My app currently has a search bar and generates a holder view of results dropping down from the search bar. However, the ResultContainerView is behind my other Views. I am wondering how to bring that search bar container view to the top of the UIView hierarchy. I tried using [super bringSubviewToFront:_searchResultsHolderView];
but that did not work. Here is my method for when the searchbar is tapped.
- (void)_expandSearchResults
{
CCLogVerbose (#"");
_searchResultsHolderView.alpha = 0.0;
_searchResultsHolderView.hidden = NO;
[_searchResultsHolderView setFrameHeight:10];
[UIView beginAnimations:#"expandSearchResults" context:nil];
[UIView setAnimationDuration:kAnimationDuration_SearchResults];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector (searchAnimationDidStop:finished:context:)];
_searchResultsHolderView.alpha = 1.0;
[_searchResultsHolderView setFrameHeight:_searchResultsHt];
[super bringSubviewToFront:_searchResultsHolderView];
[UIView commitAnimations]; // start animation
}
And this is my reloadData method:
- (void)_reloadSearchResults:(NSString *)searchS
{
CCLogVerbose (#"");
if ([searchS length] == 0) {
_searchResults = nil;
[_searchResultsTableView reloadData];
return;
}
NSAssert (self.patientService != nil, #"The Patient Service is invalid");
[self.patientService searchPatients:searchS
expandType:AllPatientExpansions
success:^(NSArray *list) {
_searchResults = list;
[_searchResultsTableView reloadData];
}
failure:^(NSError *error) {
CCLogDebug (#"Failed: %#", error);
}];
}
[self.superview bringSubviewToFront:self];
[self bringSubviewToFront:_searchResultsHolderView];
First you need to bring self to the top of the stack. After that you can call bringSubViewToFront and bring your _searchResultsHolderView to the front.
I have a little problem with iAd. I used the code shown below. It works well, but only at first View, when I switch to another View, iAd does not show (although I used the exact same code). Do you know where is the problem, please? Thank you for your help.
The code that I used:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
_adBanner = [[ADBannerView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height, 320, 50)];
_adBanner.delegate = self;
}
- (void)bannerViewDidLoadAd:(ADBannerView *)banner
{
if (!_bannerIsVisible)
{
if (_adBanner.superview == nil)
{
[self.view addSubview:_adBanner];
}
[UIView beginAnimations:#"animateAdBannerOn" context:NULL];
banner.frame = CGRectOffset(banner.frame, 0, -banner.frame.size.height);
[UIView commitAnimations];
_bannerIsVisible = YES;
}
}
- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
NSLog(#"Failed to retrieve ad");
if (_bannerIsVisible)
{
[UIView beginAnimations:#"animateAdBannerOff" context:NULL];
banner.frame = CGRectOffset(banner.frame, 0, banner.frame.size.height);
[UIView commitAnimations];
_bannerIsVisible = NO;
}
}
I have a iPad app with 2 view controllers; 1st one is for the UI, the 2nd for a view which displays help from a UIWebView. When I go back and forth 10 times between view controllers, I get the message in the title above on exactly the 10th time returning to the first VC.
This is my code in VC #1:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
adView = [[ADBannerView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height - 50, 320, 50)];
_adBanner = [[ADBannerView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height, 320, 50)];
_adBanner.delegate = self;
[self.view addSubview:adView];
}
- (void) viewWillDisappear:(BOOL)animated {
[_adBanner removeFromSuperview];
_adBanner.delegate = nil;
_adBanner = nil;
}
- (void)bannerViewDidLoadAd:(ADBannerView *)banner {
if (!_bannerIsVisible) {
// If banner isn't part of view hierarchy, add it
if (_adBanner.superview == nil)
[self.view addSubview:_adBanner];
// }
[UIView beginAnimations:#"animateAdBannerOn" context:NULL];
// Assumes the banner view is just off the bottom of the screen.
banner.frame = CGRectOffset(banner.frame, 0, -banner.frame.size.height);
[UIView commitAnimations];
_bannerIsVisible = YES;
}
}
- (void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error {
NSLog(#"Failed to retrieve ad");
if (_bannerIsVisible) {
[UIView beginAnimations:#"animateAdBannerOff" context:NULL];
// Assumes the banner view is placed at the bottom of the screen.
banner.frame = CGRectOffset(banner.frame, 0, banner.frame.size.height);
[UIView commitAnimations];
_bannerIsVisible = NO;
}
}
I know why, just don't know how to fix it. Can someone please help me with this?
You create an instance of ADBannerView in viewDidAppear and assign it to adView You don't appear do anything with this and more relevantly don't discard it in viewWillDisappear so each time you pop back to this view controller the previous instance is orphaned when you cycle through viewDidAppear.
Also possibly another issue is that you are not calling [super viewWillDisappear:] in your viewWillDisappear method.
I try to implement a interactive custom modal UIViewController transition using the new iOS7 APIs. Everything is working as desired as long as I don't use the new
+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
method for animating the transition. It is working fine if I invoke the transition via a button. The problem occurs when the transition is interactive, driven by a GestureRecognzier. If I release my finger the animation is immediately cut of and won't finish. The same code is working if I use
animateWithDuration:delay:options:animations:completion:
instead.
Here is the code which animates the transition:
- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext {
UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
CGRect fullFrame = transitionContext.containerView.frame;
if (!self.dismissal) {
[transitionContext.containerView addSubview:fromViewController.view];
[transitionContext.containerView addSubview:toViewController.view];
fromViewController.view.frame = fullFrame;
toViewController.view.frame = CGRectMake(0, fullFrame.size.height, 0, 0);
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0 usingSpringWithDamping:0.5 initialSpringVelocity:0.5 options:UIViewAnimationOptionTransitionNone animations:^{
//animation
toViewController.view.frame = CGRectMake(0,0, fullFrame.size.width, fullFrame.size.height);
} completion:^(BOOL finished) {
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
} else {
[transitionContext.containerView addSubview:toViewController.view];
[transitionContext.containerView addSubview:fromViewController.view];
fromViewController.view.frame = fullFrame;
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0 usingSpringWithDamping:.5 initialSpringVelocity:.5 options:0 animations:^{
fromViewController.view.frame = CGRectMake(0, fullFrame.size.height, fullFrame.size.width, fullFrame.size.height);
} completion:^(BOOL finished) {
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
//This is working fine
// [UIView animateWithDuration:[self transitionDuration:transitionContext]/2 animations:^{
// fromViewController.view.frame = CGRectMake(0, fullFrame.size.height, fullFrame.size.width, fullFrame.size.height);
// } completion:^(BOOL finished) {
// [transitionContext completeTransition:![transitionContext transitionWasCancelled]];
// }];
}
This is the code behind the gesture recogniser:
#pragma mark - Gesture recognition
- (void)handlePan:(UIScreenEdgePanGestureRecognizer *)pgr
{
CGPoint translation = [pgr translationInView:pgr.view];
CGFloat percentage = fabs(translation.x / CGRectGetWidth(pgr.view.frame));
switch (pgr.state) {
case UIGestureRecognizerStateBegan:
self.interactionInProgress = YES;
[self.respondingVC proceedToNextViewController];
break;
case UIGestureRecognizerStateChanged: {
[self updateInteractiveTransition:percentage];
break;
}
case UIGestureRecognizerStateEnded:
if(percentage < 0.5) {
[self cancelInteractiveTransition];
} else {
[self finishInteractiveTransition];
}
self.interactionInProgress = NO;
break;
case UIGestureRecognizerStateCancelled:
[self cancelInteractiveTransition];
self.interactionInProgress = NO;
default:
break;
}
}
It looks like you're using UIPercentDrivenInteractiveTransition. When you call finishInteractiveTransition, UIPercentDriventInteractiveTransition does not call animateTransition.
You should override both updateInteractiveTransition and finishInteractiveTransition to update your view states.
