I want to create a Kobold2D app with a container view that will hold both the cocos2d CCDirector view and my own UIViews. I can see from documentation that this can be done using the alternateView method in the AppDelegate but I can't see how to use this method and what exactly it should return. Could you provide me with an example?
It should simply return a UIView. The "Cocos2D with UIKit Views" template project uses the alternateView method to create exactly this kind of container view:
#implementation AppDelegate
-(id) alternateView
{
// we want to be a dummy view the self.view to which we add the glView plus all other UIKit views
KKAppDelegate* appDelegate = (KKAppDelegate*)[UIApplication sharedApplication].delegate;
// add a dummy UIView to the view controller, which in turn will have the glView and later other UIKit views added to it
CGRect bounds = [appDelegate.window bounds];
UIView* dummyView = [[UIView alloc] initWithFrame:bounds];
[dummyView addSubview:[CCDirector sharedDirector].view];
return dummyView;
}
#end
This code goes in your project's AppDelegate.m
Related
I have one UIViewController without NIB file. Now i have one my customized UIView. I want to make UIViewController's view inherit from my customized UIView, is it possible ? I know that if I have XIB file than I can make Custom Class from there but without XIB can it be done?
Thanks in Advance
If you are using a UIViewController subclass, and don't want to use a nib file, then override the loadView method in your subclass:
#implementation MyViewController
- (void)loadView {
self.view = [[MyView alloc] init];
// additional view setup here
}
If you are just using a generic UIViewController (not a subclass), then you might be able to just assign to the view controller's view property, like this:
vc.view = [[MyView alloc] init];
But I'm not sure if that works properly outside of loadView. I haven't seen any documentation that says it is or is not allowed.
Replace your view controller's view like this:
// ViewController.m, in viewDidLoad
self.view = [[MyCustomView alloc] initWithFrame:self.view.bounds];
A more conventional alternative is to fill the default view with the custom subview, like this:
MyCustomView *myCustomView = [[MyCustomView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:myCustomView];
I think you need to load a custom view programmatically, for that you need to override the loadView method of your view controller.
-(void)loadView
{
[super loadView];
CustomView *view = [[CustomView alloc]initWithFrame:self.view.bouds];
[self.view addSubview:view];
}
Replace this in your .h file
#interface ViewController : UIViewController
with
#interface ViewController : Customized View Controller
I am trying to add a static fixed image to a UITableViewController, but when I do the standard [self.view addSubview:imageView]; the image is placed on the tableview and moves with the scrolling.
Is there any way to do this so that the image stays fixed?
I know one method would be to create a UIViewController, then add the UIImageView and a UITableView, but unfortunately, I am using a custom UITableViewController (just a library found on gihub to do what I needed), so my controller must be a UITableViewController.
Is there any way to do this? I've been going at this for a while with no luck.
Cheers,
Brett
There is no problem using UIViewController idea. You just keep 2 view controllers: 1) UIViewController, which has the UIImageView inside, and subview the view of 2) the UITableViewController. If necessary, make the UITableViewController a strong reference of the UIViewController.
I have done something similar all the time.
Yes, there are few ways. You could create your view hierarchy programmatically at
viewDidLoad or use a NIB file. Make sure that you correctly link the delegates and view properties.
If a nib file is specified via the initWithNibName:bundle: method (which is declared by the superclass UIViewController), UITableViewController loads the table view archived in the nib file. Otherwise, it creates an unconfigured UITableView object with the correct dimensions and autoresize mask. You can access this view through the tableView property.
If a nib file containing the table view is loaded, the data source and delegate become those objects defined in the nib file (if any). If no nib file is specified or if the nib file defines no data source or delegate, UITableViewController sets the data source and the delegate of the table view to self.
As https://stackoverflow.com/a/6961973/127493 say, UITableViewControllers can be replaced by simple UIViewControllers.
