I have an unwind segue that i am using, and then i have a prepare for segue that i am using to push data.
I need the unwind segue to push the data but i am having issues combining them.
Here is the unwind segue code -
- (IBAction)unwindFromDetailViewController:(UIStoryboardSegue *)segue {
// ViewController *detailViewController = [segue sourceViewController];
NSLog(#"%#", segue.identifier);
}
And here is the prepare for segue code -
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
NSIndexPath *indexPath = nil;
Recipe *recipe = nil;
if (self.searchDisplayController.active) {
indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
recipe = [searchResults objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
recipe = [recipes objectAtIndex:indexPath.row];
}
PersonDetailTVC *destViewController = segue.destinationViewController;
destViewController.recipe = recipe;
[self dismissViewControllerAnimated:YES completion:nil];
}
}
And here is what i tried which is unwinding the segue, but not pushing the data.
- (IBAction)unwindFromDetailViewController:(UIStoryboardSegue *)segue {
if ([segue.identifier isEqualToString:#"CustomTableCell"]) {
NSIndexPath *indexPath = nil;
Recipe *recipe = nil;
if (self.searchDisplayController.active) {
indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
recipe = [searchResults objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
recipe = [recipes objectAtIndex:indexPath.row];
}
PersonDetailTVC *destViewController = segue.destinationViewController;
destViewController.recipe = recipe;
[self dismissViewControllerAnimated:YES completion:nil];
}
}
Your question's rather incomplete so I can only answer based on assumptions...
First off, this method should be in the view controller you're returning to.
- (IBAction)unwindFromDetailViewController:(UIStoryboardSegue *)segue {
}
Secondly, use your prepareForSegue: method, not your unwindFromDetailViewController: method (which belongs in the first view controller), to pass your data from that second view controller. I believe though that you're using your forward segue's identifier and not your unwind segue's identifier in your if ([segue.identifier isEqualToString:#"showRecipeDetail"]) statement, that it's therefore returning false, and thus that entire block in your prepareForSegue: method isn't executing at all. (This line: [self dismissViewControllerAnimated:YES completion:nil]; is complete unnecessary since the unwind occurs automatically as long as everything's hooked up correctly.) So try removing the conditional for now just to see if the data is passed as expected, ex:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
NSIndexPath *indexPath = nil;
Recipe *recipe = nil;
if (self.searchDisplayController.active) {
indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow];
recipe = [searchResults objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
recipe = [recipes objectAtIndex:indexPath.row];
}
PersonDetailTVC *destViewController = segue.destinationViewController;
destViewController.recipe = recipe;
}
If you want to re-add a conditional specifying a check for your segue's identifier, you have to set an identifier specifically for the unwind segue.
Related
I know this question is asked many time , i had searched a lot and tried many solution but not worked. I have made a customize table view in which data is load from a service. The data load is quite limited , i have to show the detail of data into new view controller when user click on a cell. Its should pass data of the respective cell which carries data. I have tried segue technique to pass data to new vc but fails , its shows null in value which i'm passing. I have created some labels in new vc in which i'm calling the values from table view cell. My code is,
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"ShowDetail"]) {
//Do something
ShowViewController *destViewController = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
destViewController.tites = [_Title objectAtIndex:indexPath.row];
destViewController.prce = [_Price objectAtIndex:indexPath.row];
NSLog(#"PPPP is %#",destViewController.phon);
destViewController.ara = [_LandArea objectAtIndex:indexPath.row];
destViewController.phon = [_Phone objectAtIndex:indexPath.row];
destViewController.citi = [_City objectAtIndex:indexPath.row];
destViewController.loc = [_location objectAtIndex:indexPath.row];
destViewController.tye = [_type objectAtIndex:indexPath.row];
destViewController.Idss = [_Id objectAtIndex:indexPath.row];
destViewController.nam = [_name objectAtIndex:indexPath.row];
destViewController.emal = [_email objectAtIndex:indexPath.row];
destViewController.roomss = [_rooms objectAtIndex:indexPath.row];
destViewController.wash = [_washroom objectAtIndex:indexPath.row];
destViewController.flloors = [_floor objectAtIndex:indexPath.row];
destViewController.stat = [_status objectAtIndex:indexPath.row];
destViewController.descrp = [_descrip objectAtIndex:indexPath.row];
destViewController.countryy = [_country objectAtIndex:indexPath.row];
}
}
Issue in this question is that you are not populating the _Price and other arrays properly, so where you are populating _Title array , fill other arrays as well like _Price, _City
An outlet doesn't instantiate because an outlet is a variable (or property).
The objects in a nib are instantiated when that nib is loaded, and they are assigned to each outlet as immediately as possible afterward, after the objects are created but before awakeFromNib is sent to all relevant objects.
In your case you can pass data in ShowViewController and update the label in ShowViewController's viewDidLoad or viewDidAppear.
