How i can present view controller with all stack from appdelegate.
TabBarContoller is the rootviewcontoller.
I have 4 tabs on TabBarController and each of them are nav controllers.
So i need to present viewcontroller like this.
tabBar => navBar => mainViewContoller => aViewController => bViewController;
And i should be able to use to navigate back to the mainviewcontroller or navigate by tabbar.
I have a storyboard .
I tried a lot of solutions which were recommended by similar questions but it didn't help.
You should implement this through the storyboard only.
I tried sample project using appcoda.I run it successfully that.I show you the storyboard design.
It has implemented using multiple view controllers.
TabBarController * tabBar = (TabBarController *)[UIApplication sharedApplication].delegate.window.rootViewController;
if([tabBar isKindOfClass:[UITabBarController class]]){
[tabBar setSelectedIndex:0];
UINavigationController * navBar = (UINavigationController *)tabBar.selectedViewController;
UIViewController * currentVC = navBar.topViewController;
[currentVC performSegueWithIdentifier:#"notificationSegue" sender:nil];
I thought this might be helpful for all you swift'ers. I have a project setup similarly, LoginViewcontroller -> TabBarController (5 tabs) -> NavigationController for each tab -> Other ViewControllers
In storyboard, I gave my TabBarController a storyboard ID
Within AppDelegate(didFinishLaunchingWithOptions) I added
self.window = UIWindow(frame: UIScreen.main.bounds)
let storyboard = UIStoryboard.init(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(withIdentifier: "TabBarControllerID") as! UITabBarController
viewController.selectedIndex = 3
self.window?.rootViewController = viewController
self.window?.makeKeyAndVisible()
Change selectedIndex value to whatever tab you need
Related
in my project i would like to use the MMDrawerController plugin ( https://github.com/mutualmobile/MMDrawerController ) but i have a problem. In the project i'm using the storyboard so i have read this post http://pulkitgoyal.in/side-drawer-navigation-for-ios/ but the plugin doesn't works.
I have the root view controller that calls another view (the drawer) with a segue and so it use this method (as written in the guide)
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"DRAWER_SEGUE"]) {
MMDrawerController *destinationViewController = (MMDrawerController *)segue.destinationViewController;
// Instantitate and set the center view controller.
UIViewController *centerViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"FIRST_TOP_VIEW_CONTROLLER"];
[destinationViewController setCenterViewController: centerViewController];
// Instantiate and set the left drawer controller.
UIViewController *leftDrawerViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"SIDE_DRAWER_CONTROLLER"];
[destinationViewController setLeftDrawerViewController: leftDrawerViewController];
}
}
When the destionation view is loaded i see only the centerView without the Side drawer controller. Why?
Thanks in advance.
Did you tried opening the side view controller on some action on center view controller?
e.g.,
- (IBAction)menuTapped:(id)sender {
[self.mm_drawerController toggleDrawerSide:MMDrawerSideLeft animated:YES completion:nil];
}
this will open up the side drawer for you.
EDIT:
Else simply write the following code in your Center view controller's viewDidLoad,
self.mm_drawerController.openDrawerGestureModeMask = MMOpenDrawerGestureModePanningCenterView;
self.mm_drawerController.closeDrawerGestureModeMask = MMCloseDrawerGestureModePanningCenterView;
You can change the gesture mode as per your requirement.
