I'm developing an app for ios with a Tab Bar. I have more than 5 buttons on the bar, so on the iphone i have the button more.
Now, suppose i have this buttons: Button1 Button2 Button3 Button4 More (and inside More) Button5 Button6.
If i click More and then Button5 i go in the view relative to Button5. Then i click Button2 (that is not in the More) and i go in the view relative to Button2.
So far so good.
Now if i click More i go not to More Tab but back to the view relative to Button5.
How do i make the more button go always to the more view?
You don't need to add more button. Just set the view controllers to the UITabBarController
- (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated
and it will automatically create a more button if you have more than 5 view controllers! i.e. the count of NSArray is greater than 5.
Another way you could do is, whenever the user presses more, the first button gets removed and other buttons gets added.
Basically you can create an array and keep all the buttons inside it. And then based on the button pressed you can navigate to that particular view.
For Ex:
Initially you have: Button1 Button2 Button3 Button4 Next
After Clicking Next: Prev Button3 Button4 Button5 Button6
I used this code in my app delegate.m to solve the problem
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController {
UITabBarController* tabBarController2 = (UITabBarController*)self.window.rootViewController;
if (tabBarController2.selectedIndex < 4) {
[tabBarController2.moreNavigationController popViewControllerAnimated:NO];
}
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[UIViewController alloc] init];
UIViewController *viewController2 = [[UIViewController alloc] init];
UIViewController *viewController3 = [[UIViewController alloc] init];
UIViewController *viewController4 = [[UIViewController alloc] init];
UIViewController *viewController5 = [[UIViewController alloc] init];
UIViewController *viewController6 = [[UIViewController alloc] init];
UIViewController *viewController7 = [[UIViewController alloc] init];
UIViewController *viewController8 = [[UIViewController alloc] init];
UIViewController *viewController9 = [[UIViewController alloc] init];
[viewController1.view setBackgroundColor:[UIColor whiteColor]];
[viewController2.view setBackgroundColor:[UIColor redColor]];
[viewController3.view setBackgroundColor:[UIColor greenColor]];
[viewController4.view setBackgroundColor:[UIColor grayColor]];
[viewController5.view setBackgroundColor:[UIColor blueColor]];
[viewController6.view setBackgroundColor:[UIColor yellowColor]];
[viewController7.view setBackgroundColor:[UIColor brownColor]];
[viewController8.view setBackgroundColor:[UIColor magentaColor]];
[viewController9.view setBackgroundColor:[UIColor purpleColor]];
[viewController1 setTitle:#"one"];
[viewController2 setTitle:#"two"];
[viewController3 setTitle:#"three"];
[viewController4 setTitle:#"four"];
[viewController5 setTitle:#"five"];
[viewController6 setTitle:#"six"];
[viewController7 setTitle:#"seven"];
[viewController8 setTitle:#"eight"];
[viewController9 setTitle:#"nine"];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = #[viewController1, viewController2, viewController3, viewController4, viewController5, viewController6, viewController7, viewController8, viewController9];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
return YES;
}
I have added a sample AppDelegate code which I tried and its working absolutely fine for me. Let me know what problem your having in this.
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];
I am using this Cocoa Control Side Menu link.
In this Menu, when you start the app you have a Navigation Bar for the first screen, but when you open the menu and press any element of TableView, the ViewController change without Navigation Bar. I want to have a Navigation Bar for each of the elements of the TableView Menu and a left button on the Navigation bar that could open and close the Menu.
I start the application with this code:
// appDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
YPMenuViewController *menuVC = [[YPMenuViewController alloc] init];
YPProfileViewController *contentVC = [[YPProfileViewController alloc] init];
UINavigationController *contentNavigationController = [[UINavigationController alloc] initWithRootViewController:contentVC];
YPSideMenuOptions *options = [[YPSideMenuOptions alloc] init];
YPSideMenuController *sideMenuController = [[YPSideMenuController alloc] initWithMenuViewController:menuVC
contentViewController:contentNavigationController
options:options];
self.window.rootViewController = sideMenuController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
After this, the app starts with Navigation bar.
But then, in the TableView If Select the view controllers like this, I have the Navigation Bar but without button to open an close
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
switch (indexPath.row) {
case 0:
{
YPProfileViewController *contentVC = [[YPProfileViewController alloc] init];
UINavigationController *contentNavigationController = [[UINavigationController alloc] initWithRootViewController:contentVC];
UIButton *iwantView = [[UIButton alloc] initWithFrame:CGRectMake(10, 10, 30, 30)];
[iwantView setBackgroundColor:[UIColor blackColor]];
[iwantView addTarget:self action:#selector(openMenu) forControlEvents:UIControlEventTouchUpInside];
contentNavigationController.navigationItem.leftBarButtonItem =[[UIBarButtonItem alloc] initWithCustomView:iwantView];
[[self sideMenuController] changeContentViewController:contentNavigationController closeMenu:YES];
break;
}
case 1:
{
YPProjectListViewController *contentVC = [[YPProjectListViewController alloc] init];
UINavigationController *contentNavigationController = [[UINavigationController alloc] initWithRootViewController:contentVC];
[[self sideMenuController] changeContentViewController:contentNavigationController closeMenu:YES];
break;
}
default:{
YPProfileViewController *contentVC = [[YPProfileViewController alloc] init];
[[self sideMenuController] changeContentViewController:contentVC closeMenu:YES];
break;
}
}
}
You are adding the button before the view controller is loaded, you should add it after loading the view in your content view controller.