Define string in ShowViewController interface as
#property (strong, nonatomic) NSString * titesStr;
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"ShowDetail"]) {
//Do something
ShowViewController *destViewController = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
destViewController.titesStr = [_Title objectAtIndex:indexPath.row];
....
....
....
}
}
In ShowViewController viewDidAppear update your label as
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
tites.text = titesStr;
}
In place of passing data one by one you can use array also. Best implementation would be using model class.
EDIT
[self performSegueWithIdentifier:#"ShowDetail" sender:tableView];
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"ShowDetail"]) {
//Do something
UITableView *tv = (UITableView*)sender;
ShowViewController *destViewController = segue.destinationViewController;
NSIndexPath *indexPath = [tv indexPathForSelectedRow];
destViewController.tites = [_Title objectAtIndex:indexPath.row];
....
....
....
}
}
Make following changes in your code :
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self performSegueWithIdentifier:#"ShowDetail" sender:indexPath];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"ShowDetail"])
{
ShowViewController *destViewController =(ShowViewController *) segue.destinationViewController;
NSIndexPath *indexPath = (NSIndexPath *)sender;
destViewController.tites = [_Title objectAtIndex:indexPath.row];
destViewController.prce = [_Price objectAtIndex:indexPath.row];
// use this indexpath for segue
}
}
I'm a beginner in Objective C and I have an issue between my Table View Controller and ViewController. When I click on the cell nothing happens, I don't go in my view controller to have more details about my cell.
I use a push segue and I don't forget to give it an identifier and to do this code part in my TableView:
(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showDetails"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
ViewController *destViewController = segue.destinationViewController;
destViewController.details = data [indexPath.row];
}
}
My link between my two views is between the cell prototype and the ViewController window.
in didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self performSegueWithIdentifier:#"showDetails" sender:self];
}
in prepareForSegue:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"showDetails"])
{
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
ViewController *destViewController = segue.destinationViewController;
destViewController.details = data [indexPath.row];
}
}
I have an array of items displayed in a TableViewController. They display properly in the TVC. The code below segues, but it only segues to indexPath 0 of my array of MKMapItems, not the item from the cell that was clicked.
Any thoughts on where my mistake is?
#property (strong, nonatomic) NSArray *mapItems;
Each cell has a "Add POI" UIButton which that triggers a segue created with Interface Builder called "addPOISegue".
Here's the IBAction for the "Add POI" button:
- (IBAction)addPOIButtonClicked:(UIButton *)sender {
NSLog(#"Add POI button clicked");
[self performSegueWithIdentifier:#"addPOISegue" sender:sender];
}
Here's the `prepareForSegue
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UIButton*)sender {
// NSLog(#"The sender is %#", sender);
if ([[segue identifier] isEqualToString:#"addPOISegue"]) {
AddPOIViewController *destinationVC = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:sender.center];
NSLog(#"NSIndexPath *indexPath's index is %#", indexPath);
MKMapItem *item = _mapItems[indexPath.row];
// NSLog(#"ResultsTVC item is %#", item);
destinationVC.item = item;
}
}
The indexPath keeps getting set to 0. I suspect this is because I've got a button triggering the segue within the cell, but I'm stumped as to how to resolve this.
You should delete the button's action method, and connect the segue directly from the button to the next controller. In prepareForSegue, you can pass the button's origin, after converting it to the table view's coordinate system to the indexPathForRowAtPoint: method to get the indexPath of the cell that button is contained in,
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UIButton*)sender {
if ([[segue identifier] isEqualToString:#"addPOISegue"]) {
AddPOIViewController *destinationVC = segue.destinationViewController;
CGPoint p = [sender convertPoint:CGPointZero toView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:p];
NSLog(#"NSIndexPath *indexPath's index is %#", indexPath);
MKMapItem *item = _mapItems[indexPath.row];
// NSLog(#"ResultsTVC item is %#", item);
destinationVC.item = item;
}
}
#rdelmar figured it out. I needed a CGPoint due to the UIButton contained in my cell and referenced within my prepareForSegue method.
This code got it working:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UIButton*)sender {
// NSLog(#"The sender is %#", sender);
if ([[segue identifier] isEqualToString:#"addPOISegue"]) {
AddPOIViewController *destinationVC = segue.destinationViewController;
CGPoint point = [sender convertPoint:CGPointZero toView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:point];
NSLog(#"NSIndexPath *indexPath's index is %#", indexPath);
MKMapItem *item = _mapItems[indexPath.row];
NSLog(#"ResultsTVC item is %#", item);
destinationVC.item = item;
}
}
The following code is in my menuViewController.m. Now I want to go to another view when touch on a specific cell. What should I do to go to contactViewController?(I am using storyboard)
storyboard image:
https://drive.google.com/file/d/0BwOYR2GMJ7l8U1lYYVFVTWVkOG8/edit?usp=sharing
code:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
NSString *CellIdentifier = [menuItems objectAtIndex:indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if(indexPath.row==2)
{
}
}
- (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;
destViewController.title = [[menuItems objectAtIndex:indexPath.row] capitalizedString];
if ( [segue isKindOfClass: [SWRevealViewControllerSegue class]] ) {
SWRevealViewControllerSegue *swSegue = (SWRevealViewControllerSegue*) segue;
swSegue.performBlock = ^(SWRevealViewControllerSegue* rvc_segue, UIViewController* svc, UIViewController* dvc) {
UINavigationController* navController = (UINavigationController*)self.revealViewController.frontViewController;
[navController setViewControllers: #[dvc] animated: NO ];
[self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];
};
}
I want to go to another view when touch on a specific cell.
