When I use CTRL+Click on next view it don't use the IBAction but goes straight to the next view.
How can I make the app use the IBAction first and then go to the next view.
The IBAction add data to the database, in the next screen I want to add some more data, I know how that works but can't go to the next screen and add the data...
Sorry for the messy description but hope you understand
If I understand your question correctly you want to do something on button-click, then perform a segue.
Make a general segue from your viewcontroller, not from the button.
Connect IBAction like normal.
In your IBAction method - use self.performSegueWithIdentifier("MyIdentifier")
As per my understanding if you can go to next view on button action using below code..
First go to Identity Inspector --> give Storyboard ID to Next View that you want to go..
-(IBAction)buttonAction:(id)sender{
[self.navigationController pushViewController:[self.storyboard instantiateViewControllerWithIdentifier:#"storyBoardIdentifier"] animated:YES];
}
Hope it helps you..
Related
I can't find an answer to this seemingly basic question. Let's say I have a storyboard with two view controllers A and B and a segue transition from one to another. Now, I created a different view controller C and now would like to redirect the existing segue from A to C.
I Ctrl dragged it, command dragged it, etc. it does not seem to work. In the real app, I have way too many segues to try to re-create them from scratch. Is there an easier way?
This question is not a duplicate as flagged since I'm trying to reuse existing segue, not direct to a different controller.
Thanks!
Option 1,using XML file
First,right click the Storyboard file.Then select open as Source
Code
Search segue,then change the destination id
<segue destination="Esd-4c-JQq" kind="show" id="Jnu-RW-1O5"/>
Option 2,using Interface Builder
First, selected the segue source ViewController
Second,Create a same segue(Control+drag),like picture shows
Now,you have two same segue,
You just need to delete the old one
You can drag segue from ViewController icon at the top of ViewController to other Controllers.
Just give identifier to segue by clicking segue pointer on storyboard and then opening attribute inspector and finally you have to do just that code.
Case 1: Push Segue to B from A
[self performSegueWithIdentifier:#"PushB" sender:self]; //PushB is segue identifier
Case 2: Push Segue to C from A
[self performSegueWithIdentifier:#"PushC" sender:self];
Note : You must have Navigation Controller as initial point of storyboard before performing performSegueWithIdentifier.
Hope this will help.
Delete the previous one from A to B and then recreate new one from A to C.
Hope it helps.
I am trying to write an app using UINavigationViewController. My first screen has several buttons on it, and on the click of each button, I want to segue to a UIViewController. I know that I can add a segue on each button, all pointed to the UIViewController that I want to go to, but I was wondering if it is possible to use only one segue that can be fired from each of the buttons.
If that is not possible, I was wondering if it was possible to open the second UIViewController from the first one, on button click, and provide a Back button like the UINavigationView provides. I did manage to get everything on this idea working, except for the back button. I mean I can put a standard button somewhere on the screen and go back, but I'd like the standard back button on the UINavigationView.
Phew! I'm not sure if that makes any sense.
I know that I could also use a tableview, but I'm trying to set this up with buttons.
Thanks
Edit: Thank you to everyone that answered. I now have this working. I would vote up the answers, but I don't have enough posts to do it. I appreciate the answers!
If you need to have separate action functions for each button, suggest that you segue from the main controller to the other controller and create a segue identifier (see xcode procedure below); then, use performSegueWithIdentifier from each of the button action functions. You can also take advantage of the prepareForSegue. To create the segue, control-drag from the left button in the controller in the storyboard to the controller you want to segue to and pick show.
Check the example code in swift that I did for a very similar problem in the SO reference
Linking View Controllers through button
You can embed the main controller in a navigation controller and that will give you the ability to navigate back. If you have multiple layers you can also use unwind segue.
Link each button to one single action (ex. buttonClick) in that ViewController and then perform the appropriate segue using pushViewController method on self.navigationController
-(IBAction)buttonClick:(id)sender {
if(sender.id == self.button1) {
DestinationViewController *vc = [[UIStoryboard storyboardWithName:#"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:#"VC_IDENTIFIER"];
[self.navigationController pushViewController:vc animated:YES];
}
Or if you already have that 1 segue defined in storyboards you can use
[self performSegueWithIdentifier:#"SegueIdentifier" sender:self];
And use that inside the buttonClick method. Using the 1st example, or the second one as long as the segue you setup in the storyboards is a push then you should already get the back button as that is the default behavior for pushing view controllers onto the navigation stack.
I've got a two View Controllers, when user press a button on the first one - app segue to the second one. But problem is that I need to use custom animation of segue. There is array of images, that must be animated before segue.
I guess that I need to create child-class myStoryboardSegue and override some method, but I don't even know which one.
