I have an app on the store that uses a RootViewController linking to a UIViewController (DetailController) and I am working on a new app which basically requires the need for this same feature. But instead, my new app has a UITableView inside a UIViewController linked to a UIViewController. So I thought, i'd copy and paste my RootViewController code into this new UIViewController. So i've linked up the TableView, set delegate and datasource to self and the TableView shows the titles of the items (Hurrah) but when touched, doesn't go to the DetailController? I've used NSLog to determine what part isn't working and of course its the didSelectRowAtIndexPath method… and here is my code
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSDictionary *theItem = [items objectAtIndex:indexPath.row];
DetailController *nextController = [[DetailController alloc] initWithItem:theItem];
[self.navigationController pushViewController:nextController animated:YES];
[nextController release];
}
The TableViewCell just highlights blue and doesn't link to DetailController.
Thanks in advance!
By "not working" do mean it's not being called, or that it's not pushing the view controller? If the first, then make sure the table view delegate is set correctly. If the second, make sure both nextController and self.navigationController are not nil.
Related
I am learning iOS and I have written a simple iPhone app using iOS 5. The app shows a UITableView populated with Speakers' names, when I select one of the names its supposed to go to a UIViewController and show details about that person (name, address, etc), so its really two ViewControllers a UITableViewController and UIViewController (both subclassed).
So, in MICSpeakersTableViewController : UITableViewController I have this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
MICSpeakerDetailViewController *detailViewController = [[MICSpeakerDetailViewController alloc] initWithNibName:#"Detail" bundle:nil];
[detailViewController setSpeaker:[[self getSpeakers] objectAtIndex:indexPath.row]];
[self.navigationController pushViewController:detailViewController animated:YES];
}
which gets called when I select it and populates the speaker (in that its not nil and description matches).
Then I have this in the same implementation:
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
NSIndexPath *indexPath = [ self.tableView indexPathForCell:sender];
if ([segue.identifier isEqualToString:#"Detail"])
[segue.destinationViewController setSpeaker:[[self getSpeakers] objectAtIndex:indexPath.row]];
}
Which also gets called and the segue.identifier is Detail and the destinationViewController's speaker is set correctly (is not nil, description matches). I am not quite sure why I have to set that again since I am setting it in didSelectRowAtIndexPath but I set it again and it seems harmless.
Finally, in the MICSpeakerDetailViewController, the initWithNibName method is called and the self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; returns an instance.
However, the segue never happens and viewDidLoad is never called.
Its probably something small but I can't figure it out... any advice?
Edit: Here is a screenshot of the storyboard showing the segue and the controllers:
You have to embed the view controllers in a navigation controller for push segues to work. I don't know why it lets you define them without this in place.
To do this, click on your table view controller, then choose Editor --> Embed In --> Navigation Controller. If you should also be within a tab bar controller, then the navigation controller is embedded in that in a similar fashion. You should see the following:
Your segue will now work.
In viewDidLoad I add a tableview to navigationController like this :
[self.view addSubview:navigationController.view];
[self.navigationController.view addSubview:tableViewRecherchePartenaire];
When a row from tableview is selected I want this tableview to disappear and I tried something like this :
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.row==0){
NSLog(#"RecherchePartenaireTypePartenaireViewController...");
[self.navigationController.view removeFromSuperview];
recherchePartenaireTypePartenaireViewController=[[RecherchePartenaireTypePartenaireViewController alloc] init];
recherchePartenaireTypePartenaireViewController.recherchePartenaireViewController=self.view;
[self.navigationController pushViewController:recherchePartenaireTypePartenaireViewController animated:YES];
[recherchePartenaireTypePartenaireViewController release];
}
}
but the tableview disappear but the next view is not appear. How can I use the table view with the navigationController ? Please help...I spent a lot of time with this and I can see the mistake..Thanks in advance..
First of all, you must not add subview to UINavigationController's view. Put your UITableView in a subclass of UIViewController and make it the rootViewController of your navigationController. You can do it in your main xib file or programmatically :
navigationController.rootViewController = myTableViewController;
After you can almost keep your function :
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(indexPath.row==0){
NSLog(#"RecherchePartenaireTypePartenaireViewController...");
recherchePartenaireTypePartenaireViewController=[[RecherchePartenaireTypePartenaireViewController alloc] init];
[self.navigationController pushViewController:recherchePartenaireTypePartenaireViewController animated:YES];
[recherchePartenaireTypePartenaireViewController release];
}
}
But this function will be in myTableViewController.
In your code, you were removing your navigationController's view from the view hierarchy. So it's normal that nothing came up when you were pushing something, because UINavigationController handle push by pushing the next controller's view on it's own view.
Here is a nice Apple's sample that could help you :)
http://developer.apple.com/library/ios/#samplecode/TheElements/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007419
In your code uitableview is not a navigation type view.So,When you are adding the UITableview to the navigationcontroller's view,superview is uitableview.Ans in didselectrowAtIndexPath you are pushing on the UITableview but not on the NavigationController.So make the UITableview as navigationtype.And then add it to navigationController.And do the same whatever you did.
As the title says none of my tableview controller methods are being called.