For this, I'd do it this way:
Step 1:
Drag from TableViewController to ContactViewController:
Step 2:
Select segue and specify the Segue Identifier (Show attributes Inspector tab in the right side bar)
I have named the Segue Identifier as SegueTestID
I chose Push as my style but it seems you might need Modal
And the corresponding code (in your MenuViewController.m) should be something like:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 2) {
[self performSegueWithIdentifier:#"SegueTestID" sender:self];
}
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
//following lines needed only if you need to send some detail across to ContactViewController
if ([segue.identifier isEqualToString:#"SegueTestID"]) {
ContactViewController *destinationViewController = segue.destinationViewController;
destinationViewController.strTest = #"Check";
//where strTest is a variable in ContactViewController. i.e:
//"#property (nonatomic, strong) NSString *strTest;"
//declared in `ContactViewController.h`
}
//...
}
PS: It seems you have alot in your -prepareForSegue: already.
Obviously... you'll need to hook things up properly.
In Storyboard , Do this ( In your case its contactviewcontroller ) give the name identifier name to contactViewController whatever you want as shown in image for showRecipeDetail
and you can go to the contactviewcontroller
and then
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
RecipeDetailViewController *destViewController = segue.destinationViewController;
destViewController.recipe = [recipes objectAtIndex:indexPath.row];
}
}
In above method it shows how to pass the data from current viewcontroller to destviewcontroller
where We simply set the property (i.e. recipeName) in the RecipeDetailViewController to pass the recipe name. Obviously, you can add other properties in the detail view controller to pass other recipe-related values. ( In your case it will be data you want to pass to contactviewcontroller)
When a segue is triggered, before the visual transition occurs, the storyboard runtime invokes prepareForSegue:sender: method of the current view controller. By implementing this method, we can pass any needed data to the view controller that is about to be displayed. Here, we’ll pass the selected recipe object to the detail view controller.
I am just trying to transfer a simple string from a UILabel in a prototype cell into a label in the next View Controller. Value of label.text in the viewDidLoad of the View Controller is returning (null).
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
mainCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (mainCell == nil) {
mainCell = [[dictionaryTableCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSString* date = [dateArray objectAtIndex:indexPath.row];
mainCell.viewLabel.text = date;
return mainCell;
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"View Segue"]) {
NSLog(#"View Load Segue Success");
ViewController *one = segue.destinationViewController;
one.label.text = mainCell.viewLabel.text;
}
}
What am I doing wrong here?
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"View Segue"]) {
NSLog(#"View Load Segue Success");
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
ViewController *one = segue.destinationViewController;
one.label.text = [dateArray objectAtIndex:indexPath.row];
}
}
And actually, assigning text to text label you should do in your viewController one's method(viewDidLoad or viewWillAppear). So, you need to make a property in viewController one for transferring NSString.
You can use indexPathForSelectedRow:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"View Segue"]) {
ViewController *one = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
one.textProperty = [dateArray objectAtIndex:indexPath.row];
}
}
Or you can also use sender if your segue is from the cell to the next scene, e.g.:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([segue.identifier isEqualToString:#"View Segue"])
{
ViewController *one = segue.destinationViewController;
NSAssert([sender isKindOfClass:[UITableViewCell class]], #"Not cell");
UITableViewCell *cell = sender;
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
one.textProperty = [dateArray objectAtIndex:indexPath.row];
}
}
Two things to note:
As a matter of good programming style, I am not retrieving the text value from the cell. I'm retrieving the text value from the model. You should not be relying upon the view for information to be passed along. Go back to the model, the original source of the information.
Do not set the text property of the label in the destination controller directly. The controls of the destinationController have not been created yet. You should defer setting controls until the destinationController's viewDidLoad. So, instead, create a NSString property in the destination controller:
#property (nonatomic, strong) NSString *textProperty;
Clearly, you should use a more descriptive name than textProperty, but hopefully you get the idea. Anyway, prepareForSegue can set this new property and the viewDidLoad of the destination controller should then use that NSString property to populate the text property of the UILabel, e.g.:
- (void)viewDidLoad
{
[super viewDidLoad];
self.label.text = self.textProperty;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
YourViewController *controller =[[YourViewController alloc] init];
[self presentModalViewController:controller animated:YES];
one.label.text = [dateArray objectAtIndex:indexPath.row];
}
Change the label.text after presentModalViewController. Now what happens?
- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^)(void))completion
I understand you are already using Segue. You should follow the other answer.