i'm having trouble with a navigation Controller, when i'm pushing my view controller to an xib a see a UITabbar but in mij xib where i'm pushing the view to i'm doing this to push the xib where i'm pushing to, to another file but when i use this line of code the UITabbar doesn't show up.
What i'm doing in view controller 1 i check if a JSON file contains 0,1 or 2 items when it's for example '1' item in the JSON i would like to push the view controller to a file special for the '2 item file' i'm pushing on this way:
UIViewController *rootController =
[[2ViewController alloc]
initWithNibName:#"2ViewController" bundle:nil];
navigationController = [[UINavigationController alloc]
initWithRootViewController:rootController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.window addSubview:navigationController.view];
[self.window makeKeyAndVisible];
But when i do that the UITabbar disappear 'under' the view controller. Could somebody help me out solving this problem please?
you set set navigationController into UITabBarController.
Like
//Add to tabbars.
NSArray* controllers = [NSArray arrayWithObjects:navigationController, nil];
myTabBarController.viewControllers = controllers;
Related
I need to set the view controller of the home screen as the the root of the navigation controller, no matter how the user reaches it (push/show or custom segue)
The following code put in the viewDidLoad of a view controller seems to have no effect with iOS 7:
[self.navigationController setViewControllers:#[self]];
The navigation stack does not change at all.
Have you ever experienced any similar issue?
Thanks,
DAN
Call your UIViewController method from app delegate like this..try it out.
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
ViewController* pp = [[ViewController alloc] init];
UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:pp];
self.window.rootViewController = nav; or [self.window setrootviewcontroller=nav];
[self.window addSubview:[nav view]];
[self.window makeKeyAndVisible];
Only one line to make your current viewController as rootviewcontroller
[[[UIApplication sharedApplication] delegate] window].rootViewController = self;
Create global reference of navigation controller in App Delegate and then with the reference of appDelegate you can change you rootView controller anywhere just type below code :
[appDelegate.navigaitonController initWithRootViewController:viewController];
Note: Here viewController is new viewcontroller reference which you want to set as root of navigation controller .
I have clean first page without UITabBarController , and UINavigationController is hidden , so when user went to second page , it will need UITabBarController with few tabs , so my question is how can i build a UITabBarController without make it rootViewController ..
in AppDelegate.m
MainViewController *mainviewController = [[MainViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:mainviewController];
[nav setNavigationBarHidden:YES];
self.window.rootViewController = nav;
in MainViewController.m after button get clicked
ShowViewController *showView = [ShowViewController new];
[self.navigationController pushViewController:showView animated:YES];
in ShowViewController.m
UIViewController *tm1 = [UIViewController new];
tm1.title = #"tm1";
tm1.view.backgroundColor = [UIColor redColor];
UIViewController *tm2 = [UIViewController new];
tm2.title = #"tm2";
UIViewController *tm3 = [UIViewController new];
tm3.title = #"tm3";
NSArray *tm = #[tm1,tm2,tm3];
UITabBarController *tabbarC = [UITabBarController new];
[tabbarC setViewControllers:tm animated:YES];
[[self navigationController] pushViewController:tabbarC animated:YES];
tabbarC didn't show .. xcode said : 2014-02-03 01:07:48.205 zhui002[45992:70b] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted.
2014-02-03 01:07:48.355 zhui002[45992:70b] Unbalanced calls to begin/end appearance transitions for .
so could anyone tell me is that possible to use UITabBarController to build what i want , or i should build it with UIButton and make it looks like tabbar ?
thx !
The error Xcode is throwing most likely means you are trying to begin an animation before the previous animation has completed. You could try setting the animation property to NO in both the pushViewController calls to avoid getting the error.
A more elegant way to do what you are trying to do is make the ShowViewController a subclass of UITabBarController and set your tabs in viewDidLoad
The answer is yes you can. Hook up your TabBarController as a segue for 2nd ViewController. It will still be a part of the navigation controller.
I've created an almost-empty UIViewController class named MyViewController. In the viewDidLoad I'm setting the title and adding a close-button to the navigationItem.leftBarButtonItem.
I'm presenting my MyViewController like this:
MyViewController *myViewController = [[MyViewController alloc] init];
UINavigationController *nc = [[UINavigationController alloc] myViewController];
nc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:nc animated:YES];
When the viewController is presented, the background of it's view is just black. How can I setup it's view to fill-out the screen with an empty view -- just like when the UIViewController is setup in a Storyboard?
I've tried adding the following to the viewDidLoad, but the view is still black:
self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
By default a VC's view gets created in -loadView which you usually neither call, nor override. It gets called automatically the first time you request the the VC's view property.
The view's size is automatically set to the 'empty space', like everything except for the status bar without a NavigationController, minus the navbar when using one etc. You shouldn't worry about its size - usually it's just fine.
You can add your own views in -viewDidLoad and remove them again (for low-memory reasons) in -viewDidUnload.
You can add an UIImageView with custom image and then sent it to back
So in your viewcontrollers viewDidLoad
UIImageView *back = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"MyBG"]];
[self.view addSubview:back];
[self.view sendSubViewToBack:back];
If you are using a XIB file you should init the view controller through the method initWithNibName: bundle:
I have 6 views in which I am placing the UISplitViewController at 4th position (i.e.the 4th view). Now when I navigate from 3rd view to 4th view (i.e. ViewController to SplitView) I want to come back to 4th view to 3rd view (i.e. SplitView to ViewController).
