检查是否允许本地通知

2 回答

• -2

  在提交通知之前，检查用户设置是否允许：

  - (void)viewDidLoad {
      [super viewDidLoad];
  
      UIUserNotificationType types = UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert;
      UIUserNotificationSettings *mySettings = [UIUserNotificationSettings settingsForTypes:types categories:nil];
      [[UIApplication sharedApplication] registerUserNotificationSettings:mySettings];
  
      // before we create any new ones, cancel all existing notifications
      [[UIApplication sharedApplication]cancelAllLocalNotifications];
  
      if ([[[UIApplication sharedApplication] currentUserNotificationSettings] types] != UIUserNotificationTypeNone) {
  
          UILocalNotification* localNotification = [[UILocalNotification alloc] init];
  
          NSCalendar *cal = [NSCalendar currentCalendar];
          NSDateComponents *comp = [cal components:(NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute) fromDate:[NSDate date]];
          comp.hour = 19; // 19 = 7PM
          comp.minute = 45; // 7:45 PM
          comp.second = 01; // 7:45:01 PM
  
          localNotification.fireDate = [cal dateFromComponents:comp];
          localNotification.alertBody = @"Local Notification in iOS8";
          localNotification.timeZone = [NSTimeZone defaultTimeZone];
          localNotification.repeatInterval = NSCalendarUnitDay;
  
          // this will schedule the notification to fire at the fire date
          [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
          // this will fire the notification right away, it will still also fire at the date we set
          [[UIApplication sharedApplication] presentLocalNotificationNow:localNotification];
  
      }
  }
  

  回复于 2024-05-19T08:23:19+08:00
• 1

  在事件切换时，请尝试以下操作 -

  [[UIApplication sharedApplication] cancelAllLocalNotifications];
  

  回复于 2024-05-19T08:23:19+08:00