I'm having trouble accessing my view controllers under the tab bar controller. Here is what my storyboard looks like:
View Controller A (-> Page View Controller -> View Controller C
View Controller A -> Tab Bar Controller (MyTabBarController.h/.m) -> Navigation Controller (MyNavigationController.h/.m)-> View Controller B (TabViewController.h/.m)
Tab Bar Controller (MyTabBarController.h/.m) -> View Controller D
Tab Bar Controller (MyTabBarController.h/.m) -> View Controller E
From View Controller A I have an IBAction called loginButton that is connected to the Tab Bar Controller, and currently it looks like this:
- (IBAction)loginButton:(id)sender {
MyNavigationController *localNavigationController;
UIStoryboard * storyboard = self.storyboard;
MyTabBarController *tbc = [[MyTabBarController alloc] init];
NSMutableArray *localControllersArray = [[NSMutableArray alloc] initWithCapacity:1];
TabViewController *login = [storyboard instantiateViewControllerWithIdentifier: # "TabViewController"];
localNavigationController = [[UINavigationController alloc] initWithRootViewController:login];
localNavigationController.delegate = self;
[localControllersArray addObject:localNavigationController];
tbc.viewControllers = localControllersArray;
tbc.delegate = self;
tbc.moreNavigationController.delegate = self;
tbc.selectedIndex = 0;
[self presentViewController:tbc animated:YES completion:^{
}];
}
I'm not able to get this displayed correctly. I am getting a bunch of warnings in this piece of code. and it is also not showing the different tab items in the bottom of the Tab Bar, even though I have put images/text on each tab.
So how do I display/access the view controllers inside the Tab Bar Controller correctly? (ie View Controllers C/D/E)?
The storyboard that you show in your question already contains the tab bar controller, navigation controller, and login controller properly hooked up to each other. Because of that, you shouldn't be instantiating a new tab bar controller or navigation controller in code -- they will be instantiated by the storyboard when you instantiate the tab bar controller. So, the only thing you need to do, is to give the tab bar controller in the storyboard an identifier, and do this (assume the identifier is called MyTabBarController):
- (IBAction)loginButton:(id)sender {
UITabBarController *tbc = [self.storyboard instantiateViewControllerWithIdentifier:#"MyTabBarController"];
[self presentViewController:tbc animated:YES completion:nil];
}
You wouldn't even need this code if you control drag from the "Login" button to the tab bar controller, and choose "Modal". That will create a modal segue which will present the tab bar controller with no code at all.
If you just want to select another tab from the tabBar controller then use something like this:
UITabBarController *tabBar = (UITabBarController *)self.window.rootViewController;
[tabBar setSelectedIndex:3];
Note that if the tabBar controller is the initial view controller you can grab an instance of it it the applicationDidFinishLaunching method and store it in the AppDelegate. Then you'll be able to access it like this:
MyAppDelegate *appDelegate = (MyAppDelegate *)[[UIApplication sharedApplication] delegate];
Remember to import the AppDelegate.h
I recommand you to use a Singleton shared instance to share multiple informations form multiple controllers.
It's a good design Pattern for you usage.
I'm writing samples of Design Patterns usage on cocoa (see https://github.com/leverdeterre/DesignPatterns -> Real singleton)
In my codes, I wrote it in this way
DetailView *vc = (DetailView *)[mainStoryboard instantiateViewControllerWithIdentifier:#"DetailVC"];
self.window.rootViewController = vc;
It only show that view but I don't see the navigational bar and tab bar.
What is the right way to open a specific view (inside tabbarcontroller) within storyboard when the app receive remote notifications automatically?
That's because you get only DetailView from storyboard. If you want to show it inside navigation controller you have to init this controller.
DetailView *vc = (DetailView *)[mainStoryboard instantiateViewControllerWithIdentifier:#"DetailVC"];
UINavigationController *navVC = [[UINavigationController alloc] initWithRootViewController: vc];
self.window.rootViewController = navVC;
But I think the issue is in other. You instantiate wrong view controller. You should instantiate tab bar controller or navigation controller and then only select proper tab.
I'm working on my first app. Here's what I want to accomplish:
There will be a menu with several different options. For simplicity, assume this is comprised of UIButtons with IBAction outlets and the functionality exists to pull up the menu at any time.
