一、创建本地通知事例详解

首先本地推送分为iOS10之前的版本 和 之后的版本
iOS之后的版本 有一些新的功能
首先申请权限不区分本地和远程推送了
利用独立的UserNotifications.framework框架来管理通知；并且增加了撤销单条通知、更新已展示通知、中途修改通知内容等等，以及在通知中展示图片视频，自定义通知UI等一系列新功能；总之，iOS 10的通知功能十分强大。
iOS10之后的授权

// 获取通知授权和设置    
[center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {        
/*         
UNAuthorizationStatusNotDetermined : 没有做出选择         
UNAuthorizationStatusDenied : 用户未授权         
UNAuthorizationStatusAuthorized ：用户已授权         
*/        
if (settings.authorizationStatus == UNAuthorizationStatusNotDetermined) 
{                       
      NSLog(@"未选择");                  
}else if (settings.authorizationStatus == UNAuthorizationStatusDenied){                        
      NSLog(@"未授权");                   
}else if (settings.authorizationStatus == UNAuthorizationStatusAuthorized){                      
      NSLog(@"已授权");        
}       
}];

UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];    
// 请求授权    
/*     
UNAuthorizationOptionBadge   = (1 << 0),     
UNAuthorizationOptionSound   = (1 << 1),     
UNAuthorizationOptionAlert   = (1 << 2),     
UNAuthorizationOptionCarPlay = (1 << 3),     
*/    
[center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound + UNAuthorizationOptionBadge)                          completionHandler:^(BOOL granted, NSError * _Nullable error) {                             
}];

iOS10之前的授权

    // 注册本地通知
    UIUserNotificationSettings *setting = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert | UIUserNotificationTypeSound | UIUserNotificationTypeBadge) categories:nil];
    
    //注册通知
    [[UIApplication sharedApplication] registerUserNotificationSettings:setting];

iOS10之后的本地通知的创建

- (void)creatLocalPushIOS10{
    
    
    //注册
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
//    [center setDelegate:self];  这里如果设置了代理 就不会走之前的appdelegate里面的didReceiveLocalNotification方法了 就走代理的方法  如果不设置还是会默认走之前的didReceiveLocalNotification方法
    [center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert | UNAuthorizationOptionBadge |UNAuthorizationOptionSound ) completionHandler:^(BOOL granted, NSError * _Nullable error) {

        if (granted) {
            NSLog(@"授权成功");
        }else {
            NSLog(@"没有授权");
        }

    }];
    [center getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
        NSLog(@"%@",settings);
    }];
    
    
    // 创建本地通知也需要在appdelegate中心进行注册
    // 1.创建通知内容
    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = @"本地通知标题";
  
    content.subtitle = @"本地通知副标题";
    content.body = @"本地通知内容";
    content.badge = @1;
    NSError *error = nil;
    NSString *path = [[NSBundle mainBundle] pathForResource:@"imageName@2x" ofType:@"png"];
    // 2.设置通知附件内容
    NSMutableDictionary *optionsDict = [NSMutableDictionary dictionary];
    // 一个包含描述文件的类型统一类型标识符（UTI）一个NSString。如果不提供该键，附件的文件扩展名来确定其类型，常用的类型标识符有 kUTTypeImage,kUTTypeJPEG2000,kUTTypeTIFF,kUTTypePICT,kUTTypeGIF ,kUTTypePNG,kUTTypeQuickTimeImage等。
    
    // 需要导入框架 #import<MobileCoreServices/MobileCoreServices.h>
    optionsDict[UNNotificationAttachmentOptionsTypeHintKey] = (__bridge id _Nullable)(kUTTypeImage);
    // 是否隐藏缩略图
//    optionsDict[UNNotificationAttachmentOptionsThumbnailHiddenKey] = @YES;
    // 剪切缩略图
    optionsDict[UNNotificationAttachmentOptionsThumbnailClippingRectKey] = (__bridge id _Nullable)((CGRectCreateDictionaryRepresentation(CGRectMake(0.25, 0.25, 0.5 ,0.5))));
    // 如果附件是影片，则以第几秒作为缩略图
//    optionsDict[UNNotificationAttachmentOptionsThumbnailTimeKey] = @1;
    // optionsDict如果不需要，可以不设置，直接传nil即可
    UNNotificationAttachment *att = [UNNotificationAttachment attachmentWithIdentifier:@"identifier" URL:[NSURL fileURLWithPath:path] options:optionsDict error:&error];
    if (error) {
        NSLog(@"attachment error %@", error);
    }
    content.attachments = @[att];
    content.launchImageName = @"imageName@2x";
    // 2.设置声音
    UNNotificationSound *sound = [UNNotificationSound defaultSound];
    content.sound = sound;
    // 3.触发模式 多久触发，是否重复
    // 3.1 按秒 这里如果设置为YES 那么时间间隔必须大于60秒 否则会崩溃报错
    UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:61  repeats:YES];
    // 3.2 按日期
    //    // 周二早上 9：00 上班
    //    NSDateComponents *components = [[NSDateComponents alloc] init];
    //    // 注意，weekday是从周日开始的计数的
    //    components.weekday = 3;
    //    components.hour = 9;
    //    UNCalendarNotificationTrigger *trigger = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:components repeats:YES];
    // 3.3 按地理位置
    // 一到某个经纬度就通知，判断包含某一点么
    // 不建议使用！！！！！！CLRegion *region = [[CLRegion alloc] init];
    
