I use a bunch of custom segues to segue from one view controller view to another using:
[self performSegueWithIdentifier:#"createTeamAccountSegue" sender:self];
My question is, do the previous views automatically get destroyed in iOS5 and 6?
I keep having to create custom segues to go to the next view, and then create yet another new segue animation in reverse to go back to the last view. As long as they dont keep stacking up and up then this should be fine right?
EDIT: I should probably show you the general layout of what my custom UIStoryboardSegue class looks like:
- (void) perform {
UIViewController *sourceViewController = (UIViewController *) self.sourceViewController;
UIViewController *destinationViewController = (UIViewController *) self.destinationViewController;
UIView *parent = sourceViewController.view.superview;
[parent addSubview:destinationViewController.view];
[parent sendSubviewToBack:destinationViewController.view];
sourceViewController.view.layer.masksToBounds = NO;
sourceViewController.view.layer.cornerRadius = 8; // if you like rounded corners
sourceViewController.view.layer.shadowOffset = CGSizeMake(0,0);
sourceViewController.view.layer.shadowRadius = 10;
sourceViewController.view.layer.shadowOpacity = 1;
destinationViewController.view.frame = CGRectMake(0, 20, destinationViewController.view.frame.size.width, destinationViewController.view.frame.size.height);
sourceViewController.view.frame = CGRectMake(0, 20, sourceViewController.view.frame.size.width, sourceViewController.view.frame.size.height);
[UIView animateWithDuration:.3 delay:0.0 options:UIViewAnimationCurveEaseInOut animations:^
{
sourceViewController.view.frame = CGRectMake(0, parent.frame.size.height, sourceViewController.view.frame.size.width, sourceViewController.view.frame.size.height);
} completion:^(BOOL finished)
{
[sourceViewController presentViewController:destinationViewController animated:NO completion:NULL];
}];
}
If you are doing there segues in a UINavigationController then no, they aren't destroyed. To go back to one you should use [self.navigationController popViewControllerAnimated:YES];
Related
I have one UIViewController in which another viewcontroller(1) and splitviewcontroller(2) do switching via addchildviewcontroller method. So when I add splitviewcontroller it doesn't handle correct the rotations. Look at the video – https://dl.dropbox.com/u/2139277/IMG_0180.MOV.
Here is the code that does switching:
- (void)transitionFromViewController:(UIViewController *)fromViewController toViewController:(UIViewController *)toViewController
{
if (fromViewController == toViewController)
return;
// animation setup
toViewController.view.frame = self.view.bounds;
// notify
[fromViewController willMoveToParentViewController:nil];
[self addChildViewController:toViewController];
// select animation direction
UIViewAnimationOptions animation = (_contentState == ContentStateViewingMap) ? UIViewAnimationOptionTransitionCurlUp : UIViewAnimationOptionTransitionCurlDown;
// transition
ContentState previousState = _contentState;
_contentState = ContentStateAnimating;
[self transitionFromViewController:fromViewController
toViewController:toViewController
duration:0.6
options:animation | UIViewAnimationOptionCurveEaseInOut
animations:nil
completion:^(BOOL finished) {
[toViewController didMoveToParentViewController:self];
[fromViewController removeFromParentViewController];
_contentState = (previousState == ContentStateViewingMap) ? ContentStateViewingList : ContentStateViewingMap;
}];
}
AFAIK a UISplitViewController MUST be the root view controller of the window. Adding it as child view controller is not supported.
What I have:
Basically I have collection of UIViews presented in horizontal scrollView. UIScrollView have paging enabled and each item is not full screen so I can see part of previous and next view based on this.
Each view have delete button on itself.
What I need:
I need to find good idea to animate reloading UIScrollView content after removing one of the subview. As I thought about it there will be 4 different kinds of deletion:
1. deletion of last view
2. deletion of first view
3. deletion of middle view - hardest one
4. deletion of only view - easiest one, just animation of view disappearing
I need some suggestions/solutions.
Thanks,
Michal
edit:
Ok, I havent implemented it fully.
