Here's my problem. I have data being passed into the 'second view controller' by mySQL which currently works great. But when I select on any of the from (UITableView) cells, I am currently not able to open a new view to show the data.
I believe the code issue is with
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
detailedViewController *productinfo = [self.storyboard instantiateViewControllerWithIdentifier:#"productDetails"];
//Retrieve current user array
foodProducts *currentProduct = [bakeryProductArray objectAtIndex:indexPath.row];
productinfo.productName = currentProduct.productName;
productinfo.productImage = currentProduct.productImgUrl;
productinfo.productDescription = currentProduct.productDescription;
[self.navigationController pushViewController:productinfo animated:YES];
}
There have been others who have over came this using nibs but not storyboard.
Can someone point out where I have gone wrong or something I have fundamentally missed?
(I have another project which fully working with navigation controller only. Though this is the 1st project which I have tried to use with the tab bar navigation).
The best way to handle this with a storyboard is to create a segue to the detail view from your mainViewController. This can be from your actual cell or from the controller. In your prepare for segue method, pass the object to the detail view. This uses a fetchedResultsController but the idea is the same. Get the selected cell and pass the object to the detail view.
Here is a sample of how you could pass it while using a segue from the cell itself. Create a segue from the tableViewCell in IB for "selection". Drag that segue to your detailViewController and set the identifier to ShowDetailView then add the following prepareForSegue method.
Make sure to have a property (foodProduct) on your detailViewController that will hold the reference to your selected object. That's what you will pass from your mainViewController.
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"ShowDetailView"])
{
DetailViewController *detailViewController = [segue destinationViewController];
foodProducts *currentProduct = [bakeryProductArray objectAtIndex:[self.tableView indexPathForSelectedRow]];
detailViewController.foodProduct = currentProduct;
}
}
try this .....
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
Decriptionview *detail = [self.storyboard instantiateViewControllerWithIdentifier:#"Decription"];//#"Decription" is Storybord Id of UiViewController of Decriptionview
detail.wndecDecription=[SortedDecription1 objectAtIndex:indexPath.row];
detail.wndectitle=[SorttedTitle1 objectAtIndex:indexPath.row];
detail.wndeclink=[SortedLink1 objectAtIndex:indexPath.row];
detail.wndecdate=[SorttedDate1 objectAtIndex:indexPath.row];
detail.imgeurl=[sorttedMainImage1 objectAtIndex:indexPath.row];
[self.navigationController pushViewController:detail animated:YES];
}
Related
I have tableViewController class and want to pass a property to another view controller.
I declared my property,
#property (strong, nonatomic) NSIndexPath *selection;
In protocol tableView:didSelectRowAtIndexPath:, I want to set my selection value into indexPath selected.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
// change your selection property
[self setSelection:indexPath];
}
I want to pass that selection into destination view controller by prepareForSegue:sender:
if ([segue.identifier isEqualToString:#"updateItem"]) {
UINavigationController *navController = (UINavigationController *)[segue destinationViewController];
UpdateViewController *viewController = (UpdateViewController *)[navController topViewController];
[viewController setManagedObjectContext:self.managedObjectContext];
NSManagedObject *record = [self.fetchResultsController objectAtIndexPath:self.selection];
if (self.selection) {
[viewController setRecord:record];
}
// reset selection
[self setSelection:nil];
}
My problem is, I NSlog-ing that property on destination view controller and for the first time it showed as null. Secondly, it showed as it set for the first, and so on and so on. It showed what I set before.
So did I miss the concept of setting a property before it goes into another view controller destination? Please let me know this. Any help would be appreciated. Thank you so much.
I finally found the answer. I messed up with how to trigger segue. prepareForSegue runs first before didSelectRowAtIndexPath.
Refer to this we should use either of prepareForSegue or didSelectRowAtIndexPath. So I decide to set my selection in prepareForSegue by get its indexPathForSelectedRow.
[self setSelection:[[self tableView] indexPathForSelectedRow]
I am trying to push data from a UITableViewCell into another view controller. I have tried two separate ways, instantiateViewControllerWithIdentifier and also PrepareForSegue. In both instances the ViewController loads correctly but the data is not being passed across (either null, or the first array value).
Here is my instantiateViewControllerWithIdentifier method, when I log the variable within my ViewController it just returns null.
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *testNumber = [jobNumberArray objectAtIndex:indexPath.row];
NSLog(#"Job is... %#",testNumber);
StandardInfoViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"StandardInfoViewController"];
controller.JobNr = [jobNumberArray objectAtIndex:indexPath.row];
[self.navigationController pushViewController:controller animated:YES];
}
Prepare For Segue
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[self performSegueWithIdentifier:#"Details" sender: self];
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if([segue.identifier isEqualToString:#"Details"]){
StandardInfoViewController *controller = (StandardInfoViewController *)segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
controller.jobNumber = [jobNumberArray objectAtIndex:indexPath.row];
}
}
When I use the prepareForSegue call I get the first row of my Array, which I understand because it doesn't know the cell, but I don't know how to identify the Cell within the prepareForSegue call.
