本地推送闹钟功能实现

本地推送闹钟功能实现

在ios10下使用UserNotifications用本地推送实现闹钟功能，只是实现了简单的定时推送功能。

只适用于ios10以上系统，ios10以后apple对推送重新进行了封装，     
更加统一。   

Step 1

在AppDelegate.h里注册推送：

- (void)registerUserNotification
{
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    center.delegate = self;
    [center requestAuthorizationWithOptions:UNAuthorizationOptionSound |
     UNAuthorizationOptionAlert | UNAuthorizationOptionBadge completionHandler:^(BOOL granted, NSError * _Nullable error) {
         if (error) {
             NSLog(@"%@",error);
         }
    }];
}

ios10以上对于收到推送的处理与之前有很大区别，ios10以上需要实现UNUserNotificationCenterDelegate两个方法

app在前台收到推送

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions))completionHandler
{
    completionHandler(UNNotificationPresentationOptionSound | UNNotificationPresentationOptionAlert);
}

处理用户点击推送

分为两种情况

• 点击推送打开app
• 点击推送的操作（下图的点赞操作）

second

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)())completionHandler
{    
    NSString *categoryIdentify = response.notification.request.content.categoryIdentifier;
    if ([categoryIdentify isEqualToString:@"closeCategory"]) {
        
        if ([response.actionIdentifier isEqualToString:@"closeAlarmIdentify"]) {
        //操作Identify
            self.window.rootViewController = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"ViewController"];
        }
    }
    completionHandler();
}

Step 2

在需要的地方添加推送
配置需要推送的content，UNMutableNotificationContent有很多属性，title，subtitle，sound，userInfo ...

    UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
    content.title = @"打卡";
    content.body = @"马上去打卡";
    content.badge = @1;
    content.sound = [UNNotificationSound soundNamed:@"4084.wav"];
    content.categoryIdentifier = @"closeCategory";

如果需要执行操作可以进行如下配置

UNNotificationAction *closeAction = [UNNotificationAction actionWithIdentifier:@"closeAlarmIdentify" title:@"关闭" options:UNNotificationActionOptionForeground];
    
UNNotificationCategory *category = [UNNotificationCategory categoryWithIdentifier:@"closeCategory" actions:@[closeAction] intentIdentifiers:@[] options:UNNotificationCategoryOptionNone];
    
[center setNotificationCategories:[NSSet setWithArray:@[category]]];

Step 3

设置提醒时间，有三种方式可以进行设置

• UNTimeIntervalNotificationTrigger多长时间之后发送推送
• UNCalendarNotificationTrigger根据日历推送
• UNLocationNotificationTrigger根据位置推送

代码分别如下:

UNTimeIntervalNotificationTrigger *trigger1 = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:10 repeats:NO];//timeInterval单位为秒

    //每周一下午 6：00 打卡
    NSDateComponents *components = [[NSDateComponents alloc] init];
    components.weekday = 2;
    components.hour = 18;
    UNCalendarNotificationTrigger *trigger2 = [UNCalendarNotificationTrigger triggerWithDateMatchingComponents:components repeats:YES];

NSDateComponents 的weekday属性对应转换关系如下

- (NSString *)getWeekDayWithIntegerDay:(NSInteger)weekday andSunDayType:(NSInteger)type
{
    NSString* weekString;
    switch (weekday) {
        case 1:
            weekString = type?@"7":@"日";
            break;
        case 2:
            weekString = type?@"1":@"一";
            break;
        case 3:
            weekString = type?@"2":@"二";
            break;
        case 4:
            weekString = type?@"3":@"三";
            break;
        case 5:
            weekString = type?@"4":@"四";
            break;
        case 6:
            weekString = type?@"5":@"五";
            break;
        case 7:
            weekString = type?@"6":@"六";
            break;
    }

    return weekString
 } 

Step 4

    [center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
        if (error) {
            NSLog(@"%@",error);
        }else
        {
            UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"添加成功" message:nil preferredStyle:UIAlertControllerStyleAlert];
            
            [alertVC addAction:[UIAlertAction actionWithTitle:@"好的" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
            }]];
            
            [self presentViewController:alertVC animated:YES completion:nil];
        }
    }];

结语

由于ios系统限制，推送声音最多提示30秒。本来想要程序一直在后台运行，等收到本地推送的时候执行自己的代码，但是一直没有成功，有想法的可以在评论里讨论。