I have this class:
Header:
#interface vcMain : NSWindowController {
IBOutlet NSView *scroll;
}
#property (retain) IBOutlet NSView *scroll;
-(IBAction)test:(id)sender;
#end
Source:
#implementation vcMain
#synthesize scroll;
-(IBAction)test:(id)sender {
vItem *item = [[vItem alloc] initWithNibName:#"vItem" bundle:nil];
NSView *view = [item view];
[view setFrame:NSMakeRect(0, 0, 300, 600)];
[view setAutoresizingMask:( NSViewHeightSizable) ];
[scroll addSubview:view];
}
#end
*scroll is a Custom View in a Bordered Scroll View in the Content View of a Window.
vItem is a ViewController subclass with some things on it to identify its position.
Problem: When resizing my vcMain from the default 300x600 to 150x300, I don't see any scrollbars.
What am I doing wrong?
Tom
Solved
It was simple, actually. Resizing the view apparently also resized the subview so it wasn't neccessary to show the scrollbars - however, as the elements in the subview didn't move, I didn't notice that the subview was resizing.
Solved by correcting the resizing of the view.
Related
I have a UIImageView with property, it's connected in the storyboard and in viewDidLoad I have set it's image. I first create an image then assign it to the image of the UIImageView.
-(void)viewDidLoad {
[super viewDidLoad];
UIImage *image = [[UIImage imageNamed:#"image"]resizeableImageWithCapInsets:UIEdgeInsetsMake(28.5, 5, 6.5, 5)];
[self.imageView setImage:image];
}
I've made sure numerous times that the UIImageView is connected in the IB and it's showing up as connected. I have a UICollectionView over it, but it doesn't extend high enough to cover it all and the UICollectionView background color is set to clear. Thanks in advance for the help.
I suppose you added the IBOutlet UIImageView * imageView in your .h and then linked it in the Interface Builder, BUT did you add the property of the imageView? Like this:
#property (nonatomic, retain) IBOutlet UIImageView * imageView;
And then in your .m file, under the #implementation you need to add #synthesize imageView;
and set the image to your imageView using only: [imageView setImage:image]; (without the self.).
(You can also skip the #synthesize and just use [_imageView setImage:image];)
The #property allows you to edit the properties of the object, like backgroundColor, alpha, image, etc.
Okay, so i'm using a UIScrollView in my app. I have placed the scrollview in a viewcontroller in story board. I have several buttons there and a few labels. But when I try to scroll down to the buttons at the bottom, the scrollview just bounces back to the top. This is the code I have used:
In viewcontroller.h:
#interface ViewController : UIViewController{
IBOutlet UIScrollView *hovscroll;
}
#end
In viewcontroller.m:
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[hovscroll setScrollEnabled:YES];
[hovscroll setContentSize:CGSizeMake(320, 1500) ];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#end
You need to disable paging. There are (at least) two ways of doing this:
In the storyboard, select the UIScrollView component, and un-tick "Paging Enabled" in the "Attributes Inspector."
In the code, by using:
scrollView.pagingEnabled = FALSE;
You need to specify the size of the scrollable area by setting the contentSize property of your scroll view like this.
[scrollview setContentSize:CGSizeMake(320, 1000)];
So I've a button with a IBAction heading to another ViewController by its initWithNibName method. Everything is embedded in a NavigationController.
I also created a .xib for this ViewController, here is a quick screenshot :
Here is my code :
.h
#interface ModeEmploiController : UIViewController
{
IBOutlet UIScrollView *scrollView;
UITextView *vueOffres, *vueInfos, *vueGrilles;
}
#property (nonatomic, retain) IBOutlet UIScrollView *scrollView;
.m
#implementation ModeEmploiController
#synthesize scrollView;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self)
{
[scrollView setScrollEnabled:YES];
[scrollView setContentSize:CGSizeMake(320, 529)];
// Here I define vueOffres, vueInfos and vueGrilles and for each of them :
[self.view addSubview:vueGrilles/vueInfos/vueOffres];
}
}
But when I run my app, my scroll isn't enabled and I don't have the navigation bar of my navigation controller. What's happening?
add another view inside the ScrollView i called mine content view. the do
self.scrollView.contentSize = self.contentView.frame.size;
for the navigation bar you need to have a uinavigation controller and make your controller the rootviewcontroller of the navigation controller. like this
-(IBAction)MyButton:(id)sender
{
MyViewController *controller = [[MyViewController alloc] initWithNibName:#"MyView" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller];
[self.navigationController presentModalViewController:navController animated:YES];
}
Remove your ModeEmploiController from xib, but keep its child View and ScrollView.
now click on File's Owner and put ModeEmploiController from Identity inspector in right panel.
Now right click on File's Owner and connect property of view to View and scrollView to ScrollView.
Your initialization code is in the wrong method.
Since you are using Storyboards, your view controller is being unarchived from a nib file. The correct place to initialize the controls is in the awakeFromNib method.
Make sure that you have set up an IBOutlet property for your scroll view and hooked it up in the Storyboard, and then:
- (void)awakeFromNib {
[self.scrollView setScrollEnabled:YES];
[self.scrollView setContentSize:CGSizeMake(320, 529)];
// Here I define vueOffres, vueInfos and vueGrilles and for each of them :
[self.view addSubview:vueGrilles/vueInfos/vueOffres];
}
That just leaves the problem of the subview that you are adding. What is vueGrilles/vueInfos/vueOffres? You should create this view properly within the viewDidLoad method and add it as a subview there instead of in this initialiser.