I hope this makes sense, and any help or pointers would be greatly appreciated.
Thanks
If you drag the segue FROM the tableView-cell in the storyboard, you will then get the cell itself as parameter sender.
then you can use tableView indexPathForCell:sender to get the actual index of the selected cell. Then just fetch your object normally.
I.e. you will not need to implement didSelectRowAtIndexPath
If you still want to use didSelectRowAtIndexPath, just pass the cell as the sender parameter manually. I.e:
[self performSegueWithIdentifier:#"Details"
sender:[self.tableView cellForRowAtIndexPath:indexPath]]
Although your first version with instansiateViewController should work, judging by your code.
Another pattern is to subclass the cells themselves, and let them have a property that is the object that they want to display. Then you can just fetch the object directly from the cell without calling the data-array itself.
Is this what you want?
This is how you identify Cell in prepareForSegue method.
**UITableViewCell *cell=[myTable cellForRowAtIndexPath:path];**
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
if([segue.identifier isEqualToString:#"Details"]){
StandardInfoViewController *controller = (StandardInfoViewController *)segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
**UITableViewCell *cell=[self.tableView cellForRowAtIndexPath:indexPath];**
controller.jobNumber = [jobNumberArray objectAtIndex:indexPath.row];
}
}
I have a table view with cells created with:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = #"GalleryCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
}
NSMutableArray *gallery = [gallerys objectAtIndex:indexPath.row];
cell.textLabel.text = [gallery objectAtIndex:1];
return cell;
}
What I need to be able to do is within the didSelectRowAtIndexPath, fire a segue to launch another view, this will also send some information across using the prepareForSegue method.
This issue is I am not sure how to go about creating the segue to be used in this instance as within the storyboard I have nothing to attach it to (no buttons etc) and the cells are created within the code, is it possible to also create the segue in the code? Or is there another method to this?
Okay, you can attach it to your table view controller, it is not necessary to attach it to a button. Just go to the storyboard and do the following:
Right click on the VC that you would like to push.
Under Presenting Segues in the menu click and hold 'push' and drag it to your table view controller.
Choose manual when the dialog shows above your table view controller.
Select the segue after it appears and go to its attribute inspector.
Choose a name for the segue.
Call performSegue
simply drag a segue from your table to destination Controller and give a name for that.
And in didSelectRowAtIndexPath call
[self performSegueWithIdentifier:#"MySegue" sender:self];
then following method will get called
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// here you can pass any value to new ViewController;
if ([segue.identifier isEqualToString:#"MySegue"]) {
YourNewViewController *VC = segue.destinationViewController;
VC.data = yourData;
}
}
Push your view controller
[self performSegueWithIdentifier:#"yourSegueID" sender:self];
You can send the information as below
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"yourSegueID"]) {
YourViewController *yourVC = segue.destinationViewController;
yourVC.information = myInformation;
}
}
I have a simple table view that can segue to an update-view-contoller to edit that row when the user taps on a row. Issue: I would like to segue to the update-view-contoller when the table view is in "edit-mode", otherwise nothing should happen.
I am using Storyboard to create the segue linking the prototype cell to the update-view-controller.
Any idea on how to make the segue work only if the table view is in "edit-mode"?
Here is my prepare for segue code that is invoked when the user taps on a row from the table view contoller. My segue has an identerfied called "ShowUpdate":
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"ShowUpdate"]) {
UpdateViewController *updateviewcontroller = [segue destinationViewController];
NSIndexPath *myIndexPath = [self.tableView indexPathForSelectedRow];
int row = [myIndexPath row];
NSString *selectedRow = [NSString stringWithFormat:#"%d", row];
updateviewcontroller.DetailModal = #[_Title[row], _Description[row], selectedRow];
}
}
Thanks for any help
How about a simple if check for isEditing property of the tableView?
#property(nonatomic, getter=isEditing) BOOL editing
Instead of making a segue from a prototype cell, I would drag it from the ViewController itself, and then check the above property in the didSelectRowAtIndexPath: delegate method and perform the segue in code from there.
Plus, you would need to set allowSelectionDuringEditing property somewhere in viewDidLoad or so.
self.tableView.allowsSelectionDuringEditing = YES;
Code:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (self.tableView.isEditing) {
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
[self performSegueWithIdentifier:#"ShowUpdate" sender:cell];
}
}
Segue construction:
I want to create table, and when click cell in table , the content will display in another view. Each of table has different design. How do I do that.
I don't enough to post image, you can see in this link. thanks.
Use this delegate method:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self performSegueWithIdentifier:#"InstructionToSection" sender:nil]; //"InstructionToSection" is seque name
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
InstructionSectionViewController * instructSection = [segue destinationViewController]; // InstructionSectionViewController is ur next viewcontroller. 1st u need to import your destination viewcontroller in header
instructSection.SelectedItem = #"Ur Passing value"; // selectedItem should be declare in InstructionSectionViewController as property, need to synthesize
}
For more detail refer to this link