#implementation YPProfileViewController
---------------
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
UIButton *iwantView = [[UIButton alloc] initWithFrame:CGRectMake(10, 10, 30, 30)];
[iwantView setBackgroundColor:[UIColor blackColor]];
[iwantView addTarget:self action:#selector(openMenu) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem =[[UIBarButtonItem alloc] initWithCustomView:iwantView];
}
Anyway I just added a method to add a menu button on the navigation bar more easily.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
[self addLeftMenuButtonWithImage:[UIImage imageNamed:#"menu_icon"]];
}
So this is how I make the navbar:
- (void)viewDidLoad
{
[super viewDidLoad];
UINavigationController *navBar = [[UINavigationController alloc] init];
[navBar willMoveToParentViewController:self];
navBar.view.frame = CGRectMake(0, 0, 320, 44);
[self.view addSubview:navBar.view];
[self addChildViewController:navBar];
[navBar didMoveToParentViewController:self];
...
And everywhere I have read says that this is how you add buttons:
UIBarButtonItem *button = [[UIBarButtonItem alloc]initWithTitle:#"test" style:UIBarButtonItemStyleBordered target:self action:#selector(print_message:)];
self.navigationItem.rightBarButtonItem = button;
[button release];
But the button does not show on the navbar. What is wrong with this code?
Unless you're building a custom container view controller (which is a relatively rare thing to do), you should not be building a UINavigationController inside your content controller's -viewDidLoad. While it will provide you a navigation bar, your view controller parent-child relationship will be backwards: your content controller will contain the navigation controller, rather than the other way around.
Instead, you need to create the navigation controller earlier in your app's startup process - maybe in your application delegate, or in your main storyboard if you're using one. Make sure that the new navigation controller has your content controller as its root controller (usually by way of -initWithRootViewController:). Then your self.navigationItem configuration will work properly.
You should create your navigationbar probably differently:
In your xxxAppDelegate.m edit this method:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
//This is the ViewController of the view you want to be the root
xxxViewController *tvc = [[xxxViewController alloc]init];
//Now you have to initialize a UINavigationController and set its RootViewController
UINavigationController *nvc = [[UINavigationController alloc]initWithRootViewController:tvc];
//Now set the RootViewController to the NavigationViewController
[[self window]setRootViewController:nvc];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
So now you have a proper NavigationController. If you do this in the viewDidLoad method, the NavigationController will be made each time you reload your view.
Now in your xxxViewController.m edit your init method:
- (id)init
{
...
if (self) {
//Create a UINavigationItem
UINavigationItem *n = [self navigationItem];
//Create a new bar button item
UIBarButtonItem *button = [[UIBarButtonItem alloc]initWithTitle:#"test" style:UIBarButtonItemStyleBordered target:self action:#selector(print_message:)];
[[self navigationItem]setRightBarButtonItem:button];
}
return self;
}
This should now display a proper NavigationBar with a UIBarButtonItem.
I have been trying an app with initial login screen which then takes to a TabBarController.
I want to know whats the best approach to do this any example code would be appreciated. I have tried it but I am unable to switch from ViewController to TabController.
I'm not sure that this is the best way to do it, but it's quick and dirty and works. Present a modal view controller inside your applicationDidFinishLaunchineWithOptions: method. You should replace the #selector with something more appropriate to what you want to do. Background color is for effect only.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = #[viewController1, viewController2];
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
// ***** The relevant code *****
UIViewController *viewController = [[UIViewController alloc] init];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
[[viewController view] setBackgroundColor:[UIColor redColor]];
UIButton *dismissButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[dismissButton setFrame:CGRectMake(10, 10, 300, 44)];
[dismissButton setTitle:#"Dismiss" forState:UIControlStateNormal];
[dismissButton addTarget:[self tabBarController] action:#selector(dismissModalViewControllerAnimated:) forControlEvents:UIControlEventTouchUpInside];
[[viewController view] addSubview:dismissButton];
[[self tabBarController] presentViewController:navigationController animated:NO completion:nil];
return YES;
}
I normally wouldn't like to put this sort of code in the app delegate, but if it's a one-time thing like login details, maybe it's ok.
Assume your root view controller is also your login view.
Now from your root view controller, you can present the tab bar controller a number of ways. One way is to just call the presentViewController method from the root view controller.
Setup
From within the root view controller, sometime before presenting the tab bar, set it up:
myTabBarViewController = [[MyTabBarViewController alloc] init];
[myTabBarViewController setModalPresentationStyle:UIModalPresentationFullScreen];
[myTabBarViewController setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
[myTabBarViewController setRootTabBarDelegate:self];
Presentation
When you are ready to present, just call this:
[self presentViewController:myTabBarViewController animated:YES completion:nil];
Notes
The view controller hierarchy looks like this:
AppDelegate
L RootViewController
L MyTabBarController
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]];