I have a app with UITableView (in PatientViewController) and every click on different cells should send different values to the ArticleViewController. I made every transition between ViewControllers with this code:
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main_iPhone" bundle:nil];
NewsViewController *mv = (NewsViewController*)[mainStoryboard instantiateViewControllerWithIdentifier:#"news"];
[self presentViewController:mv animated:YES completion:NULL];
I didn't want to use NavigationController and don't want to use Storyboard to create segue. So how can I do it with only writing code, without using Storyboard? Thank you.
You can create a UIStoryBoardSegue with the following :
UIStoryboardSegue :: initWithIdentifier:source:destination:
and then, from the source UIViewController, can call the following:
performSegueWithIdentifier:sender:
For details, refer to Overview section of UIStoryBoardSegue documentation.
Try this:
NewsViewController *nVC = [self.storyboard instantiateViewControllerWithIdentifier:#"news"];
[self presentViewController:nVC animated:YES completion:NULL];
If you don't want to make any view controller through Storyboard, make a view controller with XIB. then, call the following method to init an instance.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil;
When a cell is selected, you can use the following method to present a view controller that you want to show.
- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^)(void))completion
Related
I want to apply this (https://www.paxxio.in/checkout/onepage/) functionality in my app, I don't have idea that how will I apply this logic. Please see the above url.
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#end
Did not understood your question much though, if you want to open a view controller on tableviewCell click you can use tableview delegate method
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
}
inside this method you can load the view controller.
Now loading view controller can be done in many ways.
In case you are using story board and segue:
you can simply call
[self performSegueWithIdentifier:#"your segue identifier" sender:your view controller instance (optional)];
If you are using story board n yet not using segue then you can instantiate a view controller from story board identifier
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"your story board" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#" identifier of view controller you want to load"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:vc animated:YES completion:NULL];
If you are not using story board then instantiate view controller from xib :)
Happy coding buddy :)
My first view in the viewDidLoad has the following code
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Dialpad" bundle:nil];
self.vc = [sb instantiateViewControllerWithIdentifier:#"DialpadBoard"];
self.vc.delegate = self;
The header file contains the definition of the view controller
#property (nonatomic, retain) DialpadTableViewController *vc;
after catching an event the view loads a new modal view
- (void)handleEvent:(UIGestureRecognizer*)recognizer {
[self presentViewController:self.vc animated:YES completion:NULL];
}
The view also contains the method to dismiss the modal view:
- (void) dialpadControllerDidCancel:(SearchDialpadTableViewController *)controller {
[self dismissViewControllerAnimated:YES completion:nil];
}
The last method never gets called.
The problem is that the modal view when it is loaded has nil self.delegate. The new modal view is loaded from the storyboard as seen below. Why the delegate is nil? I cannot how a segue since the view is in another storyboard.
you can try this
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Dialpad" bundle:nil];
UINavigationController *nav= [sb instantiateViewControllerWithIdentifier:#"DialpadBoard"];
((SearchDialpadTableViewController *)[nav viewControllers][0]).delegate = self;
[self presentViewController:nav animated:YES completion:NULL];
Since we have the nav let's take the first controller and assign the delegate
the trick ;)
((SearchDialpadTableViewController *)[nav viewControllers][0]).delegate = self;
Does SearchDialpadTableViewController define a delegate protocol and does it have a property that is specific to that protocol?
The header for that file should look something like:
#protocol ViewControllerDelegateProtocol <NSObject>
- (void)dialpadControllerDidCancel:(SearchDialpadTableViewController *)controller;
#end
#interface ViewController : UIViewController
#property (weak, nonatomic) id<ViewControllerDelegateProtocol> searchPadDelegate;
#end
Then when the user taps Done which is I'm assuming what you're trying to do (send a delegate message when that happens). You would write something like
- (IBAction)donePressed:(id)sender
{
if ([self.searchPadDelegate respondsToSelector:#selector(dialpadControllerDidCancel)]) {
[self.searchPadDelegate dialpadControllerDidCancel:self];
}
}
you must be certain, that self.vc is a class, that you expected. It can be also NavigationController
I have another ViewController inside the same story board to which I want to switch by clicking a button. The problem is when I try to control-Drag the second view controller to create an Outlet inside the ViewController.m file of the primary viewcontroller, an outlet isn't created.
