here's my code in mainViewController.m:
#import "SideViewController.h"
- (void)viewDidLoad{
SideViewController *sideVC = [[SideViewController alloc] initWithFrame:CGRectMake(0, 0, 250,self.view.bounds.size.height)];
[self.navigationController.view addSubview:sideVC.view];
}
mainViewController was embedded in UINavigationController via storyboard
sideViewController was added to UINavigationController as its subview because I needed it cover the Navigation Bar
and how it shows on iOS8 simulator:
How could I make it fit the screen bounds?
I guess autoresize mask solve this problem:
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if (self)
{
sideVC = [SideViewController new];
[sideVC.view setFrame:CGRectMake(0, 0, 250,self.view.bounds.size.height)];
sideVC.view.autoresizingMask = UIViewAutoresizingNone;
}
return self;
}
Related
I want to make status bar look solid black like Facebook(Blue) and should remain the same solid when navigation bar hides on scroll. I need to do it programmatically in swift.
I don't want to add a UIView on the top.
Can it be done with AppDelegate?
I am not using navigation controller i am using Xibs.
Yes you can easily create a UIView class and add it to app delegate like this:
//In statusBar.h
#interface statusBar : UIView{
}
//In statusBar.m
#implementation statusBar
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self)
{
self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.7];
UIButton *navigationButton = [[UIButton alloc] initWitFrame:CGRectMake(10,10,25,25)];
[self addSubView:navigationButton];
}
return self;
}
Now you can create its frame in app delegate like this:
//in appDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
statusBar *sb = [[statusBar alloc] initWithFrame:CGRectMake(0,0, self.window.bounds.size.width, 50)];
[self.window addSubview:sb];
}
Now keep your frame of every view controller below the statusBar:
//In ViewDidLoad method:
self.view.frame = CGRectMake(0, 50, self.view.frame.size.width, self.view.frame.size.height); //50 is the height of status bar
Hope it will help.
I am creating an app using iOS 5, and I want to work as follows:
MainViewController w/ NavigationBar, and i set on viewDidLoad:
- (void)viewDidLoad
{
[super viewDidLoad];
NavViewController *nav = [[NavViewController alloc] init];
[self addChildViewController:nav];
[self.view addSubview:nav.view];
}
Like a "partial view" with some nav controls (my own/custom toolbar), and at NavViewController:
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect viewRect = CGRectMake(0, 0, 320, 200);
self.view.frame = viewRect;
self.view.backgroundColor = [UIColor redColor];
}
At this point I have MainViewController with a navigation subview and still have space (in MainViewController view) that another subview can be added using the actions NavViewController.
Is there a serious flaw in this logic? or I can keep developing ?
Thnks a lot.
firstly I want to say that I am newbie at iOS development. I have a problem with showing a view from xib file in ScrollView.
This MyView is only green background with one label. Here is a code from its controller:
#implementation MyView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
//init code
}
return self;
}
- (id) initWithCoder:(NSCoder *)aDecoder
{
if (self = [super initWithCoder:aDecoder]) {
[self setAutoresizingMask:UIViewAutoresizingFlexibleHeight];
}
return self;
}
#end
And here is a code from main controller where is the ScrollView:
- (void)viewDidLoad
{
[super viewDidLoad];
scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 67, self.view.frame.size.width, self.view.frame.size.height)];
scroll.pagingEnabled = YES;
scroll.frame = CGRectMake(0, 20, 320, 350);
scroll.contentSize = CGSizeMake(320, 350);
scroll.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
scroll.bounces = YES;
scroll.bouncesZoom = YES;
scroll.scrollEnabled = YES;
scroll.minimumZoomScale = 0.5;
scroll.maximumZoomScale = 5.0;
scroll.delegate = self;
scroll.pagingEnabled = YES;
NSArray *nibContents = [[NSBundle mainBundle] loadNibNamed:#"MyView" owner:self options:nil];
UIView *myView = [nibContents objectAtIndex:0];
myView.frame = CGRectMake(0,20,300,300);
[scroll addSubview:myView];
}
Only thing I want to do is that I want to see MyView (green background with one label) inside the ScrollView. If I run this app, scrollview is empty, nothing is shown inside.
Probably it is a stupid question but as I said, I am newbie at this. I have a PageControll app from Apple but for me this is quite complicated code in my iOS beginning. Of course I was googling... Please tell me where is a problem. Thank you
Where do you define scroll? Is it a property of your viewcontroller?
I think the problem here is that you don't add scroll view to your viewcontroller's view with
[self.view addSubview:scroll]
Everything seems to right. Just retain the view in your class that you are receiving from the following line and add that as a subview to your scrollview.
self.myView = [nibContents objectAtIndex:0];
Best Regards.
I have 2 view controllers, the first is a storyboard (this is root) and the second with is nibless. When I press a button in the root view controller it should call the second controller.
Here the code for my second view controller:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
UILabel *sampleLabel = [[UILabel alloc] initWithFrame: CGRectMake(0,0,100,100)];
UIImageView * basketItem = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"B.jpg"]];
[self.view addSubview:sampleLabel];
[self.view addSubview:basketItem];
NSLog(#"%#",self.view.subviews);
sampleLabel.text = #"Main Menu";
}
return self;
}
self.view.sebviews query shows that 2 objects label and imageView objects exists, but in fact I see black screen only.
Here is transition method
- (void)transitionToViewController:(UIViewController *)aViewController
withOptions:(UIViewAnimationOptions)options
{
aViewController.view.frame = self.containerView.bounds;
[UIView transitionWithView:self.containerView
duration:0.65f
options:options
animations:^{
[self.viewController.view removeFromSuperview];
[self.containerView addSubview:aViewController.view];
}
completion:^(BOOL finished){
self.viewController = aViewController;
}];
}
Move the code in viewDidLoad. Here you are sure the view has been loaded into memory and hence can be further customized.
