I was using initWithNibName to push the cells to detail views but I want to use single storyboard rather than having numerous nib files. The below code is supposed to push the view to subcategoriesViewController when the cell is clicked. the cells are dynamic from json data.
Its not giving any errors. Do you think its an issue with navigation control? Just to test, I added a button on this view and it works; when I click it, it does push to next view.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *dict = [rows objectAtIndex: indexPath.row];
subcategoriesViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"subcategoriesViewController"];
controller.CATNAME = [dict objectForKey:#"C_NAME"];
controller.CATNUMBER = [dict objectForKey:#"CAT_ID"];
[self.navigationController pushViewController:controller animated:YES];
// [controller release];
}
Okay I think I have found the cause; but don't know how to fix it.
The tableview in this controller is actually a subview of a viewController. I duplicated these files and created a new view which is a TableViewController. This code, when used in the TableViewController does the job, but it doesn't do it when used in a controller where the tableview is a subview of a ViewController.
I want the table to be a subview because I want to put an image above the table. So, I think the problem here is this line:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
It does not reference the table in the view. Can anyone tell me how to modify this so it would reference the table within the view?
If didSelectRow... is not being called then your view controller is probably not set as the delegate of your table view.
This is set up for you automatically when using a UITableViewController but you have to explicitly do it when using a standard view controller.
An answer to your problem is often that self.navigationController is in fact nil because there is no navigation controller for your view. You perhaps have to get a pointer to the navigation controller of your projet and push your view on it.
Related
Context: I am creating an IOS application in Objective C with the ArcGIS Runtime SDK. My root view controller is a map. I have the option to create spatial bookmarks and view them in a table view that is pushed over the view. I have a UISearchController on the table view to be able to filter out the bookmarks. If you select a bookmark without searching, you are automatically panned to that location. This is done by popping all view controllers, and loading the root view controller with a flag for the bookmark variable to set as the starting extent.
I would like this same functionality with the searchController table view.
However, I am either unable to dismiss the searchController and the bookmark is zoomed to, or the search controller is dismissed, and the user is brought back to the initial table view.
What I have so far:
In the didSelectRow method on the searchController TableView:
(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
//Accept the spatial envelope and save it to the shared variable to be passed to main view controller
//Now dismiss the searchController and call method to zoom to bookmark
[self.navigationController dismissViewControllerAnimated:NO completion:^{
//reference to shared instance method
[[BookmarksTableViewController sharedBookmark] zoomToBookmark];
}];
In BookmarksTableViewController.m
-(void)zoomToBookmark{
UIViewController *myController = [self.storyboard instantiateViewControllerWithIdentifier:#"viewController"];
[self.navigationController pushViewController: myController animated:YES];
//clear the navigation stack
self.navigationController.viewControllers = [[NSArray alloc] initWithObjects:myController, nil];
}
To me it seems like this should work, but all that happens is the UISearchController is dismissed, then the table view is not dismissed, and I am back where I was before I entered search text.
Any thoughts on a better way to dismiss the UISearchController or how to get back to my root view controller?
Hope you mean to this answer
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self dismissViewControllerAnimated:NO completion:nil];
}
i am trying to make an app in which i use tableview.
I am populating the tableview and i am able to display data in the table. Now what i am trying to do is when i click a specific cell in the tableview i want to load a particular xib file in different folder. For all other cell i want to load second tableview. i am using a storyboard.
i am using
(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([((UITableViewCell *)sender).textLabel.text isEqualToString:#"ABCD"]) {
ABCD *abcdViewController = [[ABCD alloc] initWithNibName:#"ABCD" bundle:nil];
// Push the view controller.
[self.navigationController pushViewController:ABCDViewController animated:YES];
}
// Pass the selected object to the new view controller.
NSLog(#"%#", ((UITableViewCell *)sender).textLabel.text);
MethodsViewController *methodsViewController = segue.destinationViewController;
NSString *rowTitle = ((UITableViewCell *)sender).textLabel.text;
NSDictionary *selected = [[self methodsDict] objectForKey:rowTitle];
methodsViewController.rows = [selected objectForKey:#"rows"];
methodsViewController.methodsDict = [selected objectForKey:#"methodsDict"];
}
This is the code i am using. i made this code after searching the internet.
but the problem is
but when i build and run this the first tableview is shown and when i click on the ABCD cell the xib loads but the navigation bar is covering the upper portion of the xib file and when i click on the back button in the navigation bar it takes me to the black blank page and shows a error
nested push animation can result in corrupted navigation bar
Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.
and the app stops
I dont know what i am doing wrong i am new to ios
I hope you understand my problem
Thanks in advance
You have at least three possible approaches to what you are trying to do.
The easiest one is using shouldPerformSegueWithIdentifier: to control exactly when segueing as specified in IB and when pushing your ABCD view controller instead:
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender{
if ([((UITableViewCell *)sender).textLabel.text isEqualToString:#"ABCD"]) {
ABCD *abcdViewController = [[ABCD alloc] initWithNibName:#"ABCD" bundle:nil];
// Push the view controller.