Here is reload method:
- (void)loadScrollView{
for(UIView* view in [_scrollView subviews])
{
[view removeFromSuperview];
}
CGRect frame = self.scrollView.frame;
frame.origin.x = 0;
frame.origin.y = 0;
int i = 0;
_scrollView.clipsToBounds = NO;
_scrollView.pagingEnabled = YES;
_scrollView.showsHorizontalScrollIndicator = NO;
for(MPContact* contact in self.items)
{
frame.origin.x = self.scrollView.frame.size.width*i;
MyView *view = [[[NSBundle mainBundle] loadNibNamed:#"MyView" owner:self options:nil] objectAtIndex:0];
[view setFrame:frame];
i++;
[view.nameAndSurnameLabel setText:#"view text"];
[view setDelegate:self];
[self.scrollView addSubview:view];[self.viewsArray addObject:view];
}[self.scrollView setContentSize:CGSizeMake(frame.size.width*[self.items count], frame.size.height)];}
Each MyView have delete button with delegate, delegate removes view from viewsArray and run this method for now.
I suggest you to use + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion method of UIView class. Just get your UIView that you want to delete, from UIScrollView and set view.alpha = 0 in animations block. In completion block remove this UIView from UIScrollView, using removeFromSuperView method. Setting alpha to 0 will make fade animation.
EDIT:
Iterate all your views you want to move and change it's x coordinate.
for(UIView *view in scrollview.subviews)
{
[UIView animateWithDuration:0.1 animations:^{
[view setFrame:CGRectMake(view.x-(/*HERE YOU NEED TO PUT WIDTH OF TOUR DELETING VIEW*/),view.y,view.width,view.heigh)];
}
completion:^(BOOL finished){
//remove view from superview and change your uiscrollview's content offset.
}];
}
I have a custom segue where I am trying to do the reverse of the standard "Cover Vertical" segue transition. I think this should work:
UIView *srcView = ((UIViewController *)self.sourceViewController).view;
UIView *dstView = ((UIViewController *)self.destinationViewController).view;
[dstView setFrame:CGRectMake(0, 0, srcView.window.bounds.size.width, srcView.window.bounds.size.height)];
[srcView.window insertSubview:dstView belowSubview:srcView];
[UIView animateWithDuration:0.3
animations:^{
srcView.center = CGPointMake(srcView.center.x - srcView.frame.size.width, srcView.center.y);
}
completion:^(BOOL finished){
[srcView removeFromSuperview];
}
];
The problem is the destination view shows up in portrait orientation even though every other view in the app is landscape orientation. Also, the x and y coordinates are reversed. Why is this happening?
I have set up shouldAutorotateToInterfaceOrientation in every view controller, but that didn't help. I could rotate the view with CGAffineTransformMakeRotation, but that doesn't seem like the right thing to do; coordinates would still be reversed, for one thing.
Update:
I tried using CGAffineTransformRotate to rotate the view , but it looks ridiculous. Most of the background shows up black. I don't think this is the way it's suppose to work.
Since I was not able the get the correct orientation and framing of the destination view before the controllers exchange, I did reverse the process:
save the source view as an image (see Remove custom UIStoryboardSegue with custom animation ) ;
switch the current controller [presentViewController: ...];
then, do the animation with the (now correct) destination view embedding the saved source image.
Here is the complete code :
#include <QuartzCore/QuartzCore.h>
#implementation HorizontalSwipingSegue
- (void) perform {
UIViewController *source = self.sourceViewController;
UIViewController *destination = self.destinationViewController;
UIView *sourceView = source.view;
UIView *destinationView = destination.view;
// Create a UIImageView with the contents of the source
UIGraphicsBeginImageContext(sourceView.bounds.size);
[sourceView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *sourceImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageView *sourceImageView = [[UIImageView alloc] initWithImage:sourceImage];
[[self sourceViewController] presentViewController:[self destinationViewController] animated:NO completion:NULL];
CGPoint destinationViewFinalCenter = CGPointMake(destinationView.center.x, destinationView.center.y);
CGFloat deltaX = destinationView.frame.size.width;
CGFloat deltaY = destinationView.frame.size.height;
switch (((UIViewController *)self.sourceViewController).interfaceOrientation) {
case UIDeviceOrientationPortrait:
destinationView.center = CGPointMake(destinationView.center.x - deltaX, destinationView.center.y);
sourceImageView.center = CGPointMake(sourceImageView.center.x + deltaX, sourceImageView.center.y);
break;
case UIDeviceOrientationPortraitUpsideDown:
destinationView.center = CGPointMake(destinationView.center.x + deltaX, destinationView.center.y);
sourceImageView.center = CGPointMake(sourceImageView.center.x + deltaX, sourceImageView.center.y);
break;
case UIDeviceOrientationLandscapeLeft:
destinationView.center = CGPointMake(destinationView.center.x, destinationView.center.y - deltaY);
sourceImageView.center = CGPointMake(sourceImageView.center.x + deltaY, sourceImageView.center.y);
break;
case UIDeviceOrientationLandscapeRight:
destinationView.center = CGPointMake(destinationView.center.x, destinationView.center.y + deltaY);
sourceImageView.center = CGPointMake(sourceImageView.center.x + deltaY, sourceImageView.center.y);
break;
}
[destinationView addSubview:sourceImageView];
[UIView animateWithDuration:0.6f
animations:^{
destinationView.center = destinationViewFinalCenter;
}
completion:^(BOOL finished){
[sourceImageView removeFromSuperview];
}];
}
#end
UPDATED ANSWER:
Make sure you are setting your dstView's frame correctly. I think you'll have better luck using:
dstView.frame = srcView.frame;
instead of:
[dstView setFrame:CGRectMake(0, 0, srcView.window.bounds.size.width, srcView.window.bounds.size.height)];
the bounds property does not react to changes in orientation the same way frame does.
Apparently, it was much easier than I thought to do the segue I wanted. Here's is what worked:
- (void)perform {
UIViewController *src = (UIViewController *)self.sourceViewController;
[src dismissViewControllerAnimated:YES completion:^(void){ [src.view removeFromSuperview]; }];
}
Hopefully this helps someone else.
Replace
[srcView insertSubview:dstView belowSubview:srcView];
with
[srcView insertSubview:dstView atIndex:0];
If you are just adding another view controller's view to your view hierarchy, that view controller is not going to get any information about the orientation of the device, so it will present the view in its default configuration. You need to add the view controller into the view controller hierarchy as well, using the containment methods described here. You also need to remove it from the hierarchy when done.
There are also several good WWDC talks on the subject, one from 2011 called "Implementing view controller containment" and one from this year, the evolution of view controllers.
I have a UIButton which fires a target action causing one view to transition to another on touchupinside.
When this happens the I also change the button's state to selected but the (different) background image for the selected state doesn't actually draw until the UIView transition is complete (or sometimes it also seems to transition with the UIView transition.)
How can I force the button to redraw the new background image before starting the view transition?
The code that runs on UIControlEventTouchUpInside:
RhSubTab *activeTab;
for(RhSubTab *tab in self.tabViews.copy) {
tab.selected = NO;
[self.view bringSubviewToFront:tab];
if(tab.tag == type) activeTab = tab;
}
[self.view bringSubviewToFront:activeTab];
[activeTab setSelected:YES];
UIView *oldView;
UIView *newView;
for(UIView *view in self.contentViews.copy) {
if([self.view.subviews containsObject:view]) {
oldView = view;
}
if(view.tag == type) {
newView = view;
}
}
if(!oldView) [self.view addSubview:newView];
else [UIView transitionFromView:oldView toView:newView duration:0.5 options:(UIViewAnimationOptionTransitionCrossDissolve|UIViewAnimationCurveEaseInOut) completion:nil];
And the custom (RhSubTab) button class:
- (id)initWithCoder:(NSCoder *)aDecoder
{
self = [super initWithCoder:aDecoder];
if(self) {
[self setBackgroundImage:[[UIImage imageNamed:#"SubContentTabBg.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 9, 0, 40)] forState:UIControlStateNormal];
[self setBackgroundImage:[[UIImage imageNamed:#"SubContentTabBg-selected.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 9, 0, 40)] forState:UIControlStateSelected];
}
return self;
}
Try breaking out the second part of your method (after setting the button to the selected state) into a second method.