I am using the below code to show the UISplitViewController when I am navigating from 3rd view to 4th view.
MasterViewController *masterViewController = [[MasterViewController alloc] initWithNibName:#"MasterViewController" bundle:nil];
UINavigationController *masterNavigationController = [[UINavigationController alloc] initWithRootViewController:masterViewController];
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
UINavigationController *detailNavigationController = [[UINavigationController alloc] initWithRootViewController:detailViewController];
masterViewController.detailViewController = detailViewController;
self.splitViewController = [[UISplitViewController alloc] init];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController, detailNavigationController, nil];
AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
appDelegate.window.rootViewController = self.splitViewController;
Now I have created a toolbar in my navigation bar programmatically and placed a back button. Below is the code what I have tried to pop the view back to viewcontroller. (i.e. from SplitView to ViewController).
-(IBAction)backbtn:(UIBarButtonItem *)sender
{
// RepresentativeAccount<UISplitViewControllerDelegate> *represent = [[RepresentativeAccount alloc]initWithNibName:#"RepresentativeAccount" bundle:nil];
// //[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:2] animated:YES];
// [[self.splitViewController.viewControllers objectAtIndex:0]popToViewController:represent animated:YES];
}
Please help thanks.
Reference: View Controller Catalog for iOS
A split view controller must always be the root of any interface you
create.
In other words, you must always install the view from a UISplitViewController object as the root view of your application’s window.
The panes of your split view interface may then contain navigation
controllers, tab bar controllers, or any other type of view controller
you need to implement your interface.
Split view controllers cannot be presented modally.
So, what you are attempting is incorrect, and in fact your app may get rejected by Apple.
I've got a UITabBarController which contains a UINavigationController. Within the visible UIViewController, I'm creating a UITableView programatically as follows:
self.voucherTableView = [[UITableView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame] style:UITableViewStylePlain];
self.voucherTableView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;
However, the UITabBar is overlapping the UITableView.
When I output the height of the [[UIScreen mainScreen] applicationFrame], it returns 460.00 whereas it should be 367.00.
In Interface Builder, I'm using the 'Simulated Metrics' which automatically sets the height of the view to 367.00.
Is there something I'm missing, no matter what I try I can't see to get the 367.00 height that I need.
As a temp fix, I've set the frame of the UITableView manually, this isn't really ideal so it would be nice to work out why this isn't working:
self.voucherTableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 367) style:UITableViewStylePlain];
You should use self.view.bounds rather than [[UIScreen mainScreen] applicationFrame] as the last one returns you the whole screen frame while self.view.bounds provides you with your view bounds wich seems what you are searching for.
You should add the UINavigationController instance to the UITabBarController and then add a table view controller to the rootViewController property of the UINavigationController instance which should make your life a lot easier.
As a simple example of this, create an empty window-based application (the templates make this a lot more confusing than it really is).
Add your UIViewController/UITableViewController subclasses to the project then use this code as a guide to setting up your project. This code is in your AppDelegate class:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// create our table view controller that will display our store list
StoresViewController *storeListController = [[StoresViewController alloc] init];
// create the navigation controller that will hold our store list and detail view controllers and set the store list as the root view controller
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:storeListController];
[navController.tabBarItem setTitle:#"TableView"];
[navController.tabBarItem setImage:[UIImage imageNamed:#"cart.png"]];
// create our browser view controller
BrowserViewController *webBrowserController = [[BrowserViewController alloc] init];
[webBrowserController.tabBarItem setTitle:#"WebView"];
[webBrowserController.tabBarItem setImage:[UIImage imageNamed:#"web.png"]];
// add our view controllers to an array, which will retain them
NSArray *viewControllers = [NSArray arrayWithObjects:navController, webBrowserController, nil];
// release these since they are now retained
[navController release];
[storeListController release];
[webBrowserController release];
// add our array of controllers to the tab bar controller
UITabBarController *tabBarController = [[UITabBarController alloc] init];
[tabBarController setViewControllers:viewControllers];
// set the tab bar controller as our root view controller
[self.window setRootViewController:tabBarController];
// we can release this now since the window is retaining it
[tabBarController release];
[self.window makeKeyAndVisible];
return YES;
}
In the code sample above the BrowserViewController is a subclass of UIViewController and the StoresViewController class is a subclass of UITableViewController. The UITabBarController and UINavigationController instances are created programmatically and added to the window.
By subclassing the UITableViewController class you avoid having to create a UITableView instance programmatically and get most everything you need out of the box.
When you need to push a detail view onto the UINavigationController instance's stack, you just have use something similar to this:
[self.navigationController pushViewController:YourDetailViewControllerInstance animated:YES];
This will add the detail view UIViewController subclass to the UINavigationController instance's view hierarchy for you and animate the transition.
Lots of controllers in this, but it's totally worth it and will avoid a lot of the problems you're experiencing as this method allows the views to manage resizing and take toolbars/navigation bars into account all by themselves.