Hope you can help me to understand.
I am trying to segue back to a home screen and pop everything from the stack (of views?)
I am using UINavigationController:
[self.navigationController popToRootViewControllerAnimated:YES];
Where shall I call this method? I have tried in -(void) prepareForSegue which does not work.
Basically I want to make sure when I go back to home screen there is no back button on the left of the title.
Home screen here refers to the welcome screen of my App.
I am not sure which part of my code shall be posted. Please comment if you need to see my code.
Thank you in advance.
Assuming you're using a Storyboard, and a UIButton declared over there is the one that triggers that action you wanna perform, you should declare an IBAction: -(IBAction)buttonPressed:(id)sender; in the .h and implement it in the .m. Inside that method should appear that [self.navigationController popToRootViewControllerAnimated:YES]; code. Also remember to attach that action to that UIButton when touch up inside in the storyboard.
Hope it helped!
I think your confusion is around the concepts of what a segue is and how it relates to the navigation controller stack. The stack is exactly the same as the basic data structure stack (http://en.m.wikipedia.org/wiki/Stack_(abstract_data_type)) in that it's a last-in-first-out store. When you segue, you're normally adding to that stack, e.g. Pushing a new VC onto the stack. A back button in most cases would not be doing that. It would be popping, or removing from the stack. Which is why you probably wouldn't call pop methods from the prepareForSegue method. Instead try calling it at some other point, like when they tap the back button, or after some action has taken place.
After struggling for days on firing a segue conditionally, I managed to solve it thanks to Simon's answer here. Please take a moment to have a look or you might not understand what I'm talking about below. I didn't copy paste his answer because he's already explained it nicely over there.
Now I've faced a new question. What if I have multiple View Controllers that I want to segue to from one View Controller?
To explain it further : Say I have one MainViewController with 2 buttons. When clicked upon each button, it should segue to their respective View Controller. First button to FirstViewController and the second button to SecondViewController.
The method described in Simon's answer can be used when you segue from one View Controller to another View Controller. Since in that method, you tie the segue to the View Controller itsrlf and not to the button, you have only one segue with an identifier for that particular View Controller. Therefore I cannot distinguish between the button taps separately.
Is there a workaround to solve this problem?
Thank you.
It might be bit premature to say this but I guess you should look into Segue more deeply.
Yes you can perform segure from button. Just control click the button and drag the cursor to view controller you want it SEGUE'd. And from my understanding only condition there is each button tap results a segue to a fixed view. There is no condition there.
Also, you can push the navigation controller manually by
YourViewController *destViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"YourDestinationViewId"];
[self.navigationController pushViewController:destViewController animated:YES];
UPDATE:
prepareForSegue is too late to stop a segue from proceeding. Yes you can create multiple segues from your view to other view controllers. And in this case you have to do so. Don't reate a segue from button, just define a IBACtion on the button click you can do the validation from there,
if(validationSuccess) {
[self performSegueWithIdentifier:#"segue1" sender:self];
}
if you are using ios6
- (BOOL)shouldPerformSegueWithIdentifier:(NSString *)identifier sender:(id)sender
return YES on validation success and NO on failure to stop it from proceeding.
I suggest you look a bit at reworking your code logic.
If I understand correctly, you have a VC (embedded in a Nav. Controller) with 2 buttons and you have figured out how to segue each button to a different VC.
Your problem is you want to make sure that even if one of the buttons are pressed, a validation is done before an action takes place. I would advise this is bad User Interface design because the user has the illusion that this button might do something and then they click it and nothing happens.
UIButton can be connected to IBActions (to initiate actions) and IBOutlets (to set their properties). If this is a button created in IB directly, I would connect it to your class as an Outlet property:
#property (nonatomic,weak) IBOutlet UIButton* myButton;
And then set its enabled value:
self.myButton.enabled=NO;
This will keep the button and dim it. This is much better UI design and the user knows they should not press the button because some condition is not satisfied.
I would rework the code so that you set this value as disabled by default for example and enable it appropriately in your code whenever your "condition" is satisfied.
Obviously if this button is created programmatically (in your code without IB) then it is easy to just use the second command above.
Hope this helps.
I just wrote another way to call multiple detail views from a single table. Each cell could essentially make a different view be displayed. The code is similar to what you see in this post but you essentially use identifiers and attributes on the list item to determine which view to show.
https://codebylarry.com/2016/07/15/multiple-detail-views-in-swift/
override func tableView(tableView: UITableView,didSelectRowAtIndexPath indexPath: NSIndexPath) {
if indexPath.row == 1 {
self.performSegueWithIdentifier("secondView", sender: self)
} else {
self.performSegueWithIdentifier(“others", sender: self)
}
}