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.
Related
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 am trying to go from a UITableView with prototype cells to a detailviewcontroller of the item I selected on.
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"historyToDetail"])
{
BYFHistoryDetailViewController *controller = (BYFHistoryDetailViewController *)segue.destinationViewController;
controller.workOut = [[BYFWorkOut alloc] init];
controller.workOut=_selectRow;
}
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
BYFHistoryTableViewController *detailViewController =[[BYFHistoryTableViewController alloc] init];
NSArray *items = [[BYFworkOutStore sharedStore] allItems];
BYFWorkOut *selectedItem = items[indexPath.row];
_selectRow = selectedItem;
}
What is not happening is the transition from the table to detail I have a push segue from the prototype cell to the details.
What am I missing?
You are doing quite a lot wrong here. When using segue's you don't create an instance of the class. You simply call:
[self performSegueWithIdentifier:#"MySegue" sender:self];
This will use the segue you have defined in the storyboard. Where MySegue is the segue ID you created.
When you want to pass in data you use the callback
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
BYFHistoryDetailViewController *vc = (BYFHistoryDetailViewController *)[segue destinationViewController];
vc.workOut = selectedItem;
}
But using this callback will mean you will need to store selectedItem somewhere after you click the row so you can access it here.
EDIT
Your code seems a bit odd here also.
You set workout to a new object.
detailViewController.workOut = [[BYFWorkOut alloc]init];
Create another object from data.
NSArray *items = [[BYFworkOutStore sharedStore] allItems];
BYFWorkOut *selectedItem = items[indexPath.row];
And then assign the new object, overwriting the previous one.
//give detail view controller a pointer to the item object in row
detailViewController.workOut = selectedItem;
There is no need to have the first line of code at all
EDIT 2
If you only going to be using the one selected item at a time. you can do this in your UITableViewController class.
#implementation MyTableViewControllerClass
{
BYFWorkOut *_selectedItem;
}
inside didSelectRowAtIndexPath:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSArray *items = [[BYFworkOutStore sharedStore] allItems];
_selectedItem = items[indexPath.row];
}
EDIT 3
I've modified the code you posted here. You didn't add the first line of code i posted. Please look at this:
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"historyToDetail"])
{
BYFHistoryDetailViewController *controller = (BYFHistoryDetailViewController *)segue.destinationViewController;
controller.workOut = _selectRow;
}
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSArray *items = [[BYFworkOutStore sharedStore] allItems];
_selectRow = items[indexPath.row];
[self performSegueWithIdentifier:#"historyToDetail" sender:self];
}
You need to name your segue and call the method:
[self performSegueWithIdentifier:#"MySegue" sender:self];
I have a table with 5 cells and if the user clicks my second cell for example, I want to show another table or another page.
Is using
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath`
the way ?
Here is an example of navigating to another view controller when the user clicks on the second cell (assuming you have a navigation controller):
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if(indexPath.row == 1){
MyViewController * vc = [[MyViewController alloc] init];
[self.navigationController pushViewController:vc animated:YES];
}
}
sample Link :http://www.tutorialspoint.com/ios/ios_ui_elements_tableview.htm
if (indexPath.row ==1)
{
//Second cell index path its move another class xib
classname *yourcontroller = [[classname alloc] initWithNibName:#"xib file name" bundle:nil];
yourcontroller.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentViewController:helpcontroller animated:YES completion:nil];
}
If you are using a Storyboard, you may skip tableView:didSelectRowAtIndexPath: and use prepareForSegue:sender: instead:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"__SEGUE_IDENTIFIER__"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
SomeOtherViewController *vc = (SomeOtherViewController *)segue.destinationViewController;
// assign something to vc
}
}
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.
So I have the didSelectRowAtIndexPath method into a UITableViewController.
The TableView goes to a UIViewController which is controlled by a NavigationController.
I want to send the indexPath.row to the class called by the NavigationController, is there any way to send a parameter to another class?
My app scheme is:
TabBarController ---> NavigationController ---> TableViewController ---> UIViewController
If you are using storyboard:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
UITableViewCell *cell = sender;
// Make sure your segue name in storyboard is the same as this line
if ([[segue identifier] isEqualToString:#"YOUR_SEGUE_NAME_HERE"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
// Pass any objects to the view controller here, like...
[vc setIndexPath:indexPath];
}
}
else
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row == 0) {
YourViewController *vc = [[YourViewController alloc] initWithNibName:#"YourViewController" bundle:nil];
[vc setIndexPath:indexPath];
}
}