I have a problem, with this code :
http://pastebin.com/4D6hmAQh
The title bar appears successfully (with the title aFaire) but the tab bar doesn't appear.
How to make the tab bar appear, programmatically?
You have overridden the loadView method of the RootViewController and you don't call the [super loadView] statement. However, the UITabBarController needs to initializes its tabBar through the loadView method. So you have to call [super loadView].
- (void)loadView {
[super loadView];
// self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
self.title = #"aFaire";
NSMutableArray *localViewControllersArray = [[NSMutableArray alloc] initWithCapacity:3];
FirstViewController *firstViewController = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
firstViewController.tabBarItem.title = #"First";
[localViewControllersArray addObject:firstViewController];
self.viewControllers = localViewControllersArray;
self.view.autoresizingMask = (UIViewAutoresizingFlexibleHeight);
}
Related
I'm having trouble trying to pop a view
App Delegate
#implementation MAAppDelegate
#synthesize navController;
#synthesize detailViewController;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Init the navController for the Master Detail View of the grade cells
UINavigationController *navController = [[UINavigationController alloc] init];
detailViewController = [[UIViewController alloc] init]; //step6
navController = [[UINavigationController alloc] initWithRootViewController:[[MAController alloc] init]]; //step7
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor = [UIColor whiteColor];
self.window.rootViewController = navController; //step8
[self.window makeKeyAndVisible];
// Set MAController as rootViewController
//self.window.rootViewController = [[MAController alloc] init];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
// Use the insanely cool TSMessages to show network alerts
[TSMessage setDefaultViewController: self.window.rootViewController];
return YES;
}
First part of viewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self.navigationController setNavigationBarHidden:YES];
UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle:#"Home" style:UIBarButtonItemStyleBordered target:self action:#selector(home:)];
self.navigationItem.leftBarButtonItem=newBackButton;
Later, when I change the viewController
NSLog(#"Opened progress report");
UIViewController *detailViewControl = [[UIViewController alloc] init];
// Set progress report as the view controller
[self.navigationController pushViewController:detailViewControl animated:YES];
UIImage *background = [UIImage imageNamed:#"bg"];
// Add static image bg
self.backgroundImageView = [[UIImageView alloc] initWithImage:background];
self.backgroundImageView.contentMode = UIViewContentModeScaleAspectFill;
[self.view addSubview:self.backgroundImageView];
// Add blurred layer to image when tableView goes in front of it
self.blurredImageView = [[UIImageView alloc] init];
self.blurredImageView.contentMode = UIViewContentModeScaleAspectFill;
self.blurredImageView.alpha = 0;
[self.blurredImageView setImageToBlur:background blurRadius:10 completionBlock:nil];
[self.view addSubview:self.blurredImageView];
[self.navigationController setNavigationBarHidden:NO];
So I don't understand why that when I do this, a selector from the button (that I know fires, because I get Righthtere in my log):
-(void)home:(UIBarButtonItem *)sender {
NSLog(#"Righthtere");
// Set progress report as the view controller
[self.navigationController popToViewController:self animated:YES];
}
It doesn't go back to the initial view controller.
You seem to be confusing popToViewController and popViewControllerAnimated. popViewControllerAnimated removes the current view from the stack and brings the new stack top the active view controller. popToViewController pops the stack until the listed view controller is on top of the stack.
Since you are calling popToViewController with self, it will look and see that the requested view controller is already on top of the stack and do nothing. If you wish to go back one view controller then your call should be.
[self.navigationController popViewControllerAnimated:YES];
I use the below code to pop the previous viewcontroller in iOS 8.
[self presentModalViewController:viewcontroller animated:YES];
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.
i have been working on this issue for some time now and cannot find a solution to my problem.
i have a tabbar view controller that i have tried to customise with images, i have the custom graphics working however i need to use code to display and init the tabbar's view controllers. i also have a problem with displaying a navigation bar at the top of one of my tabs which i think is connected to how i am initiating the tab view controllers
the storyboard shows that there should be a navigation bar at the top of the medication tab and that the view is connected to the tab bar via a segue
you can see i have tried to use storyboard segues to link my view controllers to the tab bar controller. i have the following code in the MedicationViewController.m
/
// MedicationViewController.m
// fibromapp
//
// Created by jamie mcallister on 08/09/2013.
// Copyright (c) 2013 Jamie McAllister. All rights reserved.
