I have a View with UINavigationBar:
AppDelegate:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
_homeScreen = [[PrepareScreen alloc] init];
self.mainViewController = [[MyViewController alloc] initWithScreenDef:[self.homeScreen projectHomeScreen] AndBounds:self.window.bounds];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:self.mainViewController];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
return YES;
And then i have a class
MyViewController : UIView <UITableViewDataSource,UITableViewDelegate>
And in my .h file i have:
- (void)viewDidLoad
{
[super viewDidLoad];
self.myTableView = [[UITableView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:self.myTableView];
}
After that i have a wrong height of a screen. I want that my myTableView have a size.height-49.0
Init the tableView with CGRectZero in viewDidLoad method and then in the method viewWillAppear: set the self.myTableView.frame as in this method the view's geometry is already set and self.view.bounds will be correct. So in general: init views in viewDidLoad, but set their geometry in viewWillAppear:.
What about this?
CGRect r = initWithFrame:self.view.bounds;
r.size.height -= 49.0;
self.myTableView = [[UITableView alloc] initWithFrame:r];
Hope it helps...
Related
This is my AppDelegate, i set a title "Pizza", but when i build and play the application, the text don't will appear.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UITabBarController *tabBarController = [[UITabBarController alloc]init];
ListaPizzeViewController *listPizzeVC = [[ListaPizzeViewController alloc]init];
UINavigationController *navigationControllerPizza = [[UINavigationController alloc]initWithRootViewController:listPizzeVC];
[navigationControllerPizza setTitle:#"Pizza"];
navigationControllerPizza.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
ListIngredientsViewController *listIngredientVC = [[ListIngredientsViewController alloc]init];
UINavigationController *navigationControllerIngradient = [[UINavigationController alloc]initWithRootViewController:listIngredientVC];
[navigationControllerIngradient setTitle:#"Ingredient"];
navigationControllerIngradient.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
[tabBarController setViewControllers:#[navigationControllerPizza, navigationControllerIngradient]];
[self.window setRootViewController:tabBarController];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
Why?
According to Your Question you can set title of ListaPizzeViewController using object of ListaPizzeViewController like Bellow:-
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UITabBarController *tabBarController = [[UITabBarController alloc]init];
ListaPizzeViewController *listPizzeVC = [[ListaPizzeViewController alloc]init];
UINavigationController *navigationControllerPizza = [[UINavigationController alloc]initWithRootViewController:listPizzeVC];
[listPizzeVC setTitle:#"Pizza"]; // Here it is you can set Title of Object of Viewcontroller so set like thin not [navigationControllerPizza setTitle:#"Pizza"];
navigationControllerPizza.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
ListIngredientsViewController *listIngredientVC = [[ListIngredientsViewController alloc]init];
UINavigationController *navigationControllerIngradient = [[UINavigationController alloc]initWithRootViewController:listIngredientVC];
[navigationControllerIngradient setTitle:#"Ingredient"];
navigationControllerIngradient.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
[tabBarController setViewControllers:#[navigationControllerPizza, navigationControllerIngradient]];
[self.window setRootViewController:tabBarController];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
go into your ListaPizzeViewController, inside the viewDidLoad write
self.title = #"Pizze";
self.navigationItem.title=#"pizza";
simply call this.
Try to set title in viewWillAppear method.
of "listPizzeVC" as
self.title=#"Pizza";
IT is title is ViewController property so use view controller object and title set I write the code under.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
UITabBarController *tabBarController = [[UITabBarController alloc]init];
ListaPizzeViewController *listPizzeVC = [[ListaPizzeViewController alloc]init];
UINavigationController *navigationControllerPizza = [[UINavigationController alloc]initWithRootViewController:listPizzeVC];
//[navigationControllerPizza setTitle:#"Pizza"];
listPizzeVC.title=#"Pizza";
navigationControllerPizza.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
ListIngredientsViewController *listIngredientVC = [[ListIngredientsViewController alloc]init];
UINavigationController *navigationControllerIngradient = [[UINavigationController alloc]initWithRootViewController:listIngredientVC];
//[navigationControllerIngradient setTitle:#"Ingredient"];
listIngredientVC.title=#"Ingredient";
navigationControllerIngradient.tabBarItem.image = [UIImage imageNamed:#"Default.png"];
[tabBarController setViewControllers:#[navigationControllerPizza, navigationControllerIngradient]];
[self.window setRootViewController:tabBarController];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
I hope it is useful too.
Your code should not be in the appDelegate but in a viewcontroller class that inherits from UIViewController and attach this class to your xib or storyboard screen. One viewcontroller per screen. Add your code to the viewDidLoad or create your own methods. When this doesn't work you might wanna try and post your question again. ;).
I recently started iOS development, it helped me to take little steps and create small project that aimed for learning one thing at a time this way you will learn really fast and efficient without too much frustration. Good luck!
Backstory
Im currently creating an custom class that handles/mimics the look of the Facebook menu app,
i have created this functionality in a separate project (working) and thought it would be a good idea to make the code reusable.
The problem
I'm getting an "unrecognised selector sent to instance" error, while i'm really certain i have implemented the method "handle" i cannot figure out what goes wrong. if anyone would be kind enough to help me. or push me in the right direction
Edit
The full error generated by my output window
2013-03-06 19:56:39.520 SwipeMenuProject[14347:c07] -[__NSArrayM handle:]: unrecognized selector sent to instance 0x7558310
The Code
UISwipeMenuControl.m
#import "UISwipeMenuControl.h"
#implementation UISwipeMenuControl
#synthesize frontWindow = _frontWindow, backWindow = _backWindow, navController = _navController, btnHandle = _btnHandle;
-(id)init
{
self.frontWindow = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.backWindow = [[UIWindow alloc] initWithFrame:CGRectMake(-61,0,[[UIScreen mainScreen] bounds].size.width,[[UIScreen mainScreen] bounds].size.height)];
self.btnHandle = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.btnHandle setFrame:CGRectMake(0, 0, 60, 20)];
[self.btnHandle setTitle:#"Handle" forState:UIControlStateNormal];
UIPanGestureRecognizer * dragGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handle:)];
[self.btnHandle addGestureRecognizer:dragGesture];
UIViewController * viewController = [[UIViewController alloc] initWithNibName:nil bundle:nil];
[viewController setTitle:#"Swipe Menu"];
[viewController.navigationItem setLeftBarButtonItem:[[UIBarButtonItem alloc] initWithCustomView:self.btnHandle]];
self.navController = [[UINavigationController alloc] initWithRootViewController:viewController];
[self.frontWindow setRootViewController:self.navController];
return self;
}
-(UIWindow *)getFrontWindow
{
return self.frontWindow;
}
-(UIWindow *)getBackWindow
{
return self.backWindow;
}
-(UINavigationController *)getNavigationController
{
return self.navController;
}
-(void) setRootViewController:(UIViewController *)viewController
{
self.navController = [[UINavigationController alloc] initWithRootViewController:viewController];
[viewController.navigationItem setLeftBarButtonItem:[[UIBarButtonItem alloc] initWithCustomView:self.btnHandle]];
[self.frontWindow setRootViewController:self.navController];
}
-(void)handle:(id)sender
{
//unrelated code here
}
Appdelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UISwipeMenuControl * swipeMenu = [[UISwipeMenuControl alloc] init];
CustomViewController * cViewController = [[CustomViewController alloc] initWithNibName:nil bundle:nil];
[swipeMenu setRootViewController:cViewController];
self.window = [swipeMenu getFrontWindow];
[self.window setBackgroundColor:[UIColor redColor]];
[self.window makeKeyAndVisible];
return YES;
}
It looks like this is an ownership/memory issue. UISwipeMenuControl seems to be deallocated when the recognizer sends its action.
Enable zombies to investigate if that's the problem.
So, I am trying to achieve having a fixed top banner on Application UIWindow and a working navigation of multiple view controllers. I know there are other ways of performing this but for my project requirements I need to use xibs.
The code below allows to achieve this:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.headerView = [[UIImageView alloc] init];
self.headerView.frame = CGRectMake(0.0f, 20.0f, 320.0f, 44.0f);
self.headerView.image = [UIImage imageNamed: #"header-banner-background.png"];
[self.window addSubview:self.headerView];
self.viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
self.window.rootViewController = navigationController;
[self.window makeKeyAndVisible];
return YES;
}
Then in each ViewController viewWillAppear method I have resized both self.view and self.navigationController.navigationBar.frame in order to show themselves below the banner:
self.navigationController.navigationBar.frame = CGRectMake(0, 64, 320, 44);
self.view.frame = CGRectMake(0, 64, 320, 396);
This is fine, works exactly the way I wanted.
But if the user presses the home button and the application resigns active, when it becomes active again the last viewController seen get's displayed but without the UIWindow banner, and the self.view and navigationBar are displayed on top.
Of course the current UIViewController viewWillAppear method is not called when the application returns active, but even if I put the resize code in another function and call it through a notification it does not work. But when the user presses a bar item and moves in the navigation stack, then everything works again and UIWindow displays the headerView.
Anyone understands why the UIWindow headerView disappears when application returns active?
EDIT 1: Possible solution?
#interface RootViewController ()
{
ViewController *viewController;
UINavigationController *navigationController;
}
#end
#implementation RootViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
}
return self;
}
- (void)loadView
{
// Implement loadView to create a view hierarchy programmatically, without using a nib.
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 88)];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[imageView setImage:[UIImage imageNamed:#"header"]];
[view addSubview:imageView];
navigationController.navigationBar.frame = CGRectMake(0, 44, 320, 44);
[view addSubview:navigationController.navigationBar];
self.view = view;
}
EDIT 2: Second possible solution, still not working
- (void)loadView
{
NSLog(#"loadView root");
// Implement loadView to create a view hierarchy programmatically, without using a nib.
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 88)];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[imageView setImage:[UIImage imageNamed:#"banner"]];
[view addSubview:imageView];
navigationController = [[UINavigationController alloc] init];
navigationController.navigationBar.frame = CGRectMake(0, 43, 320, 44);
[view addSubview:navigationController.navigationBar];
[self addChildViewController:navigationController];
self.view = view;
[self.view setBackgroundColor:[UIColor yellowColor]];
}
This is the result, which seems fine, without the push of the viewController1 (note the yellow background is from the rootViewController):
This instead is the result of adding:
- (void)viewDidLoad
{
viewController1 = [[ViewController1 alloc] initWithNibName:#"ViewController1" bundle:nil];
[navigationController pushViewController:viewController1 animated:YES];
}
The new view controller is not pushed (the background should be black) and the navigation bar has disappeared.
EDIT 3: Olloqui solution, still not working
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.window setBackgroundColor:[UIColor redColor]];
UIView *bannerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
[self.window addSubview:bannerView];
UIView *navigationView = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, 416)];
ViewController1 *viewController1 = [[ViewController1 alloc] initWithNibName:#"ViewController1" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:viewController1];
self.navigationController.navigationBar.frame = CGRectMake(0, 0, 320, 44);
[navigationView addSubview:self.navigationController.navigationBar];
[self.window addSubview:navigationView];
self.window.rootViewController = self.navigationController;
self.window.autoresizesSubviews = YES;
[self.window makeKeyAndVisible];
return YES;
}
Result is I have only the banner, viewController1 is pushed but no navigation bar is displayed. I really need to figure this out, anyone has a different approach?
The window expects to have a root view controlled by its rootViewController property. When returning from the background the window only asks for the rootViewController to restore the appearance of that view controller's view. It doesn't ask all subviews to refresh.
To fix this I would create a new root view controller. This would have the banner and the navigation controller. That navigation controller would then hold your normal view controllers and manage the navigation. The banner will appear properly upon the app returning from the background. Your banner will be stationary while navigation occurs within the navigation controller.
Edit: I whipped up a little example program.
I started with a simple single view app template. I added two view controllers for the content. The just have labels for differentiation, and one has a button that loads the second view.
All the magic happens in the main view controller's viewDidLoad method:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
OneViewController *oneVC = [[OneViewController alloc] initWithNibName:#"OneViewController" bundle:nil];
self.navController = [[UINavigationController alloc]initWithRootViewController:oneVC];
self.navController.view.frame = CGRectMake(0.0, 64.0, 320.0, 416.0);
[self.view addSubview:self.navController.view];
[self addChildViewController:self.navController];
}
The nib for this view loads the image view for the banner.
The example project in on Bitbucket.
I have never tried it before but I would take a shot to create 2 views in the UIWindow, one for the banner and the other one for the navigation + content. Then, insert the navigationBar view in this second view, that will be sized properly. I am not sure if the navigation is going to try to take the full window are, but resizing the navigation controller on each viewWillAppear doesnt look a good solution to me. Try it and comment the result!
I think you can try to workaround this problem by adding the banner view to window.rootViewController.view like this:
[window.rootViewController.view addSubview:bannerView]
Ok, I really needed to solve this ASAP, therefore I opted for a solution I was lucky enough to find here. I still have to solve the management of the UITabBarController added on bottom but the rest seems to be working fine. Thanks everyone for help and additional hints.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
[self.window setBackgroundColor:[UIColor redColor]];
// Create a view for the banner add the banner to this view
UIImageView *bannerImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 45)];
bannerImageView.image = [UIImage imageNamed:#"banner"];
// put this banner above the nav bar
UIView *bannerView = [[UIView alloc] initWithFrame:CGRectMake(0, -44, 320, 44)];
[bannerView addSubview:bannerImageView];
//add the tabBarController as a subview of the view
UITabBarController *tabBarController = [[UITabBarController alloc] init];
[tabBarController.view addSubview:bannerView];
// Move the root view to show status bar & banner
tabBarController.view.frame = CGRectMake(0, 20+44, 320, 480-20-44);
//add the modified logo view to window
[self.window addSubview:tabBarController.view];
ViewController1 *viewController1 = [[ViewController1 alloc] initWithNibName:#"ViewController1" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController1];
tabBarController.viewControllers = [NSArray arrayWithObjects:navigationController, nil];
//tabBarController.tabBar.hidden = YES;
[self.window setRootViewController:tabBarController];
[self.window makeKeyAndVisible];
return YES;
}
Trying to programmatically add a splash image that hangs around for a specified amount of time. I have Default.png already imported into my project, and I see it flicker as the launch image when the simulator launches. I'm not sure how to make Default.png hang around as the splash image.
In AppDelegate.m, inside didFinishLaunchingWithOptions I do the following:
MyViewController *mvc = [[MyViewController alloc] init];
UINavigationController *navController = [[[UINavigationController alloc] initWithRootViewController:mvc] autorelease];
[navController setNavigationBarHidden: YES];
MyViewController as you might suspect, is a subclass of UIViewController, and in the loadView method I do the following:
self.mainView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.view = mainView;
mainView.backgroundColor = [UIColor yellowColor];
Then I created SplashScreenViewController, also a subclass of UIViewController, and in the loadView method I do the following:
splashView = [[[UIImageView alloc] initWithFrame:CGRectMake(0,0, 320, 480)] autorelease];
splashView.image = [UIImage imageNamed:#"Default.png"];
Finally, back in AppDelegate I have the following after makeKeyAndVisible:
SplashScreenViewController *splashScreen = [[SplashScreenViewController alloc] init];
splashScreen.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[navController presentModalViewController:splashScreen animated:NO];
I think I'm just stuck understanding how to tie all the UIViewController subclasses together, and how to reference them from AppDelegate (or whether I should even be doing that), etc. Any tips are appreciated. I can clarify if my question is muddy.
You can move this to MyViewController's viewDidLoad
SplashScreenViewController *splashScreen = [[SplashScreenViewController alloc] init];
splashScreen.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[navController presentModalViewController:splashScreen animated:NO];
Or you could do this in you AppDelegate, before makeKeyAndVisible
splashView = [[[UIImageView alloc] initWithFrame:CGRectMake(0,0, 320, 480)] autorelease];
splashView.image = [UIImage imageNamed:#"Default.png"];
[self.window addSubview:splashView];
[self.window bringSubviewToFront:splashView];
What's your plan for dismissing the view?
I'm getting this gap at the bottom of my window after I add the view of a custom UIViewController. The gap goes away as the view is shifted down after I move to another view and then back.
Here is the code in the app delegate:
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Override point for customization after application launch
CustomViewController *gvc = [[CustomViewController alloc] init];
self.customViewController = gvc;
[gvc release];
[window addSubview:customViewController.view];
[window makeKeyAndVisible];
}
"CustomViewController" is used as a root view controller to simply coordinate which other UIViewControllers to display. As such I simply set its view = to that of the first ViewController's view needed like so:
- (void)loadView {
UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
self.view = v;
[v release];
// Add the HomeViewController to the top of the stack
MainViewController *mvc = [[MainViewController alloc] initWithNibName:#"MainView" bundle:nil];
mvc.delegate = self;
self.mainViewController = mvc;
[mvc release];
[self.view addSubview:self.mainViewController.view];
}
I've tried a bunch of things including what you see here with no luck. Any ideas?
thanks
This line
UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
should be ...
UIView *v = [[UIView alloc] initWithFrame:CGRectMake(0, 20, 320, 460)];
Good times.