I am creating a sample empty application and added UIViewController class,
Below is the code in the App delgate
TestViewController* viewController = [[TestViewController alloc] initWithNibName:#"TestViewController" bundle:nil];
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:viewController];
[self.window setRootViewController:navController];
Now i am rotating the App but in the UPsidedown Orientation Navigation bar is not Rotating I am attaching a screen shot
Then Added a the Below Method in App delegate
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
return UIInterfaceOrientationMaskAll;
}
And in the Class i have added following methods
-(BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
return (UIInterfaceOrientationMaskAll);
}
In the Summary i have activated all the orientations can any One tell me the Solution for it
1) just You created a category for UINavigationController class and I defined these methods
In CustomViewController.h
#import <UIKit/UIKit.h>
#interface CustomViewController : UINavigationController
#end
In CustomViewController.m
#import "CustomViewController.h"
#interface CustomViewController ()
#end
#implementation CustomViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(BOOL) shouldAutorotate{
return YES;
}
-(NSUInteger) supportedInterfaceOrientations{
return UIInterfaceOrientationMaskAll;
}
And AppDelgate.m file
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
CustomViewController *navController = [[CustomViewController alloc] initWithRootViewController:self.viewController];
// Override point for customization after application launch.
self.window.rootViewController = navController;
[self.window makeKeyAndVisible];
return YES;
}
2) And check Orientation In Target
3) Change the class from UINavigationController to the CustomViewController in my XIB in IB
4) Reset the Simulator and run the code, I think your problem will be solve.
i think you need to use
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return TRUE;
}
instead of shouldAutorotate
Upside Down button to ON in Supported interface orientations on Xcode
http://www.appcoda.com/ios-game-tutorial-maze-part-1/
`TestViewController* viewController = [[TestViewController alloc] initWithNibName:#"TestViewController" bundle:nil];
[self.window setRootViewController:viewController];`
remove the navigatioan bar from appdelegate and then check
Related
I am a begginer with Objective-C programming.
I searched here and in other websites to a way to solve my problem but i did not find.
I want to create an login view before the system load. Then, after login i want to dismiss it.
On my project i use ARC and not use Storyboards.
When i debug and look into the function "efetuarLogin" the value of property delegate is 0x000000. I think it is blank, is not?
According to the tutorials and other tips i found on the internet, this is the right way to code delegate. Can you check this for me?
Here is the code:
Login.h
#import <UIKit/UIKit.h>
#class Login;
#protocol LoginDelegate <NSObject>
#required
- (void)loginDidFinish: (Login *)login;
#end
#interface Login : UIViewController{
__weak id<LoginDelegate> delegate;
}
#property (nonatomic, weak) id <LoginDelegate> delegate;
- (IBAction)efetuarLogin:(id)sender;
#end
Login.M
#import "Login.h"
#implementation Login
#synthesize delegate;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)efetuarLogin:(id)sender {
[delegate loginDidFinish:self];
}
#end
MainController.h
#import <UIKit/UIKit.h>
#import "Login.h"
#interface MainController : UITabBarController <LoginDelegate>
#end
MainController.m
#import "MainController.h"
#import "Login.h"
#import "ModalViews.h"
#import "Alerts.h"
#import "ViewPadrao.h"
#import "TableView.h"
#implementation MainController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
ModalViews *modalViews = [[ModalViews alloc] initWithNibName:#"ModalViews" bundle:nil];
Alerts *alerts = [[Alerts alloc] initWithNibName:#"Alerts" bundle:nil];
ViewPadrao *viewPadrao = [[ViewPadrao alloc] initWithNibName:#"ViewPadrao" bundle:nil];
TableView *tableView = [[TableView alloc] initWithNibName:#"TableView" bundle:nil];
self.viewControllers = #[modalViews, alerts, viewPadrao, tableView];
}
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
Login *login = [[Login alloc] initWithNibName:#"Login" bundle:nil];
[login setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentViewController:login animated:NO completion:nil];
}
- (void)loginDidFinish: (Login *)login{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Sua mensagem aqui" message:#"Mensagem" delegate:self cancelButtonTitle:#"Fechar" otherButtonTitles:nil];
[alert show];
[self dismissViewControllerAnimated:YES completion:nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
And the method didFinishLaunchingOptions of AppDelegate.m:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
mainController = [[MainController alloc] init];
window.rootViewController = mainController;
[window makeKeyAndVisible];
return YES;
}
Sorry for the high quantity of code. I am thankful since already!!