In Android we can open a new Activity with different UI from inside of another activity. I am sure same can be achieved in iOS as well, so my question is how can I create an outlet of the second view Controller and open it programmatically?
It is not possible in iOS to create an IBOutlet from one ViewController to another ViewController, But you can use a UIStoryboardSegue for the purpose.
I will suggest you to follow Tutorial: Storyboards from Apple Documentation. It will help you understand how ViewControllers are actually connected.
Opening SecondViewController programmatically is possible by using Storyboard Identifier, You need to provide storyboard identifier name for the class you want to switch to, see this image , in my demo i have used secondViewController
Now use this code inside your buttonClick event method.
- (IBAction)buttonClicked:(id)sender {
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:[NSBundle mainBundle]];
SecondViewController *secondViewController = (SecondViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:#"secondViewController"];
// Use this to show your UIViewController in modal transition.
[self presentViewController:secondViewController animated:YES completion:nil];
// Use this to show your UIViewController in push transition with navigation controller
//[self.navigationController pushViewController:secondViewController animated:YES];
}
Try this
Viewcontroller*homeVC;
[self.navigationController setNavigationBarHidden:YES];
UIStoryboard *storyBoard;
storyBoard=[UIStoryboard storyboardWithName:#"Main" bundle:[NSBundle mainBundle]];
homeVC=(HomeVC*)[storyBoard instantiateViewControllerWithIdentifier:#"HomeVC"];
[self.navigationController pushViewController:homeVC animated:YES];
As others mentioned, you cannot do this.
To override and launch VC and keep it's properties you can:
First, create segue between viewControllers: Zoom out the view by double clicking the background of interface builder. Ctrl+drag from one VC to another and choose type of segue (e.g. show).
Than create action for button, in which you can:
[self performSegueWithIdentifier:#"myIdentifier" sender:self];
After that, in -(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender check identifier of segue, set new yourCustomClassViewController and voila!
if ([segue.identifier isEqualToString:#"myIdentifier"]) {
myCustomClassViewController *myCustomVC = [segue destinationViewController];
myCustomVC.oldProfile = newProfile;
}
What I did:
I am using scrollview to view some UIView(s), with paging enabled.
In last page in subview of scrollView I added a button.
I also wrote a function which is in subclass of UIView ,which is invoked when we press that button.
I want to view storyboard when I press that button.
You need to implement protocol method for custom UIView class.
For example;
#import <UIKit/UIKit.h>
#protocol YourCustomViewDelegate <NSObject>
- (void)buttonTapped;
#end
#interface YourCustomView : UIView
#property (nonatomic, strong) id< YourCustomViewDelegate > delegate;
#end
And the .m file you can call buttonTapped delegate method.
- (void)myCustomClassButtonTapped:(id)sender
{
[self.delegate buttonTapped];
}
For proper work;
set your custom view delegate to self in your custom view controller.
add buttonTapped method to that view controller
And do what you want in that method. Present/Push view controllers like the other answers explained.
Edit
I will try to illustrate very simple usage of protocols, hope it will help you.
#import "MyViewController.h"
#import "YourCustomView.h"
#interface MyViewController ()<YourCustomViewDelegate> // this part is important
#end
#implementation MyViewController
- (void)viewDidLoad {
[super viewDidLoad];
YourCustomView *customView = // initialize your custom view, I suppose that you already did it
customView.delegate = self;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)buttonTapped
{
YOUR_VIEW_CONTROLLER_CLASS *viewCon =[storyboard instantiateViewControllerWithIdentifier:#"mainVC"]; //mainVC is just a example and u will have to replace it with your viewController storyboard id
//Pushing VC
[self.navigationController pushViewController:viewCon animated:YES];
}
Take a look at this
YourViewController *obj=[[YourViewController alloc]init];
UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:obj];
[[[UIApplication sharedApplication]keyWindow].rootViewController presentViewController:nav animated:YES completion:NULL];
try like this
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
UIViewController* initialView = [storyboard instantiateInitialViewController];
Firstly you need to set a storyboard Id to your ViewController, namely "mainVC". Then you could pus/present it using below code :-
YOUR_VIEW_CONTROLLER_CLASS *viewCon =[storyboard instantiateViewControllerWithIdentifier:#"mainVC"]; //mainVC is just a example and u will have to replace it with your viewController storyboard id
//Pushing VC
[self.navigationController pushViewController:viewCon animated:YES];
//OR presenting VC
[self presentViewController:viewCon animated:YES completion:nil];
Also in case if you want your another storyboard to be initiated then below,
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil]; //Change MainStoryboard with your storyboard id
hope this will help
the way i perceive your question is
->Rightnow your inside you are in UIView class and inside it there is a button by clicking it you want to push or present a ViewController and offcourse from inside your UIView class you cant push or present your view Controller. So
you can do one simple thing first inside action method make a ref(forward declaration) or you can make a whole new object of your ViewController class in which your UIView is present right now , then call a function(which exist in your ViewController) like
//function inside your uiview calss
- (void)btnaction
{
[_objCSInformationViewController pushViewController];
}
// function inside your view controller
-(void)pushViewController
{
yourViewController *objViewController = [[yourViewController alloc]initWithNibName:#"yourViewController" bundle:nil];
[strong.navigationController pushViewController:objViewController animated:YES];
}
I'm new to iOS development.
I have a ViewController ViewController with a button. When the user presses that button, I want to switch the view to RegisterViewController.
ViewController.m contains following code:
#import "ViewController.h"
#import "RegisterViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize registerViewButton;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)registerViewButtonClick:(id)sender {
NSLog(#"registerViewButtonClick called");
RegisterViewController* controller = [[RegisterViewController alloc] init];
[self.navigationController pushViewController:controller animated:YES];
}
#end
According the debug output, method registerViewButtonClick is actually called, when I press the button.
But the view represented by RegisterViewController doesn't appear.
The code of the application is available here.
What do I need to change in order for the RegisterViewController's view to become visible, when the button is pressed?
I ran your code and found that there is no navigation controller implemented in your code but you are trying to push the registerViewController. Try to present the viewcontroller like below:
[self presentViewController:controller animated:YES completion:nil];
instead of
[self.navigationController pushViewController:controller animated:YES];
The pushViewController works only when there is a UINavigationController. As per the documentation, The UINavigationController class implements a specialized view controller that manages the navigation of hierarchical content. Since, there is no UINavigationController in your code (self.navigationController is nil in this case), nothing happens when you try to push the viewController.
UINavigationController also comes handy when you want to maintain a stack of viewControllers wherein you can push or pop as per the need. This also gives you 'Back' button automatically. If your need is just to present a viewcontroller, then presentViewController: can be the right option.
If you want to present then no need of UINavigationalController.
But for pushing UINavigationalController is must .
In Storyboard, you have to add one UINavigationalController.
In Button Actions initialise the VC correctly with nib Name.
RegisterViewController* controller = [[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
[self.navigationController pushViewController:controller animated:YES];
You might need to initialize the UIViewController with the nib name..
like this
RegisterViewController* controller = [[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
RegisterViewController *news=[[RegisterViewController alloc] initWithNibName:#"RegisterViewController" bundle:nil];
[self.navigationController pushViewController:news animated:YES];
[news release];
If you are using storyboards then you need to get your view controller from the storyboard like
RegisterViewController *viewController = (RegisterViewController*)[[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil] instantiateViewControllerWithIdentifier:#"vc-identifier"];
Replace vc-identifier with whatever you have given as the identifier in storyboards and replace MainStoryboard with the name of your storybaord.
then pass it into your navigation controller like you are already doing, that is as long as your navigation controller isn't nil
[self.navigationController pushViewController:controller animated:YES];
Just been told that you aren't using storyboards, I was unable to download your link because of my location so I gave a solution with storyboards. My recommendation would be to move to using storyboards.
Will leave this here as it may help others who are having the same problem but are using storyboards