Sharing Array between Views

[drnkHobo]

Hi there all,
ive been stuck with this problem for a couple of days now and cant seem to get anywhere.

Basically I want to copy dictionaries between views.
In one view I have a table with some data.Its using a plist, with an array of dictionaries.
In the other view, once again a table but I want to be able to fill this table with a user selection of dictionaries from the first view.

This is how i have set it up:

I have 3 viewControllers:

1stTableViewController--------main table view with all data

2ndTableViewController-------user selected table view

DetailViewController-----------show the details of selected row


So in the detailview I have made a button to "watch" a entry.
What I mean is like in the ebay app, you can select items to put in your watch list.

Inside my button pressed method i have done this:

- (IBAction)watchButtonPressed:(id)sender {UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Watch?"	message:@"You wanna watch?" delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];[alert show];

// Retrieve Selected rows data from 1stVC
    NSString *publisher = [book objectForKey:PUB_KEY];
    NSString *name = [book objectForKey: NAME_KEY];
    NSString *description =	[book objectForKey: INFO_KEY];
		
	NSString *errorDesc;
	
	//Creating a delegate so I can access the mutable dictionary data
	myAppDelegate *delegate = (myAppDelegate *)[[UIApplication sharedApplication] delegate];
	

	
	NSDictionary *plistDict = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects: name, publisher, description, nil] forKeys:[NSArray arrayWithObjects:@"Name", @"Publisher", @"Description", nil]];
	NSData *plistData = [NSPropertyListSerialization dataFromPropertyList:plistDict format:NSPropertyListXMLFormat_v1_0 errorDescription:&errorDesc];
	
	//Adding plistDict to data Dictionary
	[delegate.data addObject:plistData];

now that finds the data corresponding to the selected row.Creates a dict with that data and then adds it to an array in my appDelegate called "data".
well, at least i think it should.

In my 2ndTable VC i have this :

myAppDelegate *delegate = (myAppDelegate *)[[UIApplication sharedApplication] delegate];
	
	myBooks = delegate.data;

myBooks is an array which will feed the table view.

Now when I try run this in the simulator it doesnt pass the data.

Can anyone help me with this?

Is my method of passing data thru the appDelegate right?
Can I do this?

[rickrets]

now that finds the data corresponding to the selected row.Creates a dict with that data and then adds it to an array in my appDelegate called "data".
well, at least i think it should.

If you wanna check stuff like that, use this:

NSLog(@"Data: %@", data);

This way you can see what is and what is not being 'transferred'.

[drnkHobo]

Originally Posted by rickrets

now that finds the data corresponding to the selected row.Creates a dict with that data and then adds it to an array in my appDelegate called "data".
well, at least i think it should.

If you wanna check stuff like that, use this:

NSLog(@"Data: %@", data);

This way you can see what is and what is not being 'transferred'.

Thanks rickrets, ive put that code into my appDelegate but to no avail!
i get no logs or anything?

[rickrets]

Put it where you want to achieve the information.
You did check it in the Console (run -> console), right?

[drnkHobo]

Originally Posted by rickrets

Put it where you want to achieve the information.
You did check it in the Console (run -> console), right?

yep, i put it in my aplicationDidFinishLaunching.
and nothing in the console...?


****wait wait, got it!!!

heh heh heh, but Data:null.

its not writing the dictionary

[rickrets]

You need to put it in one of the view controllers you created.

i.e. in 2ndTable.

Try something like:

NSLog(@"Data: %@", delegate.data)

If you see in the console:

Data:

Then it is indeed empty, then try to log it in a way untill you get something

[drnkHobo]

Right so ive checked with NSLog and it creates the dictionary fine except when i use log on delegate.data it shows null.
Which means either im not adding the object correctly or my method of using the appDelegate is incorrect. . . .

[rickrets]

You are doing this:

[delegate.data addObjectlistData];

Check after that with a log if the plisData is in there, if it is, it narrows the problem down to "using the appDelegate is incorrect. . . . "

But I never used appDelegate, so I can't help you with that!

[drnkHobo]

Originally Posted by rickrets

You are doing this:

[delegate.data addObjectlistData];

Check after that with a log if the plisData is in there, if it is, it narrows the problem down to "using the appDelegate is incorrect. . . . "

But I never used appDelegate, so I can't help you with that!

Thanks, I am logging after and still null....

need to do more searching on appDelegate methods

[drnkHobo]

Ok, so ive got it working, partially....

Ive created an array in 2ndViewController and added the object from delegate.data like this:

 [tempArray addObject:delegate.data];

so now i goto 1stVC, select a book. Inside detail view push watch button,go back to 2ndVC which is "MybooksTable View" and there is the book i selected to watch! however, if i go back and try to "add" more books to watch it still only displays the first book I selected to watch. . .

i have got

[self.tableView reloadData];

still only the first book???

Anyone out there with some help for me?