I am using the ViewDidAppear method to show Login to users. But when i dismiss and the MainController appears, the method viewdidapper creates the Login again.
How i do to show login once? When i tried to do this on viewdidload it did not work. The login did not appear.
In your MainViewController.m when you create login object
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
Login *login = [[Login alloc] initWithNibName:#"Login" bundle:nil];
login.delegate = self; //add this line
[login setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentViewController:login animated:NO completion:nil];
}
EDIT : After seeing OP's edit in the question (which should have been a different thread)
Your view Controller hierarchy is wrong. The ideal flow should be
1) Show Login controller directly from App delegate.
2) After successfull login, show MainViewController from Login Controller.
I'm trying to change the viewcontroller's color.
Someone let me know like following.
- (void)viewDidLoad
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
}
Here is AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
self.viewController = [[[ViewController alloc] init] autorelease];
} else {
self.viewController = [[[ViewController alloc] init] autorelease];
}
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}
This is ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
But, result is that viewcontroller is black screen.
How to change to settings backgroundcolor?
try this
self.view.backgroundColor=[UIColor clearColor];
So i have my main viewController and all i have is a single button inside.
The code of the button is :
- (IBAction)eventsButton:(id)sender {
self.eventsViewController =[[EventsViewController alloc]initWithNibName:#"EventsViewController" bundle:nil];
[self.navigationController pushViewController:eventsViewController animated:YES];}
where EventsViewController is another controller where i want to navigate when this button is clicked. But when i click it nothing happens.. I dont navigate to the other controller.
ViewController.h
-------------------
#import <UIKit/UIKit.h>
#class EventsViewController;
#interface ViewController : UIViewController <UIActionSheetDelegate>
- (IBAction)eventsButton:(id)sender;
#property (strong, nonatomic) EventsViewController *eventsViewController;
#end
ViewController.m
-----------------
#import "ViewController.h"
#import "EventsViewController.h"
#implementation ViewController
#synthesize eventsViewController;
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
}
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated
{
[super viewDidDisappear:animated];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (IBAction)eventsButton:(id)sender {
self.eventsViewController =[[EventsViewController alloc]initWithNibName:#"EventsViewController" bundle:nil];
[self.navigationController pushViewController:eventsViewController animated:YES];
}
#end
I put a breakpoint in the IBACTION and i see that the code is executed , but it never navigates me to the other controller. The other controller is just a simple controller i created with Xcode , it has all the code Xcode gives and nothing mine.
Any ideas?
My guess is you didn't put ViewController inside UINavigationController. First you have to alloc and init UINavigationController. So inside application: didFinishLounchingWithOptions:
ViewController *viewController = [[ViewController alloc] init];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController]
[self.window setRootViewController:navigationController];
[self.window makeKeyAndVisible]
It should work.
[self.navigationController pushViewController:eventsViewController animated:YES];
its works only current view controller is navigation controller.Actually you implement this code in normal view controller not in navigation controller. Check with this following code replace above line
[self presentModalViewController:eventsViewController animated:YES];
So You need to implement navigation controller for your current view controller. In Appdelegate you change root view controller to navigation controller with your view controller.
UINavigationController *navController = [[[UINavigationController alloc] initWithRootViewController:yourController] autorelease];
self.window.rootViewController = navController;
I want to put a tab bar for one place in my app. From there i can load some other view controllers, but that's it. I don't want it for my whole application. All examples I read through are making the tab bar controller as the rootviewcontroller of the window.
So how do i do that?
Thank you!
his may help you, Consider your view controller is HomeView where from you are going to push a tab bar controller, The HomeView is loaded in view at below:
#import "AppDelegate.h"
#implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
HomeView *homeview = [[HomeView alloc] initWithNibName:#"HomeView" bundle:nil];
UINavigationController *navigation = [[UINavigationController alloc] initWithRootViewController:homeview];
self.window.rootViewController = navigation;
[self.window makeKeyAndVisible];
return YES;
}
#end
then the .h, .m and .xib files of HomeView are going to be as follows:
In HomeView.h
#import <UIKit/UIKit.h>
#interface HomeView : UIViewController
{
IBOutlet UITabBarController *tabBarController;
}
-(IBAction)loadTabBar:(id)sender;
#end
and the HomeView.m is:
#implementation HomeView
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(IBAction)loadTabBar:(id)sender
{
[self.navigationController pushViewController:tabBarController animated:YES];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#end
and the .xib file must be as follows:
The tabBarController IBOutlet must be connected to the UITabBarController that on the .xib file. And that UITabBarController with two view controllers named FirstViewController, SecondViewController. Moreover that the HomeView must be inside a UINavigationController.
If not clarified with this answer, I'll update with detailed explanation.
The above is a way of loading tab bar controller using XIB method.
You can do this by coding like below by changing something in IBAction(button action) , In HomeView.m file:
#import "HomeView.h"
#import "FirstViewController.h"
#import "SecondViewController.h"
#implementation HomeView
-(IBAction)loadTabBar:(id)sender
{
FirstViewController *firstView = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
tabBarController = [[UITabBarController alloc] init];
tabBarController.viewControllers = [NSArray arrayWithObjects:firstView, secondView, nil];
[self.navigationController pushViewController:tabBarController animated:YES];
}
#end
You have to make tabBar in app delegate and then add when ever you want using this
-(void)addTabBarController
{
AppDelegate *appdelegte =(AppDelegate*)[[UIApplication sharedApplication]delegate];
//[[[appdelegte navigationController] view]removeFromSuperview];
[[appdelegte window]addSubview:[[appdelegte tabcontroller]view]];
[[appdelegte tabcontroller]setSelectedIndex:0];
}
I'm new to Cocoa development and suspect that this is a noob issue.
I'm creating a simple background canvas with a bespoke UIView. I was expecting that I would be able to create this canvas to be slightly indented down from the main view so that I could add a toolbar at a later date. However, when I use initWithFrame (and any other init for that matter), the canvas is always created to be the size of the full screen rather than slightly smaller than the full screen. Even if I completely override the values for CGRect it doesn't make a difference. I've set a touchesBegan event and set the background colour to green to be able to determine success but all I get are a completely green screen and a touch event that works everywhere.
Please help - this is driving me mad and I can't find the answer anywhere on the web.
The relevant code is as follows (there actually isn't much more code than this in the whole app so far):
AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.objMainViewController = [[MainViewController alloc] init];
self.window.rootViewController = self.objMainViewController;
[self.window makeKeyAndVisible];
return YES;
}
MainViewController.h
#import <UIKit/UIKit.h>
#import "viewCanvas.h"
#interface MainViewController : UIViewController
#property (strong, nonatomic) viewCanvas *objViewCanvas;
-(id)init;
#end
MainViewController.m
#import "MainViewController.h"
#import "viewCanvas.h"
#implementation MainViewController
#synthesize objViewCanvas;
-(id)init
{
if (self = [super init]) {
CGRect frame = CGRectMake(100, 100, 100, 100);
objViewCanvas = [[viewCanvas alloc] initWithFrame:frame];
}
return self;
}
- (void)loadView {
self.view = objViewCanvas;
}
- (void)viewDidLoad
{
[super viewDidLoad];
}
viewCanvas.h
#import <UIKit/UIKit.h>
#import "viewCanvas.h"
#interface viewCanvas : UIView {
}
//Init
- (id) initWithFrame:(CGRect)frame;
//Events
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
#end
viewCanvas.m
#import "viewCanvas.h"
#implementation viewCanvas
//Standard inits
- (id) initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
[self setBackgroundColor:[UIColor greenColor]];
return self;
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Touches Began Canvas" message:#"Canvas Touches Began" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles: nil];
[alert show];
}
#end
I think by default the view of a view controller fills the whole screen, so you need to add a subview to that view that's your smaller viewCanvas object (BTW, you should conform to the naming rules and name your classes with capital letters, ViewCanvas). Try this in your MainViewController .m file:
-(id)init{
if (self = [super init]) {
CGRect frame = CGRectMake(100, 100, 100, 100);
objViewCanvas = [[ViewCanvas alloc] initWithFrame:frame];
self.contentView = [[UIView alloc] initWithFrame:CGRectMake(1, 1, 1, 1)]; //this frame doesn't matter
[self.contentView setBackgroundColor:[UIColor whiteColor]];
}
return self;
}
- (void)loadView {
self.view = self.contentView;
[self.view addSubview:objViewCanvas];
}