Can anybody please tell me why my 'Done' bar button isn't dimissing my view i'm trying to edit the data from the table view?Here is the link of my code:
https://www.dropbox.com/s/gylo67z2n00yc9i/TableView.zip?dl=0
I want to know the reason.I can't figure out what i have missed out.
1.add following method in checkListViewController.
-(IBAction)unwindTocheckListViewController:(UIStoryboardSegue *)segue {
}
select Storyboard and select Add Item View Controller Scene.
Press ctrl on your Mac, select Done button and drag(pressing ctrl) to Exit.
A pop up opens up with above method name. Select it.
Repeat same for Cancel button.
You done!!!
Read upon UnwindToSegue. where your codes goes etc.
Hope this helps.
-(IBAction)unwindTocheckListViewController:(UIStoryboardSegue *)segue
{
SourceViewController *source = [segue sourceViewController];
/*
values of properties declared in .h file of your source ViewController
(called rightly SourceViewController) can be passed to
viewController you coming back to(Unwinding to).
*/
}
here source is your View controller where Done button is, this helps to bring your input from source to destination view controller.
Related
I have a split view controller with master view being something like a menu allowing users to pick the scene for detail view (I have multiple detail views). On one of the detailView scene, I have a button that presents a view controller modally and "Over Current Context" as it has a translucent background and I wanted to create that fog effect. This particular detailView (lets call it TodayViewController) is also the initial detail view controller when the app loads, and only changes when user selects a new view controller from the master view (menu).
This is what I meant in code:
When app just starts:
splitViewController.viewControllers[1] // returns TodayViewController
When user selects from the menu:
splitViewController.viewControllers[1] // returns a different view controller
So the issue I am having is that when the app just starts (bullet 1), when I present a child view controller of TodayViewController modally and "over current context", the child VC presents itself over both the master view (menu) as well as the detail view (TodayViewController), causing the entire screen to have a foggy effect. This is the effect that I want
However when I select another view controller (from the menu) and then select back TodayViewController and try to present the child VC it only presents itself over the detail view now. Meaning that the foggy effect is only present on the detail view and the master view (the menu again) remains clear. How do I fix this?
I hope I'm clear enough with my explanation. Here are some of my code:
My GlobalSplitViewController.swift:
import UIKit
class GlobalSplitViewController: UISplitViewController, UISplitViewControllerDelegate {
func primaryViewControllerForCollapsingSplitViewController(splitViewController: UISplitViewController) -> UIViewController? {
let detailViewController = self.viewControllers[1] as! TodayViewController
return detailViewController
}
func splitViewController(splitViewController: UISplitViewController, collapseSecondaryViewController secondaryViewController: UIViewController, ontoPrimaryViewController primaryViewController: UIViewController) -> Bool {
return true
}
func splitViewController(svc: UISplitViewController, shouldHideViewController vc: UIViewController, inOrientation orientation: UIInterfaceOrientation) -> Bool {
return false
}
}
GlobalSplitViewController is structured so that TodayViewController is presented first on iPhones, but on iPad it shows both master and detail view, uncollapsed.
'Over current context' is supposed to present over only the master or the detail wherever it is called from. I'm not sure why it doesn't work properly at first (but I understand that's what you want) but then works when you select another option. Anyhow, to achieve what you want, stop using 'over current context'. That will present the fog vc over the whole screen.
I have two View Controllers. First one have sendbutton that segue to second view controller. Action Segue is Show. Each time click the button, new window pops up again. I don't want create new window again, and I just want to only one second View Controller.
And my FirstViewController.m :
- (void)prepareForSegue:(NSStoryboardSegue*)segue sender:(id)sender{
SecondViewController *destinationScene = [segue destinationController];
destinationScene.receivedString = _nextOne.stringValue;
}
SecondViewController.m :
- (void)viewWillAppear{
if(_myMutableArray == nil) _myMutableArray = [NSMutableArray array];
[_myMutableArray addObject:_receivedString];
}
What I want to is send a string in the first View Controller's TextField repeatedly to next View Controller. And keep using only one second window that created at first time.
See my Storyboard
You can do this in IB without any code. Update the Presentation attribute for the view controller in the destination view from Multiple to Single:
https://stackoverflow.com/a/36104388/287963
Don't set up the segue to happen automatically. Create an IBAction for the button, test whether your second view controller is already on the screen, and either segue or not depending on whether it already exists.
I have the following code:
#IBAction func mybuttonclick(sender: UIButton) {
if(sender.titleLabel?.text == "Start"){
sender.titleLabel?.text = "Change"
}
else {
sender.titleLabel?.text = "Start"
}
}
When I click the button, I see "Change" flash and then it goes back to "Start". This is a simple new test app. The above is the only code I have in the app. Why does the button text change back to "Start" instead of remaining on "Change"?
Its very hard to answer this question without more information, but I think it's possible you have the action bound twice in Interface Builder. Where the action is being fired twice each time you hit the button. Another possibility is you have the button inside a table or collection view cell where the cell is being reused and replacing your previously edited button.
I have an initial view controller. It goes to the next view controller which has the “picker wheel” in it. From that screen, if the user selects one of the 4 items in the picker wheel and stops on it. Then press ONE action button to initiate several C code statements.
I need specific help with coding the statement (s) that cause the transition from one view controller to another view controller.
I’m thinking out loud, it should look something like this (but I really don’t know):
‘If row = 0 then go to View controller B.’
‘If row = 1 then go to View controller C’
etc.
Or use some other ‘VERY SIMPLE’ method for transitioning from a ‘selection from a picker wheel to another view controller’.
Basic documentation.
I have 4 viewcontrollers :
First view controller is named - VCa
Second view controller is named - VC1
Third View controller is named - VCb
Forth view controller is named - Vcc
There is nothing but the default 'Storyboard" coding in this VCa (view controller).
