How do you switch between view controllers programatically in an effective manner?
I am currently utilising:
ViewController *viewController = [[ViewController alloc] init];
[self presentViewController:viewController animated:YES completion:nil];
However this does not display the items that I've inserted using the interface builder. Only the items I've inserted programatically.
I wish to do this, as I want to display a home button on each page.
Give your viewController identity in StoryBord
then into your code
UIViewController *documetController = [storyboard instantiateViewControllerWithIdentifier:#"MXDocumentViewController"];
[self.navigationController pushViewController:reviewListController animated:YES];
Related
I have added subview in a UIViewController and I want a new UIViewController Should be loaded on click of button.
Challenge is I am not able to use button in new UIViewController.
Code which I have write:
DetailsOfDayViewController *aViewController =[[DetailsOfDayViewController alloc] initWithNibName:#"DetailsOfDayViewController" bundle:nil];
aViewController.dateParsing = dateparsing;
[self addSubview:aViewController.view];
This will fix your issue. This is happening because your view controller is being deallocated when you don't have any strong pointers on it.
DetailsOfDayViewController *aViewController =[[DetailsOfDayViewController alloc] initWithNibName:#"DetailsOfDayViewController" bundle:nil];
aViewController.dateParsing = dateparsing;
[self addChildViewController:aViewController];
[self addSubview:aViewController.view];
Another fix will be connecting this view controller to a property:
#property(nonatomic,strong) DetailsOfDayViewController *aViewController;
And change your code like this:
self.aViewController = [[DetailsOfDayViewController alloc] initWithNibName:#"DetailsOfDayViewController" bundle:nil];
self.aViewController.dateParsing = dateparsing;
[self addSubview:self.aViewController.view];
For showing another controller you can following options
1. Add SubView
newViewControllerObj.view.frame = oldViewControllerObj(self).view.frame
[oldViewControllerObj(self).view.newViewControllerObj.view];
2. Present
[oldViewControllerObj(self) presentViewController: newViewControllerObj animated:YES completion:nil];
3. Push using Navigation (For this you already have to set navigation controller as root controller)
[oldViewControllerObj(self).navigationController pushViewController:newViewControllerObj animated:YES];
I'm new on IOS platform and after study a little about how does it works, i had one doubt about how to call a new class/view and overlay the current view when a button is pressed. In android i do:
Intent intent = new Intent(a.class, b.class);
startActivity(intent);
Searching on internet, i noticed that i have to use navigation bars to do it. I start an app with tab bar controller and putted a navigation controller. I used the code below:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Storyboard" bundle:nil];
UIViewController *myController = [storyboard instantiateViewControllerWithIdentifier:#"Dicas"];
[self.navigationController pushViewController: myController animated:YES];
and the return:
There is a way to overlay the current view? I always have to use navigation bars to call another class (use bottom e upper controllers will make my app ugly)?
To hide the navigation bar:
[[self navigationController] setNavigationBarHidden:YES animated:YES];
To hide tab bar:
yourViewController.hidesBottomBarWhenPushed = YES;
You can also call another viewController by using presentViewController function of a viewController class.
[self presentViewController: myController animated:YES completion:nil];
As you said u want to overlay your current view so not sure but You can show your view controller using model view like this
yourViewController *secView = [[YourViewController alloc] initWithNibName:#"YourViewController" bundle:nil];
[secView setModalPresentationStyle:UIModalPresentationPageSheet];//u can use different UIModalPresentationStyle
[secView setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self.navigationController presentViewController:secView animated:YES completion:nil];
Above one will show your view controller over existing view controller, once presented you need to make provision to dismiss this modal view.
Simple way to present new class or ViewController like this..
ViewController *view = [self.storyboard instantiateViewControllerWithIdentifier:#"ViewController"];
[self presentViewController:view animated:YES completion:nil];
I am using storyboards, I have one viewcontroller and on click I need to show another view controller modally. I am trying using this code
[self presentViewController:zoomV animated:YES completion:NULL];
I am coming up with a blank screen.
This is how I create
zViewController *zoomV = [[zViewController alloc] init];
[self presentViewController:zoomV animated:YES completion:NULL];
I tried researching this and some answers revolve around using storyboards and not having a rootviewcontroller associated. So what I have is in the initial scene I have a navigationController, and from there I drag to another Viewcontroller a relationship which defines it as a rootViewcontroller. Is that sufficient ? or is this irrelevant?
Since you have your zViewController in your storyboard, you should instantiate your zViewController using UIStoryboard instantiateViewControllerWithIdentifier:.
In your first view controller, instead of creating the zViewController using alloc/init do this, of course setting an identifier for your zViewController in your storyboard.
zViewController *zoomV = [self.storyboard instantiateViewControllerWithIdentifier:#"yourIdentifier"];
[self presentViewController:zoomV
animated:YES
completion:NULL];
Also you could accomplish the same using a segue and executing it directly, without the need of instantiating the zViewController, but is up to you.
As a second(small) comment, do not name classes starting with lowercase in ObjC :).
You may refer below snippet for story board:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
AddNameViewController *sfvc = [storyboard instantiateViewControllerWithIdentifier:#"AddNameViewController.m"];
[sfvc setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentViewController:sfvc animated:YES completion:nil];
I'm trying to make an app using Interface Builder (instead of Storyboard) for the first time, but I'm stuck. Is it possible to change view using a ViewController in the same XIB?
I'd like that when I tap a button, the view changes to the other ViewController present in the same XIB file. Must I call back an action? If yes, which?
If you have 2 view controllers with 2 .xib files, like this
You can present the NextViewControler from your ViewController's button press method,
-(IBAction) yourButtonPressed:(id)sender;{
NextViewController *nextViewController = [[NextViewController alloc] initWithNibName:#"NextViewController" bundle:nil];
[self presentViewController:nextViewController animated:YES completion:nil];
}
EDIT :
You can present the same viewcontroller like this.
-(IBAction) yourButtonPressed:(id)sender;{
ViewController *viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
[self presentViewController:viewController animated:YES completion:nil];
}
How can i go from a uitabbarcontroller to a viewcontroller in fullscreen, retaining all the data and views/tabs on the uitabbarcontroller?
tks
Did you want to hide the TabBar or show a new view, but once you're done with the new view have the TabBar be unaffected?
In the case of the latter try something like:
ViewController *vc = [[ViewController alloc] initWith...];
[self presentModalViewController:vc];
Add ViewController on TabBar in fullScreen then:
ViewController *vc = [[ViewController alloc] initWithNibName:#"ViewController " bundle:nil];
[self presentViewController:vc animated:YES completion:NULL];
Now dissmiss that Modal Controller like this in any event( of button may be)
[self removeFromParentViewController];
After this your tabbar will as it is: