I am new to iPhone app. I was told not to use Xcode storyboard for the app to be compatible with iOS4.3 and under.
Right now, I have 2 pages showing using a tabcontroller, however I am trying to add a page that loads up first when the program is started (i.e. a Login page), after authenticated the user will land on the first page of the 2 tabs.
What would I need to do? Should I create a MainWindow.xib file?
Thanks!
James
You have (at least) two solutions. You can :
*Create the window the the didFinishLaunching function in your AppDelegate, with something like that:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
RootViewController *controller = [[RootViewController alloc] initWithNibName:#"RootViewController" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:controller];
self.navigationController.delegate = controller;
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
}
*or you can create the MainWindow.xib file with the AppDelegate and the window, and tell your app use this nib when launched. To do that :
In the .plist, enter MainWindow for the "Main nib file base name" characteristic.
Related
I have one small problem. I have iOS app in xcode and when I launch it, it comes with
TabBarController. But then, I need to go to another ViewController (there would be some
info with pictures) and after that, I need go back to main page with TabbarController, but
when I click to back button, It show up without Tabbar on the bottom... For more clear, I've made a scheme...
Click to this link to show image scheme
Can anybody slove this please? Im working without storyboards, so I need it
programmatically. Thank you for every reply!
Steve
My guess is that your window.rootViewController is actually your UINavigationController. If you want the TabBar be present in all the screens then you need to make it your window.rootViewController.
Set it in your app delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
[[NSBundle mainBundle] loadNibNamed:#"TabBarController" owner:self options:nil];
self.window.rootViewController = tbc;
return YES;
}
Create a xib with a tabcontroller, drop a navigation controller inside tab bar.
Set the Class of the Viewcontroller and the nib name.
Inside the method of the Button, needs to be like:
- (IBAction)go:(id)sender
{
Primeiro2ViewController *p2vc = [[Primeiro2ViewController alloc] initWithNibName:#"Primeiro2ViewController" bundle:nil];
p2vc.title = #"Primeiro 2";
[self.navigationController pushViewController:p2vc animated:YES];
self.navigationController.navigationBar.tintColor = [UIColor greenColor];
}
If you need a sample, I upload for you later.
I'm using xCode 4.3.2 and started a blank application.
I have a navigation controller and a simple logincontroller. I want the login controller to be my root view so it is this first thing that a user does when they login.
I'm using the following code and when I run the application it displays a black screen. I put in logging in the LoginViewController.m->ViewDidLoad and it is being run is there something im doing wrong the LoginViewController.xib is very simple it just contains a button right now that will switch to a tab view controller once I figure this out.
Thanks in advance.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
UIViewController *loginController = [[LoginViewController alloc] initWithNibName:#"LoginViewController" bundle:nil];
navigationController = [[UINavigationController alloc] initWithRootViewController:loginController];
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.window addSubview:navigationController.view];
[self.window makeKeyWindow];
return YES;
}
This is not right:
[self.window addSubview:navigationController.view];
change it to this:
self.window.rootViewController = navigationController;
I just tried to duplicate an existing iOS project. After copying over all the files, and fixing all the errors, I am simply getting a white screen when the app launches. Any ideas? I do not have any MainWindow.xib files, nor are any xib files mentioned in my plist. Here is my launch code below:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
MainMenuViewController *mainMenu = [[MainMenuViewController alloc] init];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:mainMenu];
self.window.rootViewController = navigationController;
[self.window makeKeyAndVisible];
return YES;
}
When i set a breakpoint in MainMenuViewController's viewDidLoad method, it hits it just fine. Any ideas?
I just figured it out... all of my .xib files were missing from the "Copy Bundle Resources" section of Build Phases.
MainMenuViewController *mainMenu = [[MainMenuViewController alloc] init];
Had you set view's frame of mainMenu?
I have no idea how to set up a menu based project in xcode 4.2.
Basically, the menu has 4 buttons in it each go to their own Navigation Controlled tableviews, but I'm not sure where to start with xcode 4.2.
In my previous application I have a main window that has the navigation controller in that, then there is a root view which sets up the 4 buttons and from there the tableview view controllers just get loaded into the navigation controller.
With xcode 4.2 I cannot seem to set the delegate of the main window, so I cannot figure this out.
So I am hoping someone understands what I am trying to do and can help me out or send me a example or tutorial or something. Thanks, any help would be greatly appreciated.
Here is how I setup my navigation controller and root view in the AppDelegate file. From there you can just add the buttons and so on just as before. If you mean to do it with the storyboard, it will be much easier. Let me know if I misunderstood the question though:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Override point for customization after application launch.
[self managedObjectModel];
[self managedObjectContext];
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
self.window.backgroundColor = [UIColor whiteColor];
RootViewController *controller = [[RootViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:controller];
[self.window setRootViewController:navigation];
[controller release];
[navigation release];
[self.window makeKeyAndVisible];
return YES;
}
You'll be fine with one UINavigationController. In your view with the 4 menu buttons just hide the UINavigationController.
Hide / Show UINavigationController
i have a tabBarController application and using .xib files for the interface not the storyboard
i have this code by default in the appdelegate
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[PopAdsFirstViewController alloc] initWithNibName:#"PopAdsFirstViewController" bundle:nil];
UIViewController *viewController2 = [[PopAdsSecondViewController alloc] initWithNibName:#"PopAdsSecondViewController" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
i have created a Login View and don't know how to show it before the tabBarView and hide t after a successful login.
One way would be to show it as a modalView on launch. Dismissing upon successfull login?
eg:
UIViewController myLoginViewController = [[MyLoginViewController alloc] init withNibNamed:"MyLoginViewController"]; //Or whatever you instantiation is
[myTabViewController presentModalViewController:myLoginViewController animated:YES];
And to dismiss it (Hide it)
//This should be done from the original View Controller i.e. myTabViewController preferably in a delegate called by the modal view controller.
[self dismissModalViewControllerAnimated:YES];
Documentation on modalViewControllers:
http://developer.apple.com/library/ios/#featuredarticles/ViewControllerPGforiPhoneOS/ModalViewControllers/ModalViewControllers.html
The way that I did it for one of my apps is to just add them in the correct order. Add your tabbar controller to your window, then add the login controller over the top of the tab bar. Then show your window. The user won't see anything but your login controller. Once you login, you can just remove the login controller from view.
This way is probably best if you have information you need to hide until login. The other way is to only launch the login view only. On successful login, remove the login and add the tab bar controller. Either way is fine.
Presenting modally is probably the easiest, but requires a view in place before presenting. So if the data and view under the login controller isn't that sensitive, you could consider this option.
Another way would be using LoginViewControllerDelegate in your appDelegate.h file
In your .h
#import "yourLoginViewController"
//and add LoginViewControllerDelegate
Then in your .m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
yourLoginViewController *loginView = [[yourLoginViewController alloc] initWithNibName:#"yourLoginViewController" bundle:nil];
loginView.delegate = self;
[window addSubview:loginView.view];
[window makeKeyAndVisible];
}
//add this one
- (void)loginViewControllerDidFinish:(yourLoginViewController *)loginViewController {
[window addSubview:tabBarController.view];
}