In fact, the trick is to add an UITableView to you UIViewController, make it delegate and etc..., and add it to your UIViewController.view.
So you will be able to add some "sister" views to your controller main view.
In my case, I am adding a an Image ( actually button with image) and when user touches on image, it will disappear and tableview will be shown.
so i am disabling scroll first then enable it back
find code below
// in viewDidLoad
[self.view addSubview:imgview];
tbl.scrollEnabled = NO;
// in -(IBAction)btnClicked:(id)sender
[imgview removeFromSuperview];
tbl.scrollEnabled = YES;
Thats working for me.
Do NOT use UITableViewController at all (I never use it and as I've heard nearly any developer uses it). It is a nightmare when you want to customize design with it.
Create your own subclass of UIViewController (MYTableViewController), add UITableView *tableView instance #property and #synthetize it:
#interface MYTableViewController : UIViewController <UITableViewDelegate,UITableViewDataSource> {
UITableView *tableView;
}
#property (nonatomic, retain) IBOutlet UITableView *tableView;
#end
Then in implementation add it to the view (using XIB or viewDidLoad method):
#implementation MYTableViewController
#synthesize tableView;
// If not XIB used:
-(void)viewDidLoad{
[super viewDidLoad];
CGRect frame = self.view.bounds;
self.tableView = [[[UITableView alloc] initWithFrame:frame style:UITableViewStylePlain] autorelease];
tableView.dataSource = self;
tableView.delegate = self;
[self.view addSubview:tableView];
// And here you van add your image:
[self.view addSubview:imageView];
}
// Do not forget to release it and clear delegate and datasourcce when view uloads:
#pragma mark - Memory management:
-(void)dealloc{
self.tableView.delegate = nil;
self.tableView.dataSource = nil;
self.tableView = nil;
[super dealloc];
}
- (void)didReceiveMemoryWarning {
self.tableView.delegate = nil;
self.tableView.dataSource = nil;
self.tableView = nil;
[super didReceiveMemoryWarning];
}
-(void)viewDidUnload{
self.tableView.delegate = nil;
self.tableView.dataSource = nil;
self.tableView = nil;
[super viewDidUnload];
}
#end
I have a UIView subclass -
#interface DatePickerPopup : UIView
UIToolbar *toolbar;
UIDatePicker *datePicker;
#end
#implementation
- (id)initWithFrame:(CGRect)frame
{
NSArray *xib =
[[NSBundle mainBundle]
loadNibNamed:#"DatePickerPopup"
owner:self
options:nil];
self = [xib objectAtIndex:0];
if (self) {
}
return self;
}
#end
and the nib looks like -
In my UIViewController containing the DatePickerPopup (datePopup):
- (void)viewDidLoad
{
datePopup = [[DatePickerPopup alloc] initWithRect:CGRectZero];
CGRect newFrame = datePopup.frame;
newFrame.y = 200.0f; //lets say this aligns it to the bottom in portrait
datePopup.frame = newFrame;
// Normally happens when accessory button pressed but for brevity...
[self.view.superview addSubview:datePopup];
}
- (void)willAnimateRotationToInterfaceOrientation:
(UIInterfaceOrientation)toInterfaceOrientation
duration:(NSTimeInterval)duration
{
CGRect screen = [[UIScreen mainScreen] bounds];
if (toInterfaceOrientation == UIInterfaceOrientationPortrait ||
toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
{
self.datePopup.frame =
CGRectMake(0.0f, newHeightPortrait, screen.size.width, 260.0f);
}
else
{
self.datePopup.frame =
CGRectMake(0.0f, newHeightLandscape, screen.size.width, 260.0f);
}
}
However, this gets stretched out for some reason when the orientation changes the view gets stretched to the height of the screen bounds - the navigation bar...
after viewDidLoad
after willAutorotate...
