Trouble segue-ing to a uiviewcontroller from appDelegate upon UILocalNotification - with SWRevealViewController in the mix

问题

I'm using iBeacons and am trying to respond to the UILocalNotifications they trigger. Everything works fine there and I'm able to display my message content in the notification.

I want to be able to launch a specific UIViewController when the user swipes the notification. Currently, according to NSLog output, I'm very close.

The tricky bit is that I'm using SWRevealViewController for its cool slider-window menu features and so the segue is crapping out and saying,

*** Assertion failure in -[MainHomePageVC prepareForSegue:sender:], /nmaster/nmaster/MainHomePageVC.m:312
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'oops! must have a revealViewController'

I'm responding to the localnotification triggers inside my appDelegate.m and so am trying to segue from there, first to the UIViewController that has the storyboard segue to the UIViewController I want to goto. So I've got one level of indirection going on here which seems to be complicating things further. Within the appDelegate, I get a pointer to the main UIViewController and then I try and initiate a segue from that object to the UIViewController I'm interested in showing.

Here is the code in my appDelegate.m

// this routine is called when an ibeacon range entry/exit is detected

-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {NSLog(@"yeehaw - you found an iBeacon!");

UIApplicationState state = [application applicationState];
if (state == UIApplicationStateInactive) {

    //push view manually
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    MainHomePageVC *ivc = [storyboard instantiateViewControllerWithIdentifier:@"mainmenu"];
    [ivc.revealButtonItem setTarget: ivc.revealViewController];
    [ivc.revealButtonItem setAction: @selector( revealToggle: )];
    [ivc.navigationController.navigationBar addGestureRecognizer: ivc.revealViewController.panGestureRecognizer];
    [ivc.navigationItem setHidesBackButton:YES];
    ivc.navigationItem.leftBarButtonItems = [NSArray arrayWithObjects:ivc.revealButtonItem, nil];
    [ivc performSegueWithIdentifier:@"foodmenu" sender:ivc];
}

And here is the standard SWRevealViewController code in the main UIViewcontroller that I have instantiated in the code above.

- (void) prepareForSegue: (UIStoryboardSegue *) segue sender: (id) sender
{
    // configure the segue.
    if ( [segue isKindOfClass: [SWRevealViewControllerSegue class]] )
    {
        SWRevealViewControllerSegue* rvcs = (SWRevealViewControllerSegue*) segue;

    SWRevealViewController* rvc = self.revealViewController;
    NSAssert( rvc != nil, @"oops! must have a revealViewController" );

    NSAssert( [rvc.frontViewController isKindOfClass: [UINavigationController class]], @"oops!  for this segue we want a permanent navigation controller in the front!" );

    rvcs.performBlock = ^(SWRevealViewControllerSegue* rvc_segue, UIViewController* svc, UIViewController* dvc)
    {
        NSLog(@"ok, time ___ todo my thing ___");
        UINavigationController* nc = [[UINavigationController alloc] initWithRootViewController:dvc];
        [rvc setFrontViewController:nc animated:YES];


       };
    }
}

Notice that the "oops!" error message from the assertion above is the one I'm getting.

Can anyone tell me why I am failing this assertion?

来源：https://stackoverflow.com/questions/21884926/trouble-segue-ing-to-a-uiviewcontroller-from-appdelegate-upon-uilocalnotificatio

标签

ios7

uilocalnotification

uistoryboardsegue

ibeacon