Each menu button, when pressed, should display a different navigation controller's content. If the user brings up the menu and makes a different selection, the navigation controller in which he is currently operating should not be affected; the newly selected navigation chain is displayed on top of the old, and through the menu, the user can go back to the view where he left off on the previous navigation chain at any time.
visual illustration (click for higher resolution):
Please note that there are 3 different navigation controllers/chains. The root view controller (which is also the menu in this simplified version) is not part of any of them. It will not suffice to instantiate one of the navigation chains anew when it has been previously instantiated, and here's why: if the user was on screen 3 of option 2 and then selects option 1 from the menu and then selects option 2 (again) from the menu, he should be looking at screen 3 of option 2--right where he left off; the view controller he was viewing when he previously left the navigation chain should be brought back to the top.
I can make a button instantiate and present a view controller from the storyboard if there is NOT a navigation controller:
- (IBAction)buttonPressed:(id)sender {
UIViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"View 2"];
[self presentViewController:controller animated:YES completion:nil];
}
However, I can't figure out how to make those two methods work with a navigation controller involved. Moreover, I'm not sure those two methods are the right choice, because I won't always want to instantiate a new view controller: when a menu button is pressed, a check should be performed to see if the view (navigation?) controller with the corresponding identifier has already been instantiated. If so, it should simply be made the top view controller.
In summary, here are my questions:
1) How should I instantiate and display a view controller that is embedded in a navigation controller, preferably using a storyboard ID? Do you use the storyboard ID of the navigation controller or of the view controller?
2) How should I check whether an instance already exists? Again, should I check for an extant navigation controller or for a view controller, and what's the best method to do so?
3) If the selected navigation chain has already been instantiated and is in the stack of view controllers somewhere, what is the best method for bringing it to the top?
Thank you!!
side note -- it would be nice to know how to paste code snippets with indentation and color formatting preserved :)
As Rob has suggested, a tab bar controller would make a good organising principle for your design.
Add a UITabBarController to your storyboard, give it a storyboard iD. Assign each of your three sets of viewControllers ( with their respective navController) to a tab item in the tabBarController.
UITabBarController
|--> UINavigationController --> VC1 ---> VC2 -->
|--> UINavigationController --> VC1 ---> VC2 -->
|--> UINavigationController --> VC1 ---> VC2 -->
In you app delegate make a strong property to hold your tab bar controller's pointer. As the tab bar controller keeps pointers to all of it's tab items, this will take care of state for each of your sets of viewControllers. You won't have to keep separate pointers for any of them, and you can get references to them via the tabBarController's viewControllers property.
#property (strong, nonatomic) UITabBarController* tabVC;
Initialise it on startup
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIStoryboard storyBoard =
[UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:nil];
self.tabVC = [storyBoard instantiateViewControllerWithIdentifier:#"tabVC"];
//hide the tab bar
for (UINavigationController* navController in self.tabVC.viewControllers)
[navController.viewControllers[0] setHidesBottomBarWhenPushed:YES];
return YES;
}
An alternative way to hide the tab bar is to check the "Hides bottom bar on push" box in the Attributes Inspector for each of the (initial) viewControllers. You don't have to do this for subsequent viewControllers, just the first one that will be seen in that tab item.
