How to come back from view controller to tabbed view controller

Question

I have an issue the dismissing view controller to the tabbed view controller. I will explain my flow.

1. view controller to tabbed view controller(push)

2. I have 5 tabs in the tabbed view controller in the 3 tabbed i have an camera view from their i am presenting the view controller and passing some parameters by using this code

      UIStoryboard *storybord=[UIStoryboard storyboardWithName:@"Main" bundle:nil];
   
   shareViewController   *shareview=[storybord instantiateViewControllerWithIdentifier:@"share"];
   [self presentViewController:shareview animated:YES completion:nil];
   //shareview.finalvideourl=videoURL;
   shareview.videooutputstring=videoPath;
   

3. from the share view controller I want send the data back to the 1st tab for this I am using the below code

   UIStoryboard *story=[UIStoryboard storyboardWithName:@"Main" bundle:nil];
   TabedfirstViewController *Tabedfirst=[story instantiateViewControllerWithIdentifier:@"id"];
   
   UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:Tabedfirst];
   
   [self presentViewController: nc animated:YES completion:^{
       [[NSNotificationCenter defaultCenter] postNotificationName:@"ShareArray" object:_selectedimgarray];
       [[NSNotificationCenter defaultCenter] postNotificationName:@"SharetitleArray" object:_newtile];
       [[NSNotificationCenter defaultCenter] postNotificationName:@"sharevideooutputstring" object:_videooutputstring];
   }];
   

When I do this very thing working good I am sending the data from share view to the tabbed view and I am printing it.

The problem is when I send the second time data from share viewcontroller to the tabbed view controller first data is deleting and the second passed data is replacing the first i.e. I have the 15 objects in an array, from share view controller I am passing array to the tabbed view controller now the array count is 16 and I am printing it, now again I am passing one more object from the share view to tabbed view the array count must increase to 17 but it 16 only.

Answer 1

I'm not sure why you are creating new storyboards using your main storyboard. All you have to do is presentViewController from one the viewcontroller you want to return from with the id of a segue from that viewcontroller back to the root of your tabbed view controller. In your storyboard, ctrl+drag from a button (or whatever is triggering the segue) and drag it to the root of the tab view controller. Select the segue and in the attributes editor give it an id. then in the viewcontroller call presentViewcontroller with the id and it should work fine.

Answer 2

In the App delegate add/make properties of your arrays like

 @property (nonatomic, retain) NSMutableArray *array1;

In AppDelegate.m initiate all your properties

After that in the controller where you are storing the values add instance of AppDelegate as

In

- (void)viewDidLoad
 {
  [super viewDidLoad];
   objAppDelegate = (AppDelegate*)[[UIApplication sharedApplication]delegate];
  objAppDelegate.array1= _imagearray=[@[@"bootimages",@"fall-photography-in-hocking-hills", @"gift",@"hillimages",@"Mercedes-classe-S-W116_large_dettaglio_articolo",@"prini‌​mages",@"resplendent",@"tnb4",@"Tomato-plant",@"Vole",@"waterimages",@"fall-photo‌​graphy-in-hocking-hills", @"gift",@"hillimages",@"Mercedes-classe-S-W116_large_dettaglio_articolo"]mutable‌​Copy];

then

[objAppDelegate.array1 insertObject:[userInfo firstObject] atIndex:0];

The values are maintained and can be used anywhere in the whole project. If your number of objects keeps on increasing then you NSMutableDictionary and add as much key/value pairs as you like.

Answer 3

In the shareViewcontroller.h write the add the following method

@protocol childDelegate <NSObject>
 -(void) sendImage:(UIImage *)img
@end

and the property

@property (assign) id <childDelegate> cDelegate;

once you have done that on the controller where you have the method

-(void) receivedArray:(NSNotification*)notification

add the method

-(void) sendImage:(UIImage *)img
{
 // Add image to app.array1 here.
}

In the share view controller where you are sending the image to the last controller call this method

[self.cDelegate sendImage:"your image comes here"];

Still if you face as issue, then refer to How do I set up a simple delegate to communicate between two view controllers?

Let me know if you still face an issue.