(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"DetailPlacePage"]) {
NSIndexPath *indexPath = [self.Allplace indexPathForSelectedRow];
NomadPlaceDetailViewController *placedetailcontroller = segue.destinationViewController;
placedetailcontroller.myDictionary = [self.placeArray objectAtIndex:indexPath.row];
}
}
This is the code I use to prepare segue for UIviewcontroller.
Can't see the next view controller , screen gets blank and just navigation bar is shown .
Try casting your NomadPlaceDetailViewController:
NomadPlaceDetailViewController *placedetailcontroller = (NomadPlaceDetailViewController *)segue.destinationViewController;
Related
I am using John Lluch's SWRevealViewController which works great, except I cannot figure out how to set selectors in the destination view controller as I do in segues for other UIViewControllers.
Has anyone else encountered this problem?
Here is my code:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Set the title of navigation bar by using the menu items
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
UINavigationController *destViewController = (UINavigationController*)segue.destinationViewController;
if ([segue.identifier isEqualToString:#"goalSegue"]) {
if ([segue.destinationViewController respondsToSelector:#selector(setTitleForViewController:)]) {
// use performSelector:withObject: to send without compiler checking
// (which is acceptable here because we used introspection to be sure this is okay)
NSString * titleText = #"Athlete Goals";
[segue.destinationViewController performSelector:#selector(setTitleForViewController:) withObject:titleText];
} else destViewController.title = [[menuItems objectAtIndex:indexPath.row] capitalizedString];
} else destViewController.title = [[menuItems objectAtIndex:indexPath.row] capitalizedString];
}
I have used this code in prepareForSegue in other view controllers. The selector exists in the destination TableViewController, but SWRevealViewController passes over if-statement without executing.
I think the problem lies in the fact that you are trying to run a selector method on a UINavigationController and not the actual TableViewController in which the selector resides. Notice that destViewController is a UINavigationController, which has your TableViewController inside it.
So actually, you can try the following code and see if it works (I've tried this in a sample project using SWRevealViewController and it works)
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Set the title of navigation bar by using the menu items
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
UINavigationController *destViewController = (UINavigationController*)segue.destinationViewController;
YourTableViewController *tableController = (YourTableViewController *)[destViewController childViewControllers].firstObject;
if ([segue.identifier isEqualToString:#"goalSegue"]) {
if ([tableController respondsToSelector:#selector(setTitleForViewController:)]) {
NSString * titleText = #"Athlete Goals";
[tableController performSelector:#selector(setTitleForViewController:) withObject:titleText];
} else destViewController.title = [[menuItems objectAtIndex:indexPath.row] capitalizedString];
} else destViewController.title = [[menuItems objectAtIndex:indexPath.row] capitalizedString];
}
As far as I understand, this may not exactly be a problem with SWRevealViewController.
Hope this helps.
i have a project which is basically a uitableview populated with a mutable array and has a search bar
now the uitableview has title and subtitle which are populated with different mutable arrays ..
when you tap on a cell (from the view or from the search view) it pushes the title to a new view controller.
i need the subtitle to be pushed also to the new view controller
i tried every thing i know but i had no success
i have attached the project so you can see how its coded and possibly tell me how to fix it
http://ezzati.net/KuwaitFood.zip
please help
Please replace the function below.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"ShowDetail"]) {
NSString *object = nil;
NSIndexPath *indexPath = nil;
if (self.searchDisplayController.isActive) {
indexPath = [[self.searchDisplayController searchResultsTableView] indexPathForSelectedRow];
object = self.results[indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
object = self.objects[indexPath.row];
}
[[segue destinationViewController] setDetailLabelContents:object];
[[segue destinationViewController] setNumberdetailLabelContents:[sender detailTextLabel].text];
}
}
You have to assign a identifier to the segue (the arrow from your table view controller to the new controller in your storyboard) and then use this function to grab the destination view controller and set it's property with the data you want to send:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"identifier"])
{
SecondViewController *vc = [segue destinationViewController];
// get the selected item index
NSInteger index = [self.tableView indexPathForCell:sender].row;
// set the data property for the second view (pass data)
vc.theProperty = [self.data objectAtIndex:index];
}
Now you can find theProperty on your SecondViewController filled with data from the table view controller.
EDIT: I've reviewed your code. for your case do this:
in -tableView: didSelectRowAtIndexPath: change self to indexPath like this:
[self performSegueWithIdentifier:#"ShowDetail" sender:indexPath];
and in prepareForSegue do this:
DetailViewController *vc = [segue destinationViewController];
// get the selected item index
NSInteger index = ((NSIndexPath *)sender).row;
// index of searched object in self.objects
NSInteger trueIndex = [self.objects indexOfObject:[self.results objectAtIndex:index]];
// set the data property for the second view (pass data)
vc.detailLabelContents = [self.objects objectAtIndex:trueIndex];
vc.numberdetailLabelContents = [self.numbers objectAtIndex:trueIndex];
the problem was because you were using index of self.results and applying it to self.objects which was 0, so you were always getting the first object "You Tube"
change the last line of
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
as below
[[segue destinationViewController] setDetailLabelContents:[sender detailTextLabel].text];
I have a segue with three transitions (see code below). The first from a button. That works perfectly. The second by tapping on the cell in a table view. That one works perfectly too. The third is an accessory button in the tableview cell. This one opens the proper view controller, but does not pass a reference to the patient as I have coded. I have verified this by an NSLog statement in the viewDidLoad of the new view controller and it shows patient as being null.
