;
@class FNAgendaLabelModel;

@interface FNAgendaNotification : NSObject


+ (void)receivedWarnNotification:(NSDictionary *)notifi;

+ (void)notifyAgendaLabelChanged;

//通知传对象
+ (void)addNewAgendaLabelChanged:(FNAgendaLabelModel *)agendaLabelModel;

@end

FNAgendaNotification.m

#define FNNotification(x)           NSString *x = @#x

#import "FNAgendaNotification.h"
#import "FNAgendaModel.h"
#import "FNAgendaLabelModel.h"

FNNotification(kFNNotificationReceivedAgendaSystemNotifi);
FNNotification(kFNNotificationReceivedAgendaWarnNotifi);
FNNotification(kFNNotificationAgendaLabelChanged);

@implementation FNAgendaNotification

+ (void)receivedWarnNotification:(NSDictionary *)notifi {
    [[NSNotificationCenter defaultCenter] postNotificationName:kFNNotificationReceivedAgendaWarnNotifi
                                                        object:nil
                                                      userInfo:notifi];
}

+ (void)notifyAgendaLabelChanged {
    [[NSNotificationCenter defaultCenter] postNotificationName:kFNNotificationAgendaLabelChanged
                                                        object:nil
                                                      userInfo:nil];
}

+ (void)addNewAgendaLabelChanged:(FNAgendaLabelModel *)agendaLabelModel {
    [[NSNotificationCenter defaultCenter] postNotificationName:kFNNotificationAgendaLabelAddNewLabel
                                                        object:agendaLabelModel
                                                      userInfo:nil];
}

@end

这样通知中心就搭建好了

然后就是在需要的地方发送通知了

//第一种通知
[FNAgendaNotification receivedWarnNotification:body];

//第二种通知
[FNAgendaNotification notifyAgendaLabelChanged];

//第三种通知
[FNAgendaNotification addNewAgendaLabelChanged:labelModel];

最后一步,在需要接受通知的地方 实现接受通知后的方法

一般是写一个方法里面放所有需要在这个页面监测的通知

在viewDidLoad中调用 addListenEvents 方法就可以了


#pragma mark - 监听处理
- (void)addListenEvents {
    //第一种通知
    extern NSString *kFNNotificationReceivedAgendaWarnNotifi;
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onFNAgendaWarnSystemNotify:)
                                                 name:kFNNotificationReceivedAgendaWarnNotifi
                                               object:nil];
    //第二种通知,不传值
    extern NSString *kFNNotificationAgendaLabelChanged;
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onAgendaLabelListChanged:)
                                                 name:kFNNotificationAgendaLabelChanged
                                               object:nil];

    //第三种通知,传对象
    extern NSString *kFNNotificationAgendaLabelAddNewLabel;
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(onAddNewAgendaLabel:)
                                                 name:kFNNotificationAgendaLabelAddNewLabel
                                               object:nil];
    
}


- (void)onFNAgendaWarnSystemNotify:(NSNotification *)notification {
    NSDictionary *userInfo = [notification userInfo];
    
}

- (void)onAgendaLabelListChanged:(NSNotification *)notification {
   
}

- (void)onAddNewAgendaLabel:(NSNotification *)notification {
    FNAgendaLabelModel *agendaLabelModel = notification.object;
    
}