i've a problem. Serius problem. -.-'' I've an app ViewBased, with MainView and FlipsideView. When i tap on the info button the FlipsideView will appears. But when i tap Done button, sometimes, the app terminates with “EXC_BAD_ACCESS” and i don't know what i have to do!!! In the Flipside view i've also an iAd banner, managed by this code
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];
[textView setFont:[UIFont fontWithName:#"TrebuchetMS" size:12]];
adView=[[ADBannerView alloc] initWithFrame:CGRectMake(0.0f, 460.0f, 0.0f, 0.0f)];
adView.currentContentSizeIdentifier=ADBannerContentSizeIdentifierPortrait;
[self.view addSubview:adView];
self.adView.delegate=self;
self.bannerIsVisible=NO;
UIDevice *theDevice=[UIDevice currentDevice];
NSString *iOS;
iOS=theDevice.systemVersion;
float iOS2 = [iOS floatValue];
if (iOS2>=4.0) {
self.bannerIsVisible = NO;
}
[super viewDidLoad];
}
-(void)bannerViewDidLoadAd:(ADBannerView *)banner {
if(!self.bannerIsVisible) {
[UIView beginAnimations:#"animateAdBannerOn" context:NULL];
banner.frame=CGRectOffset(banner.frame, 0, -50.0f);
[UIView commitAnimations];
self.bannerIsVisible=YES;
}
}
There's something wrong?
Don't call [super viewDidLoad]; twice.
set the environment variable NSZombieEnabled = YES and the run the code again. Then watch your crash logs. You are trying to access an already deallocated instance.
Related
I'm used to loading ViewControllers from storyboard files or xib files, so when I first tried to load one in code:
UIStoryboard *storyboard = self.storyboard;
ProfileViewController *profViewController = [storyboard instantiateViewControllerWithIdentifier:#"ProfileView"];
NSLog(#"Self View Frame: %#", NSStringFromCGSize(self.view.frame.size));
NSLog(#"ProfViewCont Frame: %#", NSStringFromCGSize(profViewController.view.frame.size));
I got the following error:
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[NSPlaceholderMutableString initWithString:]: nil argument'
What do I need to do differently assuming that my storyboard xib is loaded properly? Here is the viewDidLoad:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// add subviews
self.view.backgroundColor = [UIColor clearColor];
self.view.opaque = YES;
[UIView beginAnimations:nil context:nil];
[self.view setFrame:CGRectMake(0, 480, 320, 480)];
[UIView setAnimationDuration:0.75f];
[self.view setFrame:CGRectMake(0, 0, 320, 480)];
[UIView commitAnimations];
// Sort stat bars top to bottom (HP == 0):
statBars = [statBars
sortedArrayUsingComparator:^NSComparisonResult(id label1, id label2)
{
if ([label1 frame].origin.y < [label2 frame].origin.y)
return NSOrderedAscending;
else
return NSOrderedDescending;
}];
// Sort types left to right:
types = [types
sortedArrayUsingComparator:^NSComparisonResult(id label1, id label2)
{
if ([label1 frame].origin.x < [label2 frame].origin.x)
return NSOrderedAscending;
else
return NSOrderedDescending;
}];
[self displayInfo:currentIndex];
}
Thanks for your help!
Never mind, it turns out the error was in [self displayInfo:currentIndex] the last line in ViewDidLoad. I mistakenly thought that viewDidLoad was safely called when the ViewController was instantiated. It turns it is called much later, when I called self.view.
<_< lazy initialization, huh?
Check your ProfileViewController xib , you must have connected some wrong outlet to the file owner
I found this code to change the image when it is clicked.
in .h
#interface MyappViewController : UIViewController
{
NSDictionary *ddata;
UIImageView *firstImage;
}
#property(retain,nonatomic) IBOutlet UIImageView *firstImage;
in .m
- (void)viewDidLoad
{
[super viewDidLoad];
firstImage.userInteractionEnabled = YES;
UIPinchGestureRecognizer *pgr = [[UIPinchGestureRecognizer alloc]
initWithTarget:self action:#selector(clickHandler:)];
pgr.delegate = self;
[firstImage addGestureRecognizer:pgr];
[pgr release];
// [self clickHandler:self];
}
-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
/* destroy the transition view, set the image first */
UIImageView *transitionImageView = (UIImageView *)context;
self.firstImage.image = transitionImageView.image;
[transitionImageView removeFromSuperview];
transitionImageView = nil;
}
- (void)clickHandler:(id)sender {
/* temporary view for the animation */
NSLog(#"Click Handled ");
UIImageView *transitionImageView = [[UIImageView alloc] initWithFrame:self.firstImage.frame];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[ddata objectForKey:#"pic"]]]];
transitionImageView.image = image;
transitionImageView.alpha = 0.0f;
[self.view addSubview:transitionImageView];
[UIView beginAnimations:#"UpdateImages" context:transitionImageView];
[UIView setAnimationDuration:2.0f];
transitionImageView.alpha = 1.0f;
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
[UIView commitAnimations];
}
When I click the image nothing happens, but if I call [self clickHandler:self]; in ViewDidLoad, the image changes. My problem is that the click is not handled when I click the image.
Instead of a UIPinchGestureRecognizer you need to use a UITapGestureRecognizer. Don't forget to set things like the number of taps required and number of fingers either. The docs are very good for gesture recognizers.
Sample on GitHub
I have a strange problem.
I have Navigation-based app with two UIViewControllers and Curl effect for transition between these.
I add to bar button and add custom action:
-(IBAction)pushPage
{
NSLog(#"push page");
SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
[UIView beginAnimations:#"animation" context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.navigationController.view cache:NO];
[self.navigationController pushViewController:secondView animated:NO];
[UIView commitAnimations];
[secondView release];
}
In SecondView I have a button with action:
-(IBAction)back
{
[imageAnimationIssueAppDelegate backPage];
}
Method backPage in AppDelegate:
-(void)backPage
{
NSLog(#"backPage");
[UIView beginAnimations:#"animation" context:nil];
[UIView setAnimationDuration:0.75];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.navigationController.view cache:NO];
[self.navigationController popToRootViewControllerAnimated:NO];
[UIView commitAnimations];
}
PROBLEM:
On the RootView I have UIImageView with animation:
- (void)viewDidLoad
{
[super viewDidLoad];
animImage.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:#"1.png"],
[UIImage imageNamed:#"2.png"],
[UIImage imageNamed:#"3.png"],
[UIImage imageNamed:#"4.png"],
[UIImage imageNamed:#"3.png"],
[UIImage imageNamed:#"2.png"],
nil];
animImage.animationDuration = 0.5;
animImage.animationRepeatCount = 0;
}
I start it in viewDidAppear:
- (void)viewDidAppear:(BOOL)animated
{
NSLog(#"First view - viewDidAppear");
[super viewDidAppear:animated];
[animImage startAnimating];
}
I stop it in viewDidDisapear:
- (void)viewDidDisappear:(BOOL)animated
{
NSLog(#"First view - viewDidDisappear");
[super viewDidDisappear:animated];
[animImage stopAnimating];
}
When I back from SecondView animation is stoped! But [animImage isAnimating] say YES!
It doesn't start witout update screen - you can click to button on the bottom and see it!
Is it bug?
Animation works without custom transitions.
When I set animated:YES for push or pop view, animation works with custom transitions between views.
Why?
Is there simple way to update displaying view to start animation?
I think you should have to write
[yellowBatterfly startAnimating];
in viewDidLoad method. and change method from
viewDidAppear to viewWillAppear and
viewDidDisappear to viewWillDisappear.
Hope It will works...
I think you have to perform the animations on the view using:
[UIView commitAnimations]
I have a UIViewController that I'm using to control a "pop-up" view for viewing images throughout my application. It supports autorotation, as it automatically sizes the image to fit properly regardless of orientation. This works perfectly, but only the first time I initialize and display the view controller. When it closes, I am removing the UIView from my view hierarchy and releasing the view controller - but the next time I instantiate and add it to my view hierarchy, it stops receiving the -shouldAutorotateToInterfaceOrientation messages when the phone is rotated.
This is how I instantiate and display it:
popupVC = [[PopupVC alloc] init];
[popupVC viewWillAppear:NO];
[[[UIApplication sharedApplication] keyWindow] addSubview:popupVC.view];
[popupVC viewDidAppear:NO];
this is how I remove/release it when it's finished:
[popupVC viewWillDisappear:NO];
[popupVC.view removeFromSuperview];
[popupVC viewDidDisappear:NO];
[popupVC release];
popupVC = nil;
I've tried looping through [[UIApplication sharedApplication] keyWindow] subviews to see if somehow my popup view isn't on top, but it always is. And it has a different address each time so I do know that it's a different instance of the view controller class.
As requested, here is the complete loadView method from PopupVC:
- (void)loadView {
UIView *myView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];
myView.backgroundColor = self.overlayColor;
myView.autoresizesSubviews = NO;
myView.hidden = YES;
myView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
self.view = myView;
[myView release];
_isVisible = NO;
UIView *myMaskView = [[UIView alloc] initWithFrame:self.view.bounds];
myMaskView.backgroundColor = [UIColor clearColor];
myMaskView.clipsToBounds = YES;
myMaskView.hidden = YES;
myMaskView.autoresizesSubviews = NO;
myMaskView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:myMaskView];
self.imageMaskView = myMaskView;
[myMaskView release];
UIImageView *myImageView = [[UIImageView alloc] initWithFrame:CGRectZero];
myImageView.center = self.view.center;
myImageView.hidden = NO;
myImageView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleHeight;
[self.imageMaskView addSubview:myImageView];
self.imageView = myImageView;
[myImageView release];
UIButton *myImageButton = [UIButton buttonWithType:UIButtonTypeCustom];
myImageButton.frame = self.view.frame;
myImageButton.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleHeight;
[myImageButton addTarget:self action:#selector(clickImage:) forControlEvents:UIControlEventTouchUpInside];
[self.imageMaskView addSubview:myImageButton];
self.imageButton = myImageButton;
UIActivityIndicatorView *myActivityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
myActivityView.hidden = YES;
[self.view addSubview:myActivityView];
myActivityView.center = self.view.center;
self.activityView = myActivityView;
[myActivityView release];
}
The shouldAutorotateToInterfaceOrientation handler isn't the place for custom code to respond to rotation events. It's purpose is just to tell the OS that your view controller can rotate. If you want to have custom code to handle the rotation events you should overide - didRotateFromInterfaceOrientation or one of the other similar callback methods depending on your needs:
willRotateToInterfaceOrientation:duration:
willAnimateRotationToInterfaceOrientation:duration:
didRotateFromInterfaceOrientation:
willAnimateFirstHalfOfRotationToInterfaceOrientation:duration:
didAnimateFirstHalfOfRotationToInterfaceOrientation:
willAnimateSecondHalfOfRotationFromInterfaceOrientation:duration:
See Autorotating Views in the developer docs.
I think that might be a bug in the new OS 3.0. A workaround to this would be to use NSNotificationCenter after turning on beginGeneratingDeviceOrientationNotifications.
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(receivedRotate:) name:UIDeviceOrientationDidChangeNotification object:nil];
}
-(void) receivedRotate: (NSNotification *) notification {
DebugLog(#"ORIENTATION CHANGE");
UIDeviceOrientation interfaceOrientation = [[UIDevice currentDevice] orientation];
if(interfaceOrientation == UIDeviceOrientationPortrait) {
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(0));
self.view.bounds = CGRectMake(0, 0, 320, 480);
}
else if(interfaceOrientation == UIDeviceOrientationLandscapeLeft) {
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(90));
self.view.bounds = CGRectMake(0, 0, 480, 320);
}
else if(interfaceOrientation == UIDeviceOrientationLandscapeRight) {
self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(-90));
self.view.bounds = CGRectMake(0, 0, 480, 320);
}
}
My problem is that I get the rotation event for my rootViewController, but as soon as I launch my second viewController, it won't get any signals except motion (shaking) and touch. Is that the same issue as the original post -- it is certainly similiar??
I followed-up with above recommendation and I don't have the selector coded correctly so it throws an exception as soon as I try to rotate. Meanwhile, I found this other discussion on the web which confirms that the problem was introduced in 3.0.
link text
I have a resizing issue when rotating a view controller that has two views which I switch between using the flip animation.
The problem appears if i do the following steps:
Rotate the device when viewing the tableview.
Click the info button.
Rotate the device (infoView appears stretched).
Click on info button (tableview appears stretched)
It appears that the view that is not added to the superview is not resizing correctly, since it was not part of the composite views when the device was rotated.. Is there any way to get this view auto resized correctly?
Below is a code sample
- (void)viewDidLoad {
[super viewDidLoad];
//background image
backgroundImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"bg-app.png"]];
backgroundImageView.autoresizingMask = (UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight);
[self.view addSubview: backgroundImageView];
[backgroundImageView release];
//infoView
aboutImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"About.png"]];
aboutImageView.autoresizingMask = (UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight);
//tableView
self.tableView = [[[UITableView alloc ] initWithFrame:[[UIScreen mainScreen] bounds] style:UITableViewStylePlain] autorelease ];
//set the rowHeight once for performance reasons.
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
self.tableView.rowHeight = 75;
self.tableView.backgroundColor = [UIColor clearColor];
self.tableView.autoresizingMask = (UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight);
self.tableView.delegate = self;
self.tableView.dataSource = self;
self.tableView.autoresizesSubviews = YES;
//set the rowHeight once for performance reasons.
[self.view addSubview: tableView];
//[tableView release];
[self.view setAutoresizingMask:UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth];//for resizing on rotation
//info button
UIButton * infoDarkButtonType = [[UIButton buttonWithType:UIButtonTypeInfoLight] retain];
infoDarkButtonType.frame = CGRectMake(0.0, 0.0, 25.0, 25.0);
infoDarkButtonType.backgroundColor = [UIColor clearColor];
[infoDarkButtonType addTarget:self action:#selector(infoAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *buttonInfo = [[UIBarButtonItem alloc] initWithCustomView:infoDarkButtonType];
self.navigationItem.rightBarButtonItem = buttonInfo;
[infoDarkButtonType release];
self.navigationItem.rightBarButtonItem = buttonInfo;
[buttonInfo release];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return YES;
}
- (void)infoAction:(id)sender{
NSLog(#"Clicked on the info button");
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.75]; /* Sub. duration here */
UIView *superview;
if ((superview = [tableView superview])) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:superview cache:YES];
[tableView removeFromSuperview];
[superview addSubview:aboutImageView];
} else if ((superview = [aboutImageView superview])) {
[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:superview cache:YES];
[aboutImageView removeFromSuperview];
[superview addSubview:tableView];
}
[UIView commitAnimations];
}
Thanks
Try putting the code in viewWillAppear:animated. It's called every time your view will appear. View did load is called once.