I'm trying to determine which tab has been selected by the user. I melded this together from a couple of tutorials on iOS tab bars. In my appDelegate I have this code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
//We need to implement the view controllers within the tab controller and make the tab controller the root controller of our app - note we are only using view 1-3 at first.
FirstViewController *fistView = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
ThirdViewController *thirdView = [[ThirdViewController alloc] initWithNibName:#"ThirdViewController" bundle:nil];
FourthViewController *fourthView = [[FourthViewController alloc] initWithNibName:#"FourthViewController" bundle:nil];
NSArray *viewControllersArray = [[NSArray alloc] initWithObjects:fistView, secondView, thirdView, fourthView, nil];
self.tabController = [[UITabBarController alloc] init];
[self.tabController setViewControllers:viewControllersArray animated:YES];
self.window.rootViewController = self.tabController;
//end custom code
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
Is viewControllerArray the delegate for my tabController?
When I place this code on the page nothing happens:
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
if (tabBarController.selectedIndex == 0) {
NSLog(#"ok");
}
}
In this case, your app delegate should be the delegate for the tabBarController.
You can simply add self.tabController.delegate = self and make sure that your AppDelegate conforms to the UITabBarControllerDelegate protocol.
I also suggest placing a log outside the if in your delegate method, to confirm that it is actually called.
Related
I want to Push my viewController on PresentViewController
When i click on button initially i am loading PresentViewController, here is my code.
- (IBAction)JoinClicked:(id)sender{
JoinWithViewController *detail_view_controller = [[JoinWithViewController alloc] initWithNibName:#"JoinWithViewController" bundle:nil];
[self.view.window.rootViewController presentViewController:detail_view_controller
animated:YES
completion:NULL];
}
this works fine, but when i click on button which is there on PresentViewController on click i want to Push my view, but in does not pushes.
Please help, Thanks in advance.
JoinWithViewController *detail_view_controller = [[JoinWithViewController alloc] initWithNibName:#"JoinWithViewController" bundle:nil];
[self.navigationController pushViewController:detail_view_controller animated:YES];
Try like this to push viewController. If you use TabBar do like this in AppDelegate. If you create TabBar Drag and drop means leave that. Create TabBar Programatically like below.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UITabBarController *tabController = [[UITabBarController alloc]init];
self.viewController = [[CalculatorViewController alloc] initWithNibName:#"CalculatorViewController" bundle:nil];
UITabBarItem *tab_item1 = [[UITabBarItem alloc]init];
//tab_item1.title = #"Calculator";
tab_item1.image = [UIImage imageNamed:#"Calculator.png"];
[self.viewController setTabBarItem:tab_item1];
UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:self.viewController];
ShowPhoneViewController *phone = [[ShowPhoneViewController alloc]init];
UITabBarItem *tab_item2 = [[UITabBarItem alloc]init];
tab_item2.title = #"Latest Mobiles";
tab_item2.image = [UIImage imageNamed:#"Mobile.png"];
[phone setTabBarItem:tab_item2];
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:phone];
CurrencyConvertorViewController *currency = [[CurrencyConvertorViewController alloc]init];
UITabBarItem *tab_item3 = [[UITabBarItem alloc]init];
tab_item3.title = #"Units Convertor";
tab_item3.image = [UIImage imageNamed:#"Dollar.png"];
[currency setTabBarItem:tab_item3];
UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:currency];
SettingsPageViewController *setting = [[SettingsPageViewController alloc]init];
UITabBarItem *tab_item4 = [[UITabBarItem alloc]init];
tab_item4.title = #"Settings";
tab_item4.image = [UIImage imageNamed:#"Settings.png"];
[setting setTabBarItem:tab_item4];
UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:setting];
tabController.viewControllers = [NSArray arrayWithObjects:nav1, nav2, nav3, nav4, nil];
self.window.rootViewController = tabController;
[self.window makeKeyAndVisible];
return YES;
}
I hope you got now
pushviewcontroller is the feature of UINavigationController where you can push one viewcontroller on another vierw controller. Here you are using a single viewcontroller as a rootviewcontroller so either you must change your rootviewcontroller to UINavigationcontroller or you can use "addSubview method" to add new viewController on the current viewcontroller.
but the better option is to add uinavigationcontroller as a rootviewcontroller.