- (void)viewDidLoad
{
[super viewDidLoad];
UILabel *sampleLabel = [[UILabel alloc] initWithFrame: CGRectMake(0,100,100,100)];
UIImageView * basketItem = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"B.jpg"]];
[self.view addSubview:sampleLabel];
[self.view addSubview:basketItem];
NSLog(#"%#",self.view.subviews);
sampleLabel.text = #"Main Menu";
}
If you are not using ARC, pay attention to memory leaks.
Note
I really suggest to read Apple doc for this. You should understand how things work. Hope that helps.
http://developer.apple.com/library/ios/#featuredarticles/ViewControllerPGforiPhoneOS/ViewLoadingandUnloading/ViewLoadingandUnloading.html
Edit
I don't know what the problem could be. To make it work, try to override loadView (in MenuViewController) method like the following:
- (void)loadView
{
CGRect applicationFrame = [[UIScreen mainScreen] applicationFrame];
UIView *contentView = [[UIView alloc] initWithFrame:applicationFrame];
contentView.backgroundColor = [UIColor redColor]; // red color only for debug purposes
self.view = contentView;
}
Leave the viewDidLoad method as I wrote and see what happens.
When you create the view controller use only init method.
MenuViewController *vc = [[MenuViewController alloc] init];
Your UILabel's frame has size.width=0:
CGRectMake(0,100,0,100)
and if B.jpg is not added to the project you UIImageView will also be empty.
Also, if second UIViewController doesn't have a XIB, initialize it using the - (id)init method instead of - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil.
I watched the WWDC video on UIViewController Containment and read through this blog post: http://www.cocoanetics.com/2012/04/containing-viewcontrollers/
but I can't get my initial view controller to show. Is there something I am missing? In my ContainerViewController.m
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
_homeViewController = [[HomeViewController alloc] init];
_detailViewController = [[DetailViewController alloc] init];
[self setSubViewControllers:#[_homeViewController, _detailViewController]];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
if (_selectedViewController.parentViewController == self) {
// nothing to do
return;
}
// adjust the frame to fit the container view
_selectedViewController.view.frame = _containerView.bounds;
// make sure that it resizes on rotation automatically
_selectedViewController.view.autoresizingMask = _containerView.autoresizingMask;
// add as child VC
[self addChildViewController:_selectedViewController];
// add it to container view, calls willMoveToParentViewController for us
[_containerView addSubview:_selectedViewController.view];
// notify that move is done
[_selectedViewController didMoveToParentViewController:self];
}
- (void)loadView {
// set up the base view
CGRect frame = [[UIScreen mainScreen] bounds];
UIView *aView = [[UIView alloc] initWithFrame:frame];
aView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
aView.backgroundColor = [UIColor blueColor];
// set up content view
_containerView = [[UIView alloc] initWithFrame:frame];
_containerView.backgroundColor = [UIColor grayColor];
_containerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[aView addSubview:_containerView];
self.view = aView;
}
- (void)setSubViewControllers:(NSArray *)subViewControllers {
_subViewControllers = [subViewControllers copy];
if (_selectedViewController) {
// remove previous VC
}
_selectedViewController = _subViewControllers[0];
}
My ContainerViewController is the initial view controller in my storyboard. I see that it shows on the simulator, but the HomeViewController (the first child view controller in my container) does not show.
When I step through the debugger, the subViewControllers property of my ContainerViewController does have the homeViewController and detailViewController in it. The viewDidLoad of HomeViewController also does get called. I just don't see anything on screen except the background color of the ContainerViewController.
Any thoughts? Thanks.
So I'm not the brightest person in the world, but the reason nothing was being shown on the screen was because the nibs were in the storyboard and I needed to do this instead:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard_iPad" bundle:nil];
_homeViewController = [storyboard instantiateViewControllerWithIdentifier:#"HomeViewController"];
_detailViewController = [storyboard instantiateViewControllerWithIdentifier:#"DetailViewController"];
Hopefully this helps someone who is also not familiar with Storyboards yet.
You have an NSArray, but you are trying to access it as a C array.
_subViewControllers[0]
should be:
[_subViewControllers objectAtIndex:0];
That being said, you seem to have some code that could be better in other methods. I would personally clean this up a lot and make it much simpler. I would remove loadView and _containerView, and just use self.view as one normally would. For what you are trying to do, there really doesn't even seem a need to track parent and child view controllers. Anyway, this is how I would do it:
#interface ContainerViewController ()
#property (nonatomic, retain) NSArray *subViewControllers;
#end
#implementation ObservationReportViewController {
UIViewController *_selectedViewController;
}
#synthesize subViewControllers = _subViewControllers;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
HomeViewController *homeViewController = [[HomeViewController alloc] init];
homeViewController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
DetailViewController *detailViewController = [[DetailViewController alloc] init];
detailViewController.view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// Retain the view controllers.
self.subViewControllers = #[homeViewController, detailViewController];
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self setSelectedViewController: [_subViewControllers objectAtIndex:0]];
}
-(void)setSelectedViewController:(UIViewController *)selectedViewController {
if (_selectedViewController != selectedViewController) {
[_selectedViewController.view removeFromSuperview];
_selectedViewController = selectedViewController;
// adjust the frame to fit the container view
[self.view addSubview:_selectedViewController.view];
//_selectedViewController.view.frame = _containerView.bounds;
_selectedViewController.view.frame = self.view.bounds;
}
}
If you set the InitialViewController through the storyboard in a different storyb than the MainStoryboard, then you need to update the project settings to use that new storyboard.
Go to project settings, General and set the Main Interface setting to the new storyboard