The first view controller only has a label named VCa , so we can see which VC this is.
And it has a button named Button A, so I can do a modal segue to the next view controller named VC1.
The second view controller (VC1) only has some basic things.
The picker wheel named pickerView1. The array named Companies with data.
A button to go back to the first view controller VCa.
The button is named B1Back.
A button to go forward to the next view controller named VCb.
The pupose for this button is only for demo. purposes to transition to VCb.
It has nothing to do with coding a solution to allow the picker wheel selection to . transition somehow to the next view controller.
The button is named B1forwardtob.
The same is true for the 3rd button. It just allows this VC (VCa) to transition to . . another view controller named VCc. The button is named B1forwardtoc.
An ACTION button that does nothing, yet. I’m hoping the transition from view controller to view controller code goes here (after the action button). But again I don’t know what I don’t know.
There is nothing but the default 'Storyboard" coding in this VCb (view controller).
The third viewcontroller (VCb) is very simple too. It is there just to go to and then go back to VC1.
There is nothing but the default 'Storyboard" coding in this VCc (view controller).
Same for the forth viewcontroller (VCc). It is there just to go to and then go backto VC1.
It's sort of hard to tell what you're asking, but are you looking for something like this?
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row
inComponent:(NSInteger)component
{
UIViewController *viewControllerToDisplay;
if (row == 0) {
viewControllerToDisplay = [[ViewControllerB alloc] init];
} else if (row == 1) {
viewControllerToDisplay = [[ViewControllerC alloc] init];
}
if (viewControllerToDisplay) {
[self presentViewController:viewControllerToDisplay animated:YES completion:nil];
}
}
First of all, let me say I'm an absolute beginner, so please forgive me if this is a stupid questions to be asking. And let me just add that I've spent hours/days trying to figure out how to solve this problem - including extensive searches on stackoverflow (maybe the answer is somewhere and I just don't now exactly what to search for :)...
But, let's continue: I have a small (?) problem with an Xcode storyboard project. Basically my project looks like this:
Navigation Controller -> View Controller 0 -> Tab Bar Controller -< View Controller 1, View Controller 2, View Controller 3.
When the user pushes 'button #2' in the View Controller 0, I'd like him/her to jump directly to 'View Controller 2'.
Would that be possible at all, and if so what code should use and excatly where should I put it.
Hope someone out there will help a newbie out :)
Regards,
Ulrik
Yes it is possible. You may show any view controller from any other.
You should simply add a segue from button #2 to View Controller 2. (I assume you have all your controllers in single storyboard)
Update: the above solution will show you View Controller 2 itself without tab bar controller.
Hard to tell in details without seeing the actual code. For more details you may refer to these documents:
View Controller Basics (especially part "Storyboards Help You Design Your User Interface")
Presenting View Controllers from Other View Controllers
Using View Controllers in Your App
Probably you'll come up with more concrete question.
Update
If you want to preselect desired view controller inside tabbar controller you may use the following code sketch. Here you can programmatically initiate a segue and do the desired pre-initialization inside prepareForSegue:sender: method.
static NSString * const kShowTabSegueID = #"ShowTab";
#interface ViewController ()
- (IBAction)buttonOnePressed;
- (IBAction)buttonTwoPressed;
- (IBAction)buttonThreePressed;
#end
#implementation ViewController
- (IBAction)buttonOnePressed
{
[self performSegueWithIdentifier:kShowTabSegueID
sender:#0];
}
- (IBAction)buttonTwoPressed
{
[self performSegueWithIdentifier:kShowTabSegueID
sender:#1];
}
- (IBAction)buttonThreePressed
{
[self performSegueWithIdentifier:kShowTabSegueID
sender:#2];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue
sender:(id)sender
{
if ([segue.identifier isEqual:kShowTabSegueID]) {
NSNumber *indexToShow = sender;
UITabBarController *tabBar = segue.destinationViewController;
[tabBar setSelectedIndex:indexToShow.unsignedIntegerValue];
}
}
#end
If you are simply trying to programatically switch tabs, its as simple as:
[self.tabBarController setSelectedIndex:1];
If I am understanding your flow correctly, from ViewController0 you would present ViewController1(that has a UITabBarController). In the viewWillAppear: set the selectedIndex for the tab controller (code above) to index 1, which would be ViewController2.
EDIT
After looking at your project, add this code to your BrainBreaksViewController.m
- (void)viewWillAppear:(BOOL)animated
{
[self.tabBarController setSelectedIndex:1];
}
I added this, and it switches to the 2nd tab after pressing "Press this button to goto tab #1". Follow Max Ks answer if you would like to be able to have a button to open each specific tab.
So if I understand correctly you have a view controller outside the tabbar controller and you want to navigate to the second tab in the tabbar controller from that (outside)view controller, if that is the problem then, this is my solution and I hope it helps someone as I spent some time on this issue myself.
First connect the (outside)Viewcontroller 0 to the tabbar controller in the storyboard with modal segue and give it identifier - "showTabBar" (not as one of the tabs just a modal segue).
Then:
in Viewcontroller 0 declare:
var tabBarIndex: Int?
//function that will trigger the **MODAL** segue
private func loadTabBarController(atIndex: Int){
self.tabBarIndex = atIndex
self.performSegue(withIdentifier: "showTabBar", sender: self)
}
//in here you set the index of the destination tab and you are done
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "showTabBar" {
let tabbarController = segue.destination as! UITabBarController
tabbarController.selectedIndex = self.tabBarIndex!
}
}
then you can navigate to ViewController 2 like that(don't forget it is 0 indexed):
self.loadTabBarController(atIndex: 1)
This is tested and working as of the day I am posting this answer using
Swift 3.0.2 / Xcode 8.2.1