    //    CLCircularRegion *circlarRegin = [[CLCircularRegion alloc] init];
    //    // 经纬度
    //    CLLocationDegrees latitudeDegrees = 123.00; // 维度
    //    CLLocationDegrees longitudeDegrees = 123.00; // 经度
    //
    //    [circlarRegin containsCoordinate:CLLocationCoordinate2DMake(latitudeDegrees, longitudeDegrees)];
    //    UNLocationNotificationTrigger *trigger = [UNLocationNotificationTrigger triggerWithRegion:circlarRegin repeats:NO];
    
    
    // 4.设置UNNotificationRequest
    NSString *requestIdentifer = @"TestRequest";
    UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:requestIdentifer content:content trigger:trigger];
    
    //5.把通知加到UNUserNotificationCenter, 到指定触发点会被触发
    [[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
        
        NSLog(@"添加成功");
    }];
    
}

//代理方法如下
//Ios 10之后如果设置了代理 就会走这个方法
#pragma mark - UNUserNotificationCenterDelegate
// iOS10 推送回调
- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{
    NSDictionary *userInfo = notification.request.content.userInfo;
    UNNotificationRequest *request = notification.request; // 收到推送的请求
    UNNotificationContent *content = request.content; //收到推送消息的全部内容
    NSNumber *badge = content.badge; // 推送消息的角标
    NSString *body = content.body; // 收到推送消息具体内容
    UNNotificationSound *sound = content.sound; //声音
    NSString *subTitle = content.subtitle; // 推送收到的副标题
    NSString *title = content.title; // 推送收到的标题
    
    if ([notification.request.trigger isKindOfClass:[UNPushNotificationTrigger class]]) {
        NSLog(@"iOS10 收到远程通知");
    }else{
        NSLog(@"ios10 收到本地通知%@%@%@%@%@",title,subTitle,body,badge,userInfo);
    }
    completionHandler(UNNotificationPresentationOptionBadge |
                      UNNotificationPresentationOptionSound |
                      UNNotificationPresentationOptionAlert );
    // 需要执行此方法，选择是否提醒用户，有以上三种那个类型可选
    
}
// 通知的点击事件
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{
    NSDictionary *userInfo = response.notification.request.content.userInfo;
    UNNotificationRequest *request = response.notification.request;
    UNNotificationContent *content = request.content; //收到推送消息的全部内容
    NSNumber *badge = content.badge; // 推送消息的角标
    NSString *body = content.body; // 收到推送消息具体内容
    UNNotificationSound *sound = content.sound; //声音
    NSString *subTitle = content.subtitle; // 推送收到的副标题
    NSString *title = content.title; // 推送收到的标题
    NSLog(@">>>通知的点击事件");
    if ([request.trigger isKindOfClass:[UNPushNotificationTrigger class]]) {
        NSLog(@"iOS10 收到远程通知");
    }else{
        NSLog(@"ios10 收到本地通知%@%@%@%@%@",title,subTitle,body,badge,userInfo);
    }
    completionHandler(); //系统要求执行此方法
    
}

iOS10后的补充
UserNotifications提供了三种触发器：
UNTimeIntervalNotificationTrigger ：一定时间后触发
UNCalendarNotificationTrigger ： 在某月某日某时触发
UNLocationNotificationTrigger ： 在用户进入或是离开某个区域时触发

- 移除还未展示的通知
[center removePendingNotificationRequestsWithIdentifiers: @[@“rjb_notification”
]];
[center removeAllPendingNotificationRequests]; //  - (void)cancelAllLocalNotifications；
- 移除已经展示过的通知
[center removeDeliveredNotificationsWithIdentifiers:@[@“ rjb_notification”
]];
[center removeAllDeliveredNotifications];
- 获取未展示的通知    
[center getPendingNotificationRequestsWithCompletionHandler:^(NSArray<UNNotificationRequest *> * _Nonnull requests) {
   NSLog(@"%@",requests);    
}];    
- 获取展示过的通知    
[center getDeliveredNotificationsWithCompletionHandler:^(NSArray<UNNotification *> * _Nonnull notifications) { 
  NSLog(@"%@",notifications);
}];

demo 地址: https://github.com/rjb0514/LocalNotification

参考：https://www.cnblogs.com/fishbay/p/7206827.html
https://www.jianshu.com/p/3d602a60ca4f