selectRowAtIndex and Change Row on Button

[jNoxx]

Oh hai there!

I have 2 questions here
after changing from iPhone to iPad I have been running into a HUGE amount of fails, definitly because of the UISplitViewController..
ok, so what my problem here is.
I have a UISPlitViewController app.
Which has a rootview (tableview) on the left, and a details view on the right (quite obvious), it loads the Detailview on the right, according to the XMLparsers, etc etc.
But on Portrait mode, u can only tap to the next item, by pushing the button on top left first, then see the tableview, and then tap to the next. I think this gets boring for users, when they want to use it in portrait mode, or even, when their in Landscape mode, so what I tried to implement is, create a Bar at the bottom.
Add a IBAction to a buttonItem there (2x buttons to be exact), and add the code. to switch to the next row at Indexpath when pressed Next, or go 1 back when u pressed the Previous..
But, damn, I cant find't anything about it, im sure someone else did it. But, I think im just looking for the wrong things on google, so I hope someone could push me in the right direction here.

Second question is.
When I boot up my app, and let's say its in portrait mode.
the detail is empty. because nothing is selected yet.
So what I tried to do is,

	
NSIndexPath *ip = [NSIndexPath indexPathForRow: 0 inSection:0];
[rootViewController.tableView scrollToRowAtIndexPath:ip atScrollPosition:UITableViewScrollPositionTop animated:YES];

And I also tried to do, is selectRowAtInde, and then use 0.
But it just highlighted it in the UITable, but didn't really select it, (which triggers a loadDetails function..)

So, damn, im stuck, and I hope someone can push me in the right direction, or more people who want to accomplish the same, could put their frustrations here!

Greetings, jNoxx

PS: Thanks for any feedback..

[jNoxx]

No one has ever encountered this? weird..

[Bertrand21]

Originally Posted by jNoxx

No one has ever encountered this? weird..

Just make a separate method called

-(void)selectNewIndex:(nsinteger)index{
//make the tableview select new row
//paste the code from your didSelectRow method here
}

Call this method from your two actions and when the app first starts

[jNoxx]

Hmm..
That //Make the tableview select new row.
Is kinda what im looking for.. x)
think im just not taking the right approach to this, and it might be super easy.. but yea :/
So, i can paste whatever code u want, to (maybe, if u really want to *puppy eyes*) help me?

Greetings

[Bertrand21]

Originally Posted by jNoxx

Hmm..
That //Make the tableview select new row.
Is kinda what im looking for.. x)
think im just not taking the right approach to this, and it might be super easy.. but yea :/
So, i can paste whatever code u want, to (maybe, if u really want to *puppy eyes*) help me?

Greetings

Id be Glad to help. Post your did selectRow here.


By the way the method you want to call is

- (void)selectRowAtIndexPath:(NSIndexPath *)indexPath animated:(BOOL)animated scrollPosition:(UITableViewScrollPosition)scrollPosition

but calling this will not call did select row which is the reason I said to paste your didSelectRow code below it. This will cause it to do the same action in theory

[jNoxx]

edited cuz of NDA

[jNoxx]

Originally Posted by gran smith

Maybe with the sony program, you might be able to change it. Check there, if not, you will need a third party shortcut program.

"Sony program", what's that? I only use xcode
But if u can convince me to use whatever ur talking about, i might check it out ^_-
Thanks!

[Bertrand21]

Originally Posted by jNoxx

"Sony program", what's that? I only use xcode
But if u can convince me to use whatever ur talking about, i might check it out ^_-
Thanks!

THat was a spam bot. Don't listen to him. Im looking at your code right now. Hang tight...

[jNoxx]

Originally Posted by Bertrand21

THat was a spam bot. Don't listen to him. Im looking at your code right now. Hang tight...

Ah.. interesting
Thanks for that, and If u need anything, im refreshing this page like every 20 seconds, or u can just pm me ^_-
Thanks.

[Bertrand21]

Okay..