//
#import "MedicationViewController.h"
#import "TakenViewController.h"
#import "MedsListViewController.h"
#import "MedsAlarmViewController.h"
#interface MedicationViewController ()
#end
#implementation MedicationViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
TakenViewController *viewController2 = [[TakenViewController alloc] init];
MedsListViewController *viewController1 = [[MedsListViewController alloc] init];
MedsAlarmViewController *viewController3 = [[MedsAlarmViewController alloc] init];
self.viewControllers = [NSArray arrayWithObjects:viewController1,
viewController2,
viewController3,nil];
UITabBarItem *tab1 = [[UITabBarItem alloc] initWithTitle:#"Medication" image:[UIImage imageNamed:NULL] tag:1];
UITabBarItem *tab2 = [[UITabBarItem alloc] initWithTitle:#"Taken" image:[UIImage imageNamed:NULL] tag:2];
UITabBarItem *tab3 = [[UITabBarItem alloc] initWithTitle:#"Alarms" image:[UIImage imageNamed:NULL] tag:3];
UIImage* sel = [UIImage imageNamed:#"fmtabSel"];
[viewController1 setTabBarItem:tab1];
[viewController2 setTabBarItem:tab2];
[viewController3 setTabBarItem:tab3];
UIImage* tabBarBackground = [UIImage imageNamed:#"fmtab.png"];
UITabBar *tabBar = self.tabBar;
[tabBar setBackgroundImage:tabBarBackground];
[tabBar setSelectionIndicatorImage:sel];
}
return self;
}
- (void)viewDidLoad
{
UITabBar *tabbar = self.tabBar;
NSLog(#"%f %f", tabbar.frame.size.width, tabbar.frame.size.height);//used to find the size of the bar
[super viewDidLoad];
UIImage* tabBarBackground = [UIImage imageNamed:#"fmtab.png"];
UIImage* sel = [UIImage imageNamed:#"fmtabSel"];
UITabBar *tabBar = self.tabBar;
[tabBar setBackgroundImage:tabBarBackground];
[tabBar setSelectionIndicatorImage:sel];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
with this code i get the tab but there is no navigation bar at the top of this tab.
can anybody suggest what i must do to resolve this?
if you require any more information feel free to ask and i will edit it into the bottom of this question.
thanks in advance :)
To have a Navigation bar, you have to put a UINavigationController between the tabbar controller and the first UIViewController.
All can be done in storyboard without needs of writing a line of code.
If you want the navigation bar to be at the top You should fill your tabbar controller with navigation controllers inited with root controllers, not just plain controllers.
Smth like that:
TakenViewController *viewController2 = [[TakenViewController alloc] init];
MedsListViewController *viewController1 = [[MedsListViewController alloc] init];
MedsAlarmViewController *viewController3 = [[MedsAlarmViewController alloc] init];
UINavigationController * nc1 = [[UINavigationController alloc] initWithRootViewController:viewController1];
UINavigationController * nc2 = [[UINavigationController alloc] initWithRootViewController:viewController2];
UINavigationController * nc3 = [[UINavigationController alloc] initWithRootViewController:viewController3];
self.viewControllers = [NSArray arrayWithObjects:nc1,
nc2,
nc3,nil];
I want to create a UIView for a UITabBarController
Here is my code for the .h file :
#interface TE : UIViewController <UITabBarControllerDelegate>{
UITabBarController *tabBarController;
}
#property (nonatomic,retain) UITabBarController *tabBarController;
#end
The viewDidLoad method:
UIViewController *testVC = [[T1 alloc] init];
UIViewController *otherVC = [[T2 alloc] init];
NSMutableArray *topLevelControllers = [[NSMutableArray alloc] init];
[topLevelControllers addObject: testVC];
[topLevelControllers addObject: otherVC];
tabBarController = [[UITabBarController alloc] init];
tabBarController.delegate = self;
[tabBarController setViewControllers:topLevelControllers animated:NO];
tabBarController.selectedIndex = 0;
self.view = tabBarController.view;
This creates the tab bar controller, but when I click on a tab bar item, I get an error:
Thread1:Program receive signal: SIGABRT
Edit: I solved the problem by downloading and modifying the version of http://www.iphonedevcentral.com/create-uitabbarcontroller/
You say above that you don't want to create the tabBarController in the appDelegate. Why not? Where else would you create it? The tabBarController has to be the root view controller and cannot be a child of any other view controller.