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"addPatient"]) {
// to add a new patient (selection segue)
UINavigationController *navigationController = segue.destinationViewController;
RXAddPatientViewController *addPatientViewController = (RXAddPatientViewController*)navigationController.topViewController;
Patient *addPatient = [NSEntityDescription insertNewObjectForEntityForName:#"Patient" inManagedObjectContext:[self managedObjectContext]];
addPatientViewController.addPatient = addPatient;
}
if ([[segue identifier] isEqualToString:#"toPrescriptions"]) {
// to view prescriptions for the selected patient (selection segue)
RXPrescriptionsViewController *prescriptionViewController = [segue destinationViewController];
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
Patient *selectedPatient = (Patient*) [self.fetchedResultsController objectAtIndexPath:indexPath];
prescriptionViewController.selectedPatient = selectedPatient;
NSLog(#"Selected Patient is %#", selectedPatient.patientFirstName);
}
if ([[segue identifier] isEqualToString:#"editPatient"]) {
// to edit the selected patient (accessory action)
UINavigationController *navigationController = segue.destinationViewController;
RXEditPatientViewController *editPatientViewController = (RXEditPatientViewController*)navigationController.topViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
Patient *editPatient = (Patient*) [self.fetchedResultsController objectAtIndexPath:indexPath];
// passing a reference to the editPatientViewController
editPatientViewController.editPatient = editPatient;
NSLog(#"Selected patient is %#", editPatient.patientFirstName);
}
}
The indexPathForSelectedRow will be null when you click on the accessory button because you're not selecting the row. However, the sender argument in prepareForSegue:sender: will be the cell that the accessory button is contained in. So, you should use the following method to get the indexPath (notice that I changed the typing of the argument to UITableViewCell from id):
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UITableViewCell *)sender {
if ([[segue identifier] isEqualToString:#"editPatient"]) {
// to edit the selected patient (accessory action)
UINavigationController *navigationController = segue.destinationViewController;
RXEditPatientViewController *editPatientViewController = (RXEditPatientViewController*)navigationController.topViewController;
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
Patient *editPatient = (Patient*) [self.fetchedResultsController objectAtIndexPath:indexPath];
// passing a reference to the editPatientViewController
editPatientViewController.editPatient = editPatient;
NSLog(#"Selected patient is %#", editPatient.patientFirstName);
}
My application use a different master detail, its consist in an initial ViewController with a tableView, but when the user click the Add button in the navigation controller I need send an object using the follow function:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"AddDGV"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSManagedObject *object = [[self fetchedResultsController] objectAtIndexPath:indexPath];
[[segue destinationViewController] setDetailView:object];
}
}
The code works fine when the destination is another ViewController, but my application was designed to have TabBarController instead a ViewController. This TabBar have 2 tabs, each one with a different Navigation Controller, and the first one is the target to the identifier "AddDGV". I created the .m/.h files and associated the class in the storyboard, and set the instance variable "DetailView" as ID.
#property (strong, nonatomic) id detailItem;
The problem is the compiler don't know this variable, because the command [segue destinationViewController] contains the view controller whose contents should be displayed at the end of the segue. As the end of the segue is a TabBarController, the function doesn't work.
Someone knows how fix it???
Typecast the output of
[segue destinationViewController]
as follows
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"AddDGV"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
NSManagedObject *object = [[self fetchedResultsController] objectAtIndexPath:indexPath];
[(YourDestinationViewController *)[segue destinationViewController] setDetailView:object];
}
}
So I have a UITableView, and the cells are connected to a UIStoryboardSegue in order to open a new UIViewController. After clicking a cell prepareForSegue get's called and everything works fine.
QUESTION: In the follwoing method how can i know what is the indexPath of the selected cell in my TableView?
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
ObjectDetailViewController *mvc = [segue destinationViewController];
// PassingObject *obj = [self.array objectAtIndex: ? ];
mvc.passingObject = obj;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Assume self.view is the table view
NSIndexPath *path = [self.tableView indexPathForSelectedRow];
DetailObject *detail = [self detailForIndexPath:path];
[segue.destinationViewController setDetail:detail];
}
Instead of [self.tableView indexPathForSelectedRow] (look at the DJPlayer answer) you can use [self.tableView indexPathForCell:sender], since sender is a selected cell in this case.