Then use performSelector:withObject:afterDelay: to call that second method
So your method might look like this:
RhSubTab *activeTab;
for(RhSubTab *tab in self.tabViews.copy) {
tab.selected = NO;
[self.view bringSubviewToFront:tab];
if(tab.tag == type) activeTab = tab;
}
[self.view bringSubviewToFront:activeTab];
[activeTab setSelected:YES];
[self performSelector: #selector(doTransition) withObject: nil afterDelay: 0];
And your second method might look like this:
- (void) doTransition;
{
UIView *oldView;
UIView *newView;
for(UIView *view in self.contentViews.copy) {
if([self.view.subviews containsObject:view]) {
oldView = view;
}
if(view.tag == type) {
newView = view;
}
}
if(!oldView) [self.view addSubview:newView];
else [UIView transitionFromView: oldView
toView:newView duration:0.5
options: (UIViewAnimationOptionTransitionCrossDissolve|UIViewAnimationCurveEaseInOut)
completion:nil];
}
Even with a delay value of 0, the performSelector:withObject:afterDelay: returns immediately, and doesn't trigger the specified method until the next path through the event loop, after checking for user events, processing screen updates, etc.
If you want the transition to wait until the button change is complete, you might want to add a small non-zero delay value.
The method performSelector:withObject:afterDelay: will let you pass 0 or 1 objects as parameters. At a glance, it did not look like the second half of your transition method needed any parameters.
Try using UIButton control state highlighted instead along with your selected button.
I currently show a modal UIViewController in the formSheet style that was presented with the coverVertical animation. I am trying to present another modal UIViewController from it, using currentContext for the presentation style and flipHorizontal for the animation style. It does work, but there is a solid white white background behind the flip as it occurs. Any advice on how to successfully present another formsheet modal UIViewController using the flipHorizontal style from a pre-existing modal UIViewController in the formSheet style would be appreciated please! Thanks
Code:
// Loading of first modalVC
- (void)showModalVC {
Modal1VC *modal1VC = [[Modal1VC alloc] init];
modal1VC.modalPresentationStyle = UIModalPresentationFormSheet;
modal1VC.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:modal1VC animated:YES];
[modal1VC release];
modal1VC.view.superview.bounds = CGRectMake(0, 0, 400, 400);
}
// Loading of second modalVC in Modal1VC
- (void)buttonTapped:(id)sender {
UIViewController *modal2VC = [[UIViewController alloc] init];
modal2VC.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
modal2VC.modalPresentationStyle = UIModalPresentationCurrentContext;
modal2VC.view.backgroundColor = [UIColor greenColor];
[self presentModalViewController:modal2VC animated:YES];
[modal2VC release];
modal2VC.view.superview.bounds = CGRectMake(0, 0, 400, 400);
}
UIViewController *presentingViewController = //allocate your VC
[modalViewController setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
UIViewController *modalViewController = //your modal VC
[presentingViewController presentModalViewController:modalViewController animated:YES];
This is all the code you need ;)
It sounds like your transition is working, but the white background shown on the flip transition is the problem?
During the flip transition, the white background that is shown is actually the window. You can change the color that is shown by setting the backgroundColor property of window in the AppDelegate.
That would seem to be a limitation of presentModalViewController:animated:.
Instead of [self presentModalViewController:modal2VC animated:YES], you may be able to get the effect you want using UIView animations. Perhaps something like this:
[UIView transitionWithView:self.view.window
duration:0.3
options:UIViewAnimationOptionTransitionFlipFromRight
animations:^{
[self presentModalViewController:modal2VC animated:NO];
} completion:NULL];