Btw, make sure you implement:
- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController {
NSUInteger tabIndex = [tabBarController.viewControllers indexOfObject:viewController];
if (viewController == [tabBarController.viewControllers objectAtIndex:tabIndex] ) {
return YES;
}
return NO;
}
Subclass UITabBarController
Override the - (void) loadView method and include the following code
MyCustomViewControllerOne* ctrl1 = [[[MyCustomViewControllerOne alloc] initWithNibName#"MyViewControllerOne" bundle: nil] autorelease];
UIViewController* ctrl2 = [[[UIViewController alloc] init] autorelease];
MyCustomControllerTwo* ctrl3 = [[[UIViewController alloc] initWithObject: myObj] autorelease];
ctrl1.title = #"First tab";
ctrl2.title = #"Second tab";
ctrl3.title = #"Third tab";
ctrl1.tabBarItem.image = [UIImage imageNamed:#"tab_image1.png"];
ctrl2.tabBarItem.image = [UIImage imageNamed:#"tab_image2.png"];
ctrl3.tabBarItem.image = [UIImage imageNamed:#"tab_image3.png"];
[self setViewControllers: #[ctrl1, ctrl2, ctrl3]];
That's pretty much it.
Change self.view = tabBarController.view; to
[self.view addSubview:tabBarController.view]; And it works correctly
Trying changing
self.view = tabBarController.view;
to
[self.view addSubview:tabBarController.view];
See if that helps.
Also try placing this in your -(void)loadView method
- (void)loadView {
UIView *mv = [[UIView alloc] initWithFrame:CGRectMake(0.0, 100.0, 320.0, 480.0)];
self.view = mv;
[mv release];
}
The reason you probably are experiencing a black screen is because you haven't initialized your UIView properly.
#Mehdi, just make your TE a UITabBarController instead of a UIViewController which then has a TabBarController in it. Makes it all the more easy to manage your TabBarController. To respond to some others who have indicated that you can have only one TabBarController as the window's rootViewController. That is not the case. A UITabBarController can be instantiated in multiple places where you need a second level menu navigation. Have a TabBar within a TabBar would not make sense, but having a left Navigation Menu and then having a TabBar on each menu item would make sense.
I'm a newbie to the xCode world and I had a few questions regarding my application setup.
My application a list of Authors, click on author and get author detail plus book titles, and then click on the book title and get book information, but I'm unable to figure out the show detail part.
I have established a tab view controller that displays UIViewControllers in the window.
//create view controllers
UIViewController *vc1 = [[HomeViewController alloc] init];
UIViewController *vc2 = [[AuthorViewController alloc] init];
UIViewController *vc3 = [[BooksViewController alloc] init];
UIViewController *vc4 = [[GenreViewController alloc] init];
UIViewController *vc5 = [[UserViewController alloc] init];
//create instance of tab bar
self.tabBar = [[UITabBarController alloc] init];
//add views to tab bar
self.tabBar.viewControllers = [NSArray arrayWithObjects:vc1,vc2,vc3, vc4, vc5, nil];
self.window.rootViewController = self.tabBar;
//self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
//self.window.backgroundColor = [UIColor whiteColor];
[_window addSubview:_tabBar.view];
[self.window makeKeyAndVisible];
return YES;
This works perfectly. My first view "AuthorViewContoller" is a table and I can display data, however I can NOT get the detailController to show.
My AuthorViewController viewDidLoad method
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
self.author= [[NSArray alloc] initWithObjects:#"One", #"two", nil];
self.detailController = [[AuthorDetailController alloc] init];
and my methoddidSelectRowAtIndexPath:
if(indexPath.row == 0)
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
AuthorDetailController *dc = [[AuthorDetailController alloc] initWithNibName:#"AuthorDetailController" bundle:nil];
dc.title = [author objectAtIndex:indexPath.row];
[self.navigationController pushViewController:dc animated:YES];
}else{
[self.navigationController pushViewController:detailController animated:YES];
}
I'm declaring detailController in my AuthorViewController.h file.
#property (nonatomic, retain) IBOutlet AuthorDetailController *detailController;
You have to actually create a UINavigationController, and have it be part of your controller hierarchy, before you can use pushViewController:animated:. You should really try setting this up in a NIB, instead of code, but in your code you can try this in place of your current vc2 initialization:
UIViewController *vc2 = [[UINavigationController alloc] initWithRootViewController:[[AuthorViewController alloc] init]];