First declare in your .h

NSInteger currentPromotionIndex;

Here is the code for your next previous as well as a new DidSelectRow using the method i spoke about before. I also fixed some memory leaks you had there.

in your viewDidLoad (or whenever you have all of your promotions loaded)..Call:

currentPromotionIndex = 0;
[self loadNewPromotionItemForIndex:currentPromotionIndex];

- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
	[self loadNewPromotionItemForIndex:indexPath.row];
	currentPromotionIndex = indexPath.row;
}

-(void)loadNewPromotionItemForIndex:(NSInteger)index{
	Punta_vista_startVersie16_11AppDelegate* appDelegate = (Punta_vista_startVersie16_11AppDelegate *)[[UIApplication sharedApplication] delegate];
	Promotion* promotion  = [appDelegate.promotions objectAtIndex:indexPath.row];
	NSData* imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:[promotion picture_small_nl]]];
	[detailViewController promotionView].image = [[[UIImage alloc] initWithData:imageData] autorelease];
	[imageData release];
	[appDelegate loadPromotionDetails:[promotion promotionId]];
	NSInteger promotionId = [promotion promotionId];
	
	PromotionDetail *promotionDetails = [appDelegate findPromotionDetail: promotionId];
	
	if (promotionDetails) {
		[detailViewController text_nlLabel].text = [promotionDetails text_nl];
		[detailViewController dateToLabel].text = [promotionDetails validto];
		[detailViewController dateFromLabel].text = [promotionDetails validfrom];
		[detailViewController detailDescriptionLabel].text = [promotionDetails header_nl];
		[detailViewController prijsLabel].text = [promotionDetails price];
		[detailViewController rp_nameLabel].text = [promotionDetails rp_name];
		[detailViewController navigationBar].topItem.title = [promotionDetails header_nl];
	}
}


#pragma mark Next and Previous Button Actions

-(IBAction)nextPromotion{
	Punta_vista_startVersie16_11AppDelegate* appDelegate = (Punta_vista_startVersie16_11AppDelegate *)[[UIApplication sharedApplication] delegate];
	if(currentPromotionIndex == appDelegate.promotions.count - 1){
		return;
	}
	currentPromotionIndex = currentPromotionIndex +1;
	[self loadNewPromotionItemForIndex:currentPromotionIndex];
	NSIndexPath *ip = [NSIndexPath indexPathForRow:currentPromotionIndex inSection:0];
	[yourTableviewName selectRowAtIndexPath:ip animated:NO scrollPosition:UITableViewScrollPositionNone];
}

-(IBAction)previousPromotion{
	Punta_vista_startVersie16_11AppDelegate* appDelegate = (Punta_vista_startVersie16_11AppDelegate *)[[UIApplication sharedApplication] delegate];
	if(currentPromotionIndex == 0){
		return;
	}
	currentPromotionIndex = currentPromotionIndex -1;
	[self loadNewPromotionItemForIndex:currentPromotionIndex];
	NSIndexPath *ip = [NSIndexPath indexPathForRow:currentPromotionIndex inSection:0];
	[yourTableviewName selectRowAtIndexPath:ip animated:NO scrollPosition:UITableViewScrollPositionNone];
}

[jNoxx]

Wow, that's a big change, so i'm checking all the code.
Because im not that super yet in objective C, im more of the, we'll see and learn type.
Because where my promotions gets loaded, is in my appDelegate.
in my ApplicationDidFinishLaunching, there I make a cal to loadURLTable.
Where it connects to the DB, and does all the authorization stuff etc.

So I added in the .h file, the currentPromotionIndex, and in the M file I added these

	currentPromotionIndex = 0;
	[self loadNewPromotionItemForIndex:currentPromotionIndex];

before

[window makeKeyAndVisible];

But my didSelectRowAtIndexPath is ofcourse in my rootViewController (since its an ipad app).
So I added the 2 methods there you gave me.

but the 2 IBActions, those buttons are in my DetailViewController normally, because I have to hook up the actions on the buttons in my IB.
Or, am I missing something?
Can I just put the next/previous into the detailviewcontroller, or also in the rootcontroller?

Btw, can't thank u enough by the way..
I should put a dedication to you ^_-

[Bertrand21]

I see...
Well I would make use of the NSNotificationCenter and post a notification when you press next and prev buttons to tell your rootview controller to change the selection. And would post a notification when the promotions are loaded.

There are many different ways you can do this. You can even have that method be in your app delegate and call if from the rootview and the detailview.

I'm tired. I need my sleep. I will check back in the morning

[jNoxx]

Damn, im not getting it to work at all.
Sleep tight man, already appreciate ur efforts!
Hope we can talk about it tomorrow
Ill try to do some other stuff first then.

Greetings, noxx