AppDelegate.m
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
FirstViewController *first = [[FirstViewController alloc]
initWithNibName:#"FirstViewController" bundle:nil];
UINavigationController *navController =[[UINavigationController alloc]
initWithRootViewController:first];
[self.window setRootViewController:navController];
}
Now when as you want to switch from FirstViewController to SecondViewController on button clicked than you have to use pushviewcontroller
FirstViewController.h
-(void) nextBtnPressed {
SecondViewController *second = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
[self.navigationController pushViewController:second animated:TRUE];
}
I create my TabBarController programatically, because I want the same Controller in every tab displaying different content. The content is fetched by an ID.
I use the storyboard id the same way as one would use initWithNibName:.
I do this in the AppDelegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:nil];
UITabBarController *tabBarController = [[UITabBarController alloc] init];
for (int i = 0; i < 7; i++) {
MyViewController *svc = [storyboard instantiateViewControllerWithIdentifier:#"MyView"];
[svc setID: i];
[tabBarController addChildViewController:svc];
}
[self.window makeKeyAndVisible];
[self.window setRootViewController: tabBarController];
return YES;
}
But the TabBar shows only 5 of the 7 Tabs. This is fine, because only 5 tabs can be visible the same time. Unfortunately the ... More button is not visible. So the last 2 tabs are not accessible.
Does anyone have an idea how to force the More button to show up, or why it does not show up?
Regards!
It's not showing up because you are adding viewcontrollers to the tab bar controller using addChildViewController method which is a UIViewController method and not a tab bar controller method. So i think what's happening is the tab bar controller doesn't really know that it has more than 5 view controllers.
If you want the more view controller to show up, set the viewControllers array of the tab bar controller directly. Modify your code to something like below:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
UITabBarController *tabBarController = [[UITabBarController alloc] init];
NSMutableArray *vcArray = [NSMutableArray array];
for (int i = 0; i < 7; i++) {
ViewController *svc = [storyboard instantiateViewControllerWithIdentifier:#"MyView"];
[svc setID: i];
[vcArray addObject:svc];
}
[tabBarController setViewControllers:vcArray]; //This is the important part.
[self.window setRootViewController: tabBarController];
[self.window makeKeyAndVisible];
Following is simple example for How can you use UITabBarController
Firsts Create all object of UIViewController and UINavigationController in AppDelegate.h file and use following method of AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window=[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds ]];
self.viewCon=[[ViewController alloc] init];
self.navCon=[[UINavigationController alloc] initWithRootViewController:self.viewCon];
self.navCon.navigationBar.tintColor=[UIColor blackColor];
self.viewCon.title=#"First View";
self.fView=[[FirstViewController alloc] init];
self.FnavCon=[[UINavigationController alloc] initWithRootViewController:self.fView];
self.FnavCon.navigationBar.tintColor=[UIColor blackColor];
self.fView.title=#"Secound View";
self.sView=[[SecoundViewController alloc] init];
self.SnavCon=[[UINavigationController alloc] initWithRootViewController:self.sView];
self.SnavCon.navigationBar.tintColor=[UIColor blackColor];
self.sView.title=#"Third View";
.
.
// create UIViewController and UINavigationController As you need
.
.
.