The steps I went through to create my table view are as follows.
1) I created a new file based on UITableViewController and selected the create with xib option. I Named my file myStuffViewController.
2) I have a rootview controller which is a UIViewController. In this view I have a navigation controller that I want to push my tableview controller onto at a certain point.
3) I setup my tableview and nav controller like so
mystuff = [[MyStuffViewController alloc]initWithNibName:#"MyStuffViewController"bundle:[NSBundle mainBundle]];
accountView = [[AccountView alloc] initWithNibName:#"Login" bundle:[NSBundle mainBundle]];
accountViewNavController = [[UINavigationController alloc] init];
accountViewNavController.delegate = self;
NSArray *ar= [NSArray arrayWithObjects:accountView,mystuff, nil];
[accountViewNavController setViewControllers:ar animated:NO];
[accountViewNavController popToRootViewControllerAnimated:NO];
accountView.title=#"Login";
4) Then when a user pushes a button I want to push the table view controller onto the stack like this.
[accountViewNavController pushViewController:mystuff animated:YES];
I've even tried calling [self.tableView reloadData] but none of the methods get called.
Could somebody propose why my table view methods are not being called?
EDIT 1
Just so I'm being as clear as I can be here is what my header file looks like. To be it doesnt seems like I'm missing anything.
#interface MyStuffViewController : UITableViewController<UITableViewDataSource,UITableViewDelegate> {
RemixView *remixView;
NSMutableArray *remixListArray;
TBXML*tbxml;
}
#property(nonatomic,retain)NSMutableArray *remixListArray;
#property(nonatomic,retain)RemixView *remixView;
#property(nonatomic ,retain)TBXML *tbxml;
-(void)fetchRemixList:(NSString *)uid key:(NSString *)k1;
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath;
#end
Check
You declare in the .h file that you implement the two table view delegates UITableViewDelegate & UITableViewDatasource
In the NIB make sure you link to your delegate in file owner OR if you have created the TableView programmatically make sure you set the delegate ivar also.
Then see if the delegate methods start getting called
I am doing a book kinda application using a viewBased application. The mainView acts as the backgroundView for loading pages. Each page is a different view and have its own nib. When i swipe on a page(actually on the mainView which have loaded the current view/page), that page will be removed and the next/previous page will be added.
[currentPage.view removeFromSuperview];
[self.view insertSubview:nextPage.view atIndex:0];
I have added a popoverController with a barbutton in this mainView. Its intialized with a tableviewController class named popClass. PopClass is another UITableViewController class which will act as the parent for the popViewController.
self.myPopController = [[PopController alloc] initWithStyle:UITableViewStylePlain];
self.myPopOverController = [[UIPopoverController alloc] initWithContentViewController:myPopController];
When I select certain row in the popover, I want the backgroundview(mainView) to load the page corresponding to the number of the row.
For that I have written a function in bookView(mainView) Controller class. And is calling it from the popOver's parent class when i select certain row.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSInteger toPageNumber = indexPath.row + 1;
[viewController changeToPage:toPageNumber];
}
Function and the lines of code are executing but nothing is happening. Even the log lines are printed but no action takes place. The code is the same for removing a page and adding another page which is working successfully when i swipe the view/page.
What is the problem? OR is there anyother way to make the view change in mainView by using the popover?
You need to have refernce of the background view controller in the popover controller.
In the PopController controller you should have a delagate like:
#interface PopController: UITablViewController{
//// other varibales;
id delegate;
}
#property (nonatomic, retain) id delgate;
Now from the class in which you are showing the popovercontroller
you should add this line:
[myPopController setDelegate:self];
Then you can easily acces any method of the main view controller class. By using
[delegate callTheRequiredMethod];
Hope this helps.
Thanks,
Madhup
It's hard to tell what's going wrong without looking at the code. That said, here's what I'd do:
(1) When a row is selected in mainView, present the popoverController modally:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
PopoverViewController *vc = [[PopoverViewController alloc] init];
[self.navigationController presentModalViewController:vc animated:YES];
[vc release];
}
(2) When something changes in the popoverController, for example a row is selected, set a value in the parentViewController (which should be the MainView):
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
self.parentViewController.value = someValue;
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
(3) Dismiss the popoverController where-ever you choose by calling:
[self dismissModalViewControllerAnimated:YES]`
I just filled my UITableView with Planets. I would like each cell clicked to open into a new Xib (if this sounds like the wrong approach please direct). I can get a secondviewcontroller working, its getting the thirdviewcontroller and fourthviewcontroller working? Thanks.
Place your main view controller (the one with the table) inside a UINavigationController. Then, when the user selects a row, push a new view controller onto it.
The following function will help. As Ben Gottlieb said your main view controller will need to be in a UINavigationController. You need to implement the delegate method for didSelectRowAtIndexPath and this is where you create the new controller for your new view and load it.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
YourViewController *controller = [[YourViewController alloc] initWithNibName:#"YourViewController"bundle:nil];
[[self navigationController] pushViewController:yourViewController animated:YES];
[yourViewController release]; // don't leak memory
}
Based on the row number you can decide which nib to load.