I have successfully created and implemented a custom UITabBarController with a custom UITabBar following this tutorial. It works fine until I have to hide it.
I'm not using Storyboards or IB and I have to get a reference to my existing UITabBarController which is on screen to hide a custom UIView in it. I'm trying to do it this way but it's only creating a new instance of that UITabBarController and not pointing me to the original instance I see onscreen:
SGTabBarController *tabBarController = [[SGTabBarController alloc] init];
[tabBarController hideCustomTabBar];
SGTabBarController.h
#interface SGTabBarController : UITabBarController
#property (nonatomic) int tabBarHeight;
-(void)hideCustomTabBar;
-(void)showCustomTabBar;
#end
SGTabBarController.m
-(void)hideCustomTabBar{
customTabBarView.hidden = YES;
NSLog(#"HIDDEN!!!");
}
-(void)showCustomTabBar{
customTabBarView.hidden = NO;
}
Any ideas on how to get to it? Thanks in advance!
How I am able to access a custom UITabBarController anywhere in the app.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
// Set up the Dashboard
//
_window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[_window makeKeyAndVisible];
UITabBarController *tabBarController = [[UITabBarController alloc] init];
NSMutableArray *tabBarItems = [#[] mutableCopy];
// Repeat this for any amount of ViewControllers
UITableViewController *tableViewController = [UITableViewController alloc] initWithStyle:UITableViewStylePlain];
UINavigationController *navController = [UINavigationController alloc] initWithRootViewController:tableViewController];
[tabBarItems addObject:navController];
tabBarController.viewControllers = tabBarItems;
self.window.rootViewController = tabBarController;
return YES;
}
Related
Im trying to use the MHTabBarController https://github.com/hollance/MHTabBarController
, in the example the custom view controller is added as a rootViewController in app delegate,
i want to add 3 tabs inside a standard tab bar controller's view for example MainViewController
here is my code inside viewDidLoad in MainViewController.m:
//MHTabBarController config
ListViewController *listViewController1 = [[ListViewController alloc] initWithStyle:UITableViewStylePlain];
ListViewController *listViewController2 = [[ListViewController alloc] initWithStyle:UITableViewStylePlain];
ListViewController *listViewController3 = [[ListViewController alloc] initWithStyle:UITableViewStylePlain];
listViewController1.title = #"Tab 1";
listViewController2.title = #"Tab 2";
listViewController3.title = #"Tab 3";
NSArray *viewControllers = #[listViewController1, listViewController2, listViewController3];
MHTabBarController *tabBarController = [[MHTabBarController alloc] init];
tabBarController.delegate = self;
tabBarController.viewControllers = viewControllers;
[self.view addSubview:tabBarController.view];
ive also added the in MainViewController.h
but its not working, its showing a table but not the tabs on top.
what im missing?
That code should go inside the AppDelegate.m
Something like this:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
MainViewController *mainViewController = [[MainViewController alloc] init];
mainViewController.title = #"Main Tab";
NSArray *viewControllers = #[mainViewController];
MHTabBarController *tabBarController = [[MHTabBarController alloc] init];
tabBarController.delegate = self;
tabBarController.viewControllers = viewControllers;
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
This way you're adding a the tab bar into the MainViewController, if you wanna add the same tab bar into other view controllers, just add the view controllers into the viewControllers array.
As I mentioned in the title, I want to add Navigation Controller to my application which already has a Tab Controller. So trying to do the staff something like on this page. Anyway, something is wrong. UINavigationController is looking a blank page, even if has a view and some libraries.
Let me begin from the stracht:
In my AppDelegate, I'm setting tab bar controllers like this:
#interface MYAppDelegate : UIResponder <UIApplicationDelegate>
#property (strong, nonatomic) UIWindow *window;
#property (strong, nonatomic) UITabBarController *tabBarController;
#end
And here is .m file:
#implementation MYAppDelegate
#synthesize window = _window;
#synthesize tabBarController = _tabBarController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
application.applicationSupportsShakeToEdit = YES;
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UINavigationController *viewController1 = [[[MYMainViewController alloc] init] initWithNibName: #"MYMainViewController" bundle:nil];
UIViewController *viewController2 = [[[MYPageViewController alloc] init] initWithNibName:#"MYPageViewController" bundle:nil];
UIViewController *viewController3 = [[[MYSearchViewController alloc] init] initWithNibName:#"MYSearchViewController" bundle:nil];
UIViewController *viewController4 = [[[MYPersonViewController alloc] init] initWithNibName:#"MYPersonViewController" bundle:nil];
// Initialize tabBarController and add ViewControllers
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;
}
Then, here is MYMainViewController implementaion which is a UINavigationController:
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"%#", [self navigationController]); // Logging null
}
My .xib file has a UINavigationController and and there is a view in it. Althought it, when I worked the app, there is blank page and untitled navigation bar. What am I doing wrong?
If I could see the content of my view, I want to navigate between two view controllers by using back button.
Any help or approach would be great for me.
Try to remove navigation controller from xib, so it only have view controller, then initialize navigation controller programatically:
UIViewController *tmpViewController1 = [[[YourViewController alloc] init] initWithNibName:#"YourViewController" bundle:nil];
UINavigationController *viewController1 = [[UINavigationController alloc] initWithRootViewController:tmpViewController1];
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.
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;
}