UIImage *img1=[UIImage imageNamed:#"Australia.gif"];
self.tbItem1=[[UITabBarItem alloc] initWithTitle:#"First Page" image:img1 tag:1];
self.viewCon.tabBarItem=self.tbItem1;
UIImage *img2=[UIImage imageNamed:#"Cameroon.gif"];
self.tbItem2=[[UITabBarItem alloc] initWithTitle:#"Secound Page" image:img2 tag:2];
self.fView.tabBarItem=self.tbItem2;
UIImage *img3=[UIImage imageNamed:#"Canada.png"];
self.tbItem3=[[UITabBarItem alloc] initWithTitle:#"Third Page" image:img3 tag:3];
self.sView.tabBarItem=self.tbItem3;
NSMutableArray *viewArr=[[NSMutableArray alloc] init];
[viewArr addObject:self.navCon];
[viewArr addObject:self.FnavCon];
[viewArr addObject:self.SnavCon];
self.tbCon=[[UITabBarController alloc] init];
self.tbCon.viewControllers=viewArr;
[self.window addSubview:tbCon.view];
[self.window makeKeyAndVisible];
return YES;
}
I'm new to UISplitView development, so I'm sure there is something obvious I'm doing wrong. I have a basic UISplitView iPad app that loads up with two UITableView controllers when the app launches. This works just fine.
What I am trying to do is immediately upon launch, presenting an "authentication" view modally so that a user will need to login before continuing. Here is the code I have so far which compiles and works without breaking, but the view is not showing.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
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];
self.splitViewController = [[UISplitViewController alloc] init];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController, detailNavigationController, nil];
masterViewController.detailViewController = detailViewController;
masterViewController.managedObjectContext = self.managedObjectContext;
self.window.rootViewController = self.splitViewController;
[self presentAuthenticate];
[self.window makeKeyAndVisible];
applicationDidLaunch = YES;
return applicationDidLaunch;
}
- (void) presentAuthenticate {
AuthenticateViewController *loginController = [[AuthenticateViewController alloc] initWithNibName:#"AuthenticateViewController" bundle:nil];
[loginController setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[loginController setModalPresentationStyle:UIModalPresentationFormSheet];
if ([self.splitViewController respondsToSelector:#selector(presentViewController:animated:completion:)]) {
[self.splitViewController presentViewController:loginController animated:NO completion:nil];
} else {
[self.splitViewController presentModalViewController:loginController animated:NO]; //iOS 4 works fine with or without animation
}
}
I defined the AuthenticateViewController as a View with a few textfields in it and have it wired to the File's Owners view.
Thanks ahead of time!
A viewcontroller will not allow to push/present on anotherview unless and until the view is complete loading.
Simple saying we are not allow to call presentModalViewController/pushViewController in a viewcontroller viewDidLoad/viewWillAppear. we need to call this in viewDidAppear.
I had the same issue you said.
Some Solution I can say are,
Do the loading of AuthenticateViewController after [self.window makeKeyAndVisible]; and in a performSelctor (may be with a delay).
Move the code to display AuthenticateViewController in SplitView's DetailView controller viewDidAppear.
thanks,
Naveen Shan
I'm building an App which is TabBar based. One of the tabs will display a TableView and I would like to have a NavigationBar at the top.
However I need to localize everything in this app to several languages so it needs to be done in code.
I have the tab bar set up in the AppDelegate;
#implementation AppDelegate
#synthesize window = _window;
#synthesize tabBarController = _tabBarController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[HomeViewController alloc] initWithNibName:#"HomeView" bundle:nil];
UIViewController *viewController2 = [[RecycleViewController alloc] initWithNibName:#"RecycleView" bundle:nil];
UIViewController *viewController3 = [[SettingsViewController alloc] initWithNibName:#"SettingsView" bundle:nil];
UIViewController *viewController4 = [[SettingsViewController alloc] initWithNibName:#"SettingsView" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2,viewController3, viewController4, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
Each of the windows has the code for the information on the tab.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
self.title = NSLocalizedString(#"Home", #"Home");
self.tabBarItem.image = [UIImage imageNamed:#"home"];
}
return self;
}
So far so good, but the RecyclingView (TableView) need a navigation bar where I can set the title using NSLocalizedString.
