ios发送本地通知

UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center requestAuthorizationWithOptions:UNAuthorizationOptionSound completionHandler:^(BOOL granted, NSError * _Nullable error) {
    if(granted) {
            UNMutableNotificationContent* content = [[UNMutableNotificationContent alloc] init];
    UNNotificationSound* sound = [UNNotificationSound soundNamed:self.voiceArray[0]];
    content.sound = sound;
    UNTimeIntervalNotificationTrigger* tirgger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:0.1
               repeats:NO];
    UNNotificationRequest* rt = [UNNotificationRequest requestWithIdentifier:@"notificationKey" content:content trigger:tirgger];

    [[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:rt
               withCompletionHandler:^(NSError* _Nullable error) {
        NSLog(@"%@本地推送 :(%@", @"notificationKey", error);
        if (self.voiceArray.count > 0) {
            [self.voiceArray removeObjectAtIndex:0];
            [self setLocalNotification];
        }
        else {
            self.contentHandler(self.bestAttemptContent);
        }
    }            
    }];
}];