Then when you need to navigate to one of your navController groups…
- (IBAction)openTab:(UIButton*)sender {
AppDelegate* appDelegate =
(AppDelegate*)[[UIApplication sharedApplication] delegate];
if ([sender.titleLabel.text isEqualToString: #"Option 1"]) {
appDelegate.tabVC.selectedIndex = 0;
}else if ([sender.titleLabel.text isEqualToString: #"Option 2"]){
appDelegate.tabVC.selectedIndex = 1;
}else if ([sender.titleLabel.text isEqualToString: #"Option 3"]){
appDelegate.tabVC.selectedIndex = 2;
}
[self presentViewController:appDelegate.tabVC
animated:YES completion:nil];
}
(this example uses presentViewController, your app design may navigate this in other ways…)
update
If you want to do this without a tab bar controller, you can instantiate an array holding pointers to each of your nav controllers instead:
UINavigationController* ncA =
[storyboard instantiateViewControllerWithIdentifier:#"NCA"];
UINavigationController* ncB =
[storyboard instantiateViewControllerWithIdentifier:#"NCB"];
UINavigationController* ncC =
[storyboard instantiateViewControllerWithIdentifier:#"NCC"];
self.ncArray = #[ncA,ncB,ncC];
Which has the benefit of not having a tab bar to hide…
Then your selection looks like…
- (IBAction)openNav:(UIButton*)sender {
AppDelegate* appDelegate =
(AppDelegate*)[[UIApplication sharedApplication] delegate];
int idx = 0;
if ([sender.titleLabel.text isEqualToString: #"option 1"]) {
idx = 0;
}else if ([sender.titleLabel.text isEqualToString: #"option 2"]){
idx = 1;
}else if ([sender.titleLabel.text isEqualToString: #"option 3"]){
idx = 2;
}
[self presentViewController:appDelegate.ncArray[idx]
animated:YES completion:nil];
}
1 / You can instantiate a viewController in your viewDidLoad method of your main viewController, so it will be instantiate 1 time only.
Now if you want display your controller, you would better push it :
- (IBAction)buttonPressed:(id)sender {
// Declare your controller in your .h file and do :
controller = [self.storyboard instantiateViewControllerWithIdentifier:#"View 2"];
// Note you can move this line in the viewDidLoad method to be called only 1 time
// Then do not use :
// [self presentViewController:controller animated:YES completion:nil];
// Better to use :
[self.navigationController pushViewController:controller animated:YES];
}
2 / I'm not sure, but if you want to check if an instance already exist just check :
if (controller) {
// Some stuff here
} // I think this checks if controller is initiated.
3 / I know it's not a good advice but I would tell you to not worry about checking if your controller already exist, because I think it's easier to access your viewController by using the 2 lines again :
controller = [self.storyboard instantiateViewControllerWithIdentifier:#"View 2"];
[self.navigationController pushViewController:controller animated:YES];
4 / I'm not sure if colors can be used here because of a specific style sheets.
I'm not sure to really have the good answer to your question but I hope this will help you.
Hey guys i`m trying to present a modal view controller inside an application with a tab bar controller. The problem is, every time the new view is presented, it on top of my tab bar.
I need to keep my tab bar even when the view is presented. Like google maps application does with his toolbar at the bottom of the screen.
How can i do that?
Thank you
By default, a modal view controller is meant to take up the entire screen (on an iPhone/iPod, at least). Because of this, it covers whatever you have on screen at the time.
A view controller presented via modal segue is meant to live on its own. If you want to keep your Navigation and TabBar, then just use a push segue to present the new ViewController. Remember to use this kind of segue, your presenting controller needs to be part of a UINavigationController already.
Use this to push a ViewController. If it is a UINavigationController it will push its linked RootViewController by itsself.
Create a viewController to push: (Using Storyboard)
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:nil];
UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:#"LoginViewController"];
or (Using Code/Nibs)
LoginViewController *viewController = [[LoginViewController alloc] init]; //initWithNibNamed in case you are using nibs.
//in case you want to start a new Navigation: UINavigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
and push with:
[self.navigationController pushViewController:vc animated:true];
Also, if you are using Storyboards for the segues you can use this to do all the stuff. Remember to set the segue identifier.
[self performSegueWithIdentifier:#"pushLoginViewController" sender:self]; //Segue needs to exist and to be linked with the performing controller. Only use this if you need to trigger the segue with coder rather than an interface object.
- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"pushLiftDetail"]) {
[[segue.destinationViewController someMethod:]];
segue.destinationViewController.someProperty = x;
}
}
I think you'll need to add a UITabBar to the modal view and implement/duplicate the buttons and functionality that your main bar has. The essence of a modal window is it has total control until it is dismissed.
You might try putting your UITabBarController into a NavBarController, but I'm not certain that this will work.
UITabBarController -> NavBarController -> Modal View