[self.navigationController pushViewController:ABCDViewController animated:YES];
return NO;
}
return YES;
}
This should work pretty easily for you, since it is similar to what you have been trying to do with prepareForSegue:. The fault with your current approach using prepareForSegue: is that you are both pushing your ABCD controller and doing the segue. shouldPerformSegueWithIdentifier: allows you to cancel the segue, so to say, when you are going to push manually.
Another approach would be using manual segues:
you can create a manual segue in IB by dragging from the view controller (as opposed to dragging from the prototype table cell); you can create multiple named segues;
in your table view delegate you override tableView:didSelectRowAtIndexPath: so that it calls performSegueWithIdentifier::
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *identifierOfSegueToCall;
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:nowIndex];
if ([cell.textLabel.text isEqualToString:#"ABCD"]) {
identifierOfSegueToCall = #"ABCDSegueIdentifier";
} else {
identifierOfSegueToCall = #"XYWZCellSegueIdentifier";
}
[self performSegueWithIdentifier:identifierOfSegueToCall sender:self];
}
Finally, a third approach would be defining two different cell prototypes for your table view and segueing from each prototype cell into the appropriate view controller. This is similar to what you have already done for setting up your current segue, only you should add a new prototype cell and define a specific segue from it.
I have this code to navigate from my tableview to another tableview. But it doesnt navigate to the right tableview. It seems that it creates another view that it navigates to and not the one on my storyboard that I want to go to.
Is this because I create an object?
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *) indexPath
{
ValjKupongViewController *vk = [[ValjKupongViewController alloc]init];
[self.navigationController pushViewController:vk animated:YES];
}
How can I write this the right way so that I navigate to my view in storyboard that have the class ValjKupongViewController?
Very grateful for help!
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *) indexPath
{
[self performSegueWithIdentifier: #"My Custom Segue" sender: self];
}
In your StoryBoard
Step 1 Ctrl and Drag the mouse from the
View Controller on the left to the View Controller on the right.
View Controller on the left = The View Controller you are transitioning FROM.
View Controller on the right = The View Controller you are transitioning TO.
Step 2 Select push as the type of Segue
Step 3 Now your View Controllers will have the Segue between them (as seen below)
Step 4 You need to name the Segue to be able to identify it.Click on the Segue, then go to the attributes inspector and set the Identifier. (In the example it is set to My Custom Segue.
Make sure this is the same as in the code above.
i.e. [self performSegueWithIdentifier: #"My Custom Segue" sender: self];
Is this because I create an object?
Yes you are allocating and initialising a ValjKupongViewController object each time didSelectRowAtIndexPath is called. With this line of code
ValjKupongViewController *vk = [[ValjKupongViewController alloc]init];
You then transition to it with this line
[self.navigationController pushViewController:vk animated:YES];
I spent almost a day with this issue, someone please help me out! I'm trying to push the view from a tableview controller. It's not responding.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NewsDetailViewController *ndvc = [[NewsDetailViewController alloc] initWithNibName:#"NewsDetailViewController" bundle:nil];
[self.navigationController pushViewController:ndvc animated:YES];
}
I am guessing that your self.navigationController is nil. And from the comments I get that you do not use a Navigation Controller. I would say, create a Window Based Application with the Navigation Controller as the rootViewController and inside that, add the tableView to the view of the navigationController and then you should have no problem.
Your NewsDetailViewController likely overrides initWithNibName function. Use breakpoints to see why this is returning nil. Make sure you are passing the right NIB file name (i.e. make sure NewsDetailViewController.xib exists in your project)
I am using a Navigation based application.The third view in my flow has a UITabbar added.On clicking one of the tabs a TableView is displayed.On selecting a row of this TableView I wish to display another view.
My code works fine to the point of displaying the different views on clicking the tabs.When I select a row of the TableView nothing is displayed.I use a plist to populate the tableView. I added the following code
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
PropertyRegistration *dvController = [[PropertyRegistration alloc] initWithNibName:#"PropertyRegistration" bundle:[NSBundle mainBundle]];
//dvController.selectedCountry = selectedCountry;
[self.navigationController pushViewController:dvController animated:YES];
[dvController release];
dvController = nil;
}
Can someone help?
I assume the third view controller is a UITabBarController which is working fine. But your root controllers in each tab, are you sure that they are UINavigationControllers? They (or at least the one containing your table view) need to be.
If your third view controller is not a UITabBarController, I'd recommend that you change it to be so. Then your structure would be something like:
UINavigationController: pushes through two UIViewControllers, then a UITabBarController (your third).
UITabBarController contains some view controllers, one or more of which is a UINavigationController. This navigation controller has a UIViewController as it's root view controller, and has other controllers pushed onto it.