This is my code where I'm trying to create a subView... I'm using XCode4 with StoryBoards. The app is crashing on the 2nd line where it is allocating subView with EXC_BAD_ACCESS. vFrame has valid content. What is wrong with this? (I'm using XCode4 with Storyboards, btw).
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect vFrame = CGRectMake(60,100,200,200);
subView = [[UIView alloc] initWithFrame:vFrame];
subView.backgroundColor = [UIColor redColor];
[self.view addSubview: subView];
}
UPDATE: definition for subView:
#interface PreferencesViewController : UIViewController {
UIView *subView;
}
#property (nonatomic, retain) UIView *subView;
#end
That really should work. Was your view controller (PreferencesViewController) properly alloc'd and init'd? Did you #synthesize your subview?
Although it shouldn't matter, you could try using floats for the CGRect (add a .0 to the end of each).
Try moving your sub view instantiation code to the method viewWillAppear of your main view. This guarantees everything has been initialized.
The problem was the UIViewController was farkled...don't know how, but once it was replaced, it worked like a champ! Thank you all for your responses...
I'm sure I'm overlooking the obvious as I've got countless working buttons...but...for whatever reason this one is not cooperating...
I've added a UIButton (Rounded Rect) to a UIView subclass (DialogView) which is a subview of my view controller's view. This subview is created almost entirely in IB. I've wired up the button to (IBAction)okButtonPressed:(id)sender in IB to Touch Up Inside and created a corresponding method in DialogView. However when I "touch" this button it doesn't trigger the method. userInteractionEnabled is true for the VC's view, DialogView and the UIButton.
Thinking maybe initWithCoder had to do some frame manipulation or something I added the following which successfully logs to console.
- (id)initWithCoder:(NSCoder *)decoder {
if (self = [super initWithCoder:decoder]) {
NSLog(#"DialogView initWithCoder called");
}
return self;
}
In further exploration I wired up an IBOutlet to the button and then if I try to change the titleLabel from the view controller I notice that it get's severely truncated. Default text of say "Press Me!" set in IB displays fine when view is first drawn. But if I change the text...
self.DialogView.okButton.titleLabel.text = #"Not Working";
...it gets truncated to "N..."
Dunno if this is related. Probably...
Anyone see what I've screwed up here?
Edit (adding code related to showing UIButton):
From the View Controller:
self.DialogView = [[[NSBundle mainBundle] loadNibNamed:#"DialogView" owner:self options:nil] objectAtIndex:0];;
self.DialogView.myVC = self;
self.DialogView.backgroundColor = [UIColor clearColor];
self.DialogView.center = CGPointMake(self.view.frame.size.width / 2, self.view.frame.size.height / 2);
self.DialogView.nameLabel.text = loan.fullName;
self.DialogView.noteLabel.text = loan.summaryOfLoan;
self.DialogView.amountLabel.text = [currencyFormatter stringFromNumber:loan.originalAmount];
self.DialogView.alpha = 0.0;
[self.view addSubview:DialogView];
The UILabels all displaying as expected. As is the problem UIButton. I can see it I just can't interact with it!?!
DialogView's interface:
#class MyViewController;
#interface DialogView : UIView {
IBOutlet UILabel *nameLabel, *noteLabel, *amountLabel;
IBOutlet UIImageView *arrowView;
IBOutlet UIButton *okButton;
MyViewController *myVC;
}
#property (nonatomic, retain) UILabel *nameLabel, *noteLabel, *amountLabel;
#property (nonatomic, retain) UIImageView *arrowView;
#property (nonatomic, assign) MyViewController *myVC;
#property (nonatomic, retain) UIButton *okButton;
- (IBAction)okButtonPressed:(id)sender;
#end
And DialogView's implementation:
#import "DialogView.h"
#import "MyViewController.h"
#implementation DialogView
#synthesize nameLabel, noteLabel, amountLabel, arrowView, okButton;
#synthesize myVC;
- (void)dealloc {
[nameLabel release];
[noteLabel release];
[amountLabel release];
[arrowView release];
[okButton release];
[super dealloc];
}
- (id)initWithFrame:(CGRect)frame {
if (self = [super initWithFrame:frame]) {
// Initialization code
}
return self;
}
- (id)initWithCoder:(NSCoder *)decoder {
if (self = [super initWithCoder:decoder]) {
NSLog(#"DialogView initWithCoder called");
}
return self;
}
- (IBAction)okButtonPressed:(id)sender {
NSLog(#"pressed DialogView OK button");
[self.myVC.navigationController popViewControllerAnimated:YES];
}
- (void)drawRect:(CGRect)rect {
// Drawing code
}
#end
I thought that we should use -setTitle:forState: in order to set button's title ?
An other thought, did you check that the button's frame is not CGRectZero ? And by the way, all the frames for the view in the hierarchy ? And check that one superview in the hierarchy is not user interaction disabled ?
And, I think imageView does not respond to touches, do you have one in your code ?
I was just having more or less the same problem and I found that my containing view did not have "User Interaction Enabled".
Hope this helps.
Do you maybe have two buttons on top of one another? Change the IB project window to the detail view and see if your view has more buttons than you are expecting. Maybe you've wired up a button that's not actually getting the press you're expecting.