Since your view controller appears to be managed by a navigation controller, calling [self.view.superview addSubview:datePopup]; adds your popup as a subview of a UIViewControllerWrapperView, which is one of the private classes UIKit uses to implement the functionality of UINavigationController. Messing with UIKit's private view hierarchy is always risky. In this case, based on the behavior you're seeing, it seems likely that UIKit expects any subview of UIViewControllerWrapperView to be a view controller's view, so it resizes your popup accordingly.
I think the safest way to resolve this is to have your view controller's view be a wrapper that contains your tableView and, when necessary, your popup view. Unfortunately using a wrapper view means that the view controller can't be a UITableViewController. You'll have to change the superclass to UIViewController, set a custom tableView property, and manually adopt the UITableViewDataSource and UITableViewDelegate protocols.
Note: You might be tempted to add your popover as a subview of your window, but I'm not recommending that because UIWindow only autorotates its topmost subview corresponding to a view controller. This means that if you add your popover to your window, it won't autorotate.
EDIT: BTW, by reassigning self = [xib objectAtIndex:0]; in initWithFrame:, you're leaking the object that was originally alloc'd. If you're going to reassign self in this way, you should release the existing object first.
Add the
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
method in the viewController class and return YES. If this method returns YES, only then will the device support landscape orientation. Try out this extra code and see if it helps...
You can set the frame size for landscape in this method itself instead of the current method. PS: I just saw you've used a UIView instead of controller...you might want to change to controller.
This question already has answers here:
Get to UIViewController from UIView?
(29 answers)
Closed 8 years ago.
There is a way to get a view controller reference from a UIView object? I need something like this:
MyParentViewController *myParentViewController = [self.view.superview controller];
You can use the -nextResponder method to do it. According to http://developer.apple.com/library/ios/documentation/uikit/reference/UIResponder_Class/Reference/Reference.html#//apple_ref/occ/instm/UIResponder/nextResponder , "UIView implements this method by returning the UIViewController object that manages it (if it has one) or its superview (if it doesn’t)"
UIView does not have reference to UIViewController by default.You can add it to your UIView subclass and set it when you create UIView in UIViewController.
If you are looking for parent of the viewcontroller, each UIViewController has property parentViewController, but if you want to access this from UIView you need to first get to your UIViewController.
You can see example how to create reference to your UIViewController in your subclass of UIView and how/where to set it up in View Controller Programming guide for iPhone, see section Creating the View Programmatically in Defining a Custom View Controller Class, here is the example, for more details see the linked Metronome example.
- (void)loadView {
self.wantsFullScreenLayout = YES;
MetronomeView *view = [[MetronomeView alloc]
initWithFrame:[UIScreen mainScreen].applicationFrame];
view.metronomeViewController = self;
self.view = view;
self.metronomeView = view;
[view release];
}
In header:
#interface MetronomeView : UIView {
MetronomeViewController *metronomeViewController;
...
You can use
[(MyParentViewController *)[[self.view superview] nextResponder] doSomething];
You shouldn't save the reference to the view controller as it may change dynamically.
Traverse the responder chain every time you need it.
You can use the following:
UIViewController* yourViewController =
(UIViewController*)[(YourAppDelegate*)
[[UIApplication sharedApplication] delegate] viewController];
I have got my own custom UIViewController, which contains a UIScrollView with an UIImageView as it's subview. I would like to make the image to auto rotate when device orientation changes, but it doesn't seem to be working...
In the header file, I've got;
#interface MyViewController : UIViewController <UIScrollViewDelegate> {
IBOutlet UIScrollView *containerView;
UIImageView *imageView;
}
These components are initialised in the loadView function as below;
containerView = [[UIScrollView alloc] initWithFrame:frame];
NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:#"http://..."]];
UIImage *image = [[UIImage alloc] initWithData:data];
imageView = [[UIImageView alloc] initWithImage:image];
[image release];
[containerView addSubview:imageView];
And I have added the following method, assuming that's all I need to make the view auto-rotate...
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
MyViewController loads fine with the image I've specified to grab from the URL, and the shouldAutorotate... function is being called, with the correct UIInterfaceOrientation, when I flip the device too.
However, didRotateFromInterfaceOrientation method do not get called, and the image doesn't seem to rotate itself...
Could someone please point out what I need to add, or what I have done wrong here?
Thanks in advance!
This may not be the right answer for you, because you don't specify the context that the UIViewController's in, but I just found an important gotcha in the Apple documentation that explains the similar problem I'm having.
Tab bar controllers support a portrait
orientation by default and do not
rotate to a landscape orientation
unless all of the root view
controllers support such an
orientation. When a device orientation
change occurs, the tab bar controller
queries its array of view controllers.
If any one of them does not support
the orientation, the tab bar
controller does not change its
orientation.
I've noticed that there are issues when rotating a UIView that's not the first or only view as a direct child of the main window.
So if your UIView is part of a Navigation Controller or a Tab View Controller, you'll also need to override shouldAutoRotateToInterfaceOrientation on the Navigation Controller or Tab View Controller.
Also: using [UIApplication setStatusBarOrientation] helps to work around things if/when you need to do it manually.
To make this kind of thing work in my application, I had to override
- (void) didRotateFromInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
[self layoutSubviews];
}
and also layoutSubviews
- (void)layoutSubviews
{
NSLog(#"layoutSubviews called");
...recalc rects etc based on the new self.view.bounds...
}
I'm not sure that this is absolutely required, but it worked for me.
Sometimes, if you add a subview to a view, it's your responsibility to make sure that the methods are passed to the subview; a couple of days ago I wrote a short post about this. For example, if you have a UIViewController and add a UINavigationController as subview, you must add this code to the UIViewController if you want viewWillAppear:animated: to be called when UINavigationController.view appears:
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[projectNavigationController viewWillAppear:animated];
}
It might be the case that the willRotateToInterfaceOrientation and didRotateFromInterfaceOrientation method also need to be called by the superview; I am not really sure about this, but give it a try.
This is discussed in Apple Technical Q&A QA1688.
Sometimes if you stack multiple views on top of each other for some reason, the anotherController might not receive rotation event.
[myWindow addSubview:primaryViewController.view];
[myWindow addSubview:anotherController.view];
A lazy way (not a good design) to fix this is only add one subview on window, but initialize multiple controller on the app delegate. Then when you need to switch window, remove the current view and add the view you want
[self.view removeFromSuperview];
AppDelegate *dg = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[[dg window] addSubview:[[dg viewController] view]];
I just came across this having a similar problem. I have a series of view controllers/complex views, that all rotate perfectly and couldn't figure out why the new one I just added on wasn't rotating. After a LOT of trial and error, the reason was that I wasn't calling the init method (it's the standard init method) when allocating the view controller;
e.g. I was doing
m_timerViewController = [TimerViewController alloc];
instead of
m_timerViewController = [[TimerViewController alloc] init];
To expand on jonoogle's post. I had a similar error. My view has a nib and my custom init:
- (id)initWithCategory:(Category *)category inManagedObjectContext:context{
didn't include the call to init the nib.
self = [super initWithNibName:nil bundle:nil];
Adding that line made my view rotate like it is supposed to.
I copied this from this link
And it works for me.... Reason why i have added this here is to make it easy for others to find. It took me many hours to find this fix:
Make a new set of class files of the UIViewController type, go into the .h file of this class and change this line
#implementation MyTabBarController: UIViewController {}
#end
to something like this
#implementation MyTabBarController: UITabBarController{
}
Now go into the nib file and click on the UITabBarController object and go to it's identity tab, and make it Class MyTabBarController.
now in MyTabBarController.m make sure this is in it.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)io {
return YES;
}
You can probably get rid of everything else in there if you want.
just do this if you what to rotate from landscape to portrait!
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}