I would be really grateful for some help.
you need to add a UINavigationController at the second index of your tabBarController's viewControllers instead of adding a view controller -
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[HomeViewController alloc] initWithNibName:#"HomeView" bundle:nil];
UIViewController *viewController2 = [[RecycleViewController alloc] initWithNibName:#"RecycleView" bundle:nil];
UIViewController *viewController3 = [[SettingsViewController alloc] initWithNibName:#"SettingsView" bundle:nil];
UIViewController *viewController4 = [[SettingsViewController alloc] initWithNibName:#"SettingsView" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewController2];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, navController,viewController3, viewController4, nil];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
to set the title at navigation bar you can write this in your RecycleViewController's viewDidLoad
[self.navigationItem setTitle:#"title"];
You can localize the xibs with Interface Builder so you shouldn't have to do it programatically.
http://www.icanlocalize.com/site/tutorials/iphone-applications-localization-guide/
The answer for xcode 4.3.2 is:
alloc the UINavigationBar in RecycleViewController.m as this:
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self];
self.view addSubview:navController.view;
But there is a bug, that navigation bar will display a blank at the top, about 10pixels.
So here is another solution:
use xib builder, add a navigation bar from libary in the top of view RecycleViewController.xib, press ctrl+"navigation Item", point to RecycleViewController.h to insert an IBOutlet,then you will have a good looking navigation bar to show.
How to insert UINavigationController inside UITabBarController.
Currently I have main UITabBarController with declatarion inside application delegate like this (so tab is main)
self.window.rootViewController = self.tabBarController;
And inside one of tabs I want to insert UINavigationController, and can't get it.
The code is contructed like this:
MainWindow.xib with UITabBarController object with tab typed as UINavigationController (point to NavigationHistory.xib) - screenshot: invalid link
NavigationHistory.xib contains only UINavigationController where view point to History.xib
History.xib have only UITableView element - screenshot: invalid link
And now UIViewController doesn't display my View1 view, and I have no clue why it may be. Maybe you have any clue? or point me to the place where such configuration is done.
I'll answer myself. It's good explained at
https://developer.apple.com/library/ios/#documentation/WindowsViews/Conceptual/ViewControllerCatalog/Chapters/CombiningViewControllers.html
Write a code in appdelegate.m file.....
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
NSMutableArray *Mutablearray = [[NSMutableArray alloc] init];
UIViewController *1st_View = [[FirstViewController alloc] initWithNibName:#"FirstViewController_iPhone" bundle:nil];
UINavigationController *Navigation = [[UINavigationController alloc] initWithRootViewController:1st_View];
[Mutablarray addObject:Navigation];
UIViewController *2nd_View = [[SecondViewController alloc] initWithNibName:#"SecondViewController_iPhone" bundle:nil];
UINavigationController *Navigation = [[UINavigationController alloc] initWithRootViewController:2nd_View];
[Mutablearray addObject:Navigation];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = Mutablearray;
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
Add your controller object to UINavigationController, and add that navigationcontroller object to UITabBarController
UINavigationController is a subclass of UIViewController, a UITabBarController expects an array of UIViewControllers (and therefore UINavigationController ); this tells me me that I can give a UITabBarController an array of UINavigationControllers (or sublasses thereof) giving the desired interaction.
Ref : https://developer.apple.com/library/ios/documentation/UIKit/Reference/UINavigationController_Class/
https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITabBarController_Class/
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UITabBarController *tab = [[UITabBarController alloc] init];
SimpleTableViewController *tableView = [[SimpleTableViewController alloc] init];
UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:tableView];
UITabBarItem *item = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemHistory tag:0];
nav1.tabBarItem = item;
AboutViewController *about = [[AboutViewController alloc] init];
UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:about];
UITabBarItem *item2 = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFeatured tag:0];
nav2.tabBarItem = item2;
tab.viewControllers = #[nav1,nav2];
self.window.rootViewController = tab;
[self.window makeKeyAndVisible];
return YES;
}