All my attempts to begin an animation block inside an interactive transition have ended in failure. I finally at least got it to finish the animation by calling [self updateInteractiveTransition:1] in finishInteractiveTransition. Otherwise the views will be left in the state they were in and the transition never completes or the transition is treated as completed but your views are in strange places.
Edit: I awarded the bounty to john since he put a lot of effort into his answer, and would get it anyways, but there's still no working solution. I am still looking for an answer, if someone knows how to do this it'd be greatly appreciated.
I want to add a "maximize" button to my app that hides the navigation and tab bar. The navbar and tabbar should slide in/out smoothly, and the inner/content view should also expand and shrink at the same rate as the navbar and tabbar.
I used [self.navigationController setNavigationBarHidden: YES/NO animated: YES]; for the navbar and found this thread How to hide uitabbarcontroller for hiding the tabbar.
UITabBar class extension:
- (void) setTabBarHidden:(BOOL)hidden animated:(BOOL)animated {
CGRect screenRect = [[UIScreen mainScreen] bounds];
float screenHeight = screenRect.size.height;
if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation)) {
screenHeight = screenRect.size.width;
}
if (!hidden) {
screenHeight -= self.tabBar.frame.size.height;
}
[UIView animateWithDuration: (animated ? UINavigationControllerHideShowBarDuration : 0) animations: ^{
for (UIView* each in self.view.subviews) {
if (each == self.tabBar) {
[each setFrame: CGRectMake(each.frame.origin.x, screenHeight, each.frame.size.width, each.frame.size.height)];
} else {
[each setFrame: CGRectMake(each.frame.origin.x, each.frame.origin.y, each.frame.size.width, screenHeight)];
}
}
} completion: ^(BOOL finished) {
NSLog(#"Animation finished %d", finished);
}];
}
The problem is when I use the two at the same time (hiding/showing the nav and tab bar), it's not clean. If the navbar comes first, anything anchored to the bottom jumps (see example below), and if the tabbar comes first, the top jumps.
Example: I position the UIButton in the bottom right and set its autoresizing mask
resizeButton.frame = CGRectMake(self.view.bounds.size.width - 50, self.view.bounds.size.height - 100, 32, 32); // hardcoded just for testing purposes
resizeButton.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleTopMargin;
But when the navbar and tabbar are minimized the UIButton jumps between the two states (doesn't slide along with the tab bar). However, if I change it to attach to the top right, it slides perfectly with the nav bar.
Does anyone know how to solve this?
Edit:
This is the closet and most elegant solution I have so far (just trying to get a working concept):
[UIView animateWithDuration: UINavigationControllerHideShowBarDuration animations: ^{
if (self.isMaximized) {
self.tabBarController.view.frame = CGRectMake(0, 20, screenRect.size.width, screenRect.size.height + 49 - 20);
[self.navigationController setNavigationBarHidden:YES animated:YES];
} else {
self.tabBarController.view.frame = CGRectMake(0, 20, screenRect.size.width, screenRect.size.height - 20);
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
} completion: ^(BOOL finished) {
NSLog(#"Frame done: %#", NSStringFromCGRect(self.view.frame));
return;
}];
On maximizing:
Slides the navbar up, and slides the tabbar down, at the same time
The top of the inner/content view slides up, and the bottom of this view jumps down
On minimizing:
Slides the navbar down, and slides the tabbar up, at the same time
The top of the inner/content view slides down properly, but the bottom jumps to the final value, leaving whitespace which is then covered by the sliding tabbar
If I rearange the order of the minimizing-animations (so the navbar animatino is called first), then the top in the inner/content view jumps
the solution i use should eliminate the jump problem you see.
this solution is derived from an Objective-C category found Carlos Oliva's github page, and while the copyright in that code is "all rights reserved", i wrote him and he provided permission for use.
my category code varies only slightly from his code. also, find below the category code the invocation code that i use in my app.
from UITabBarController+HideTabBar.m
// the self.view.frame.size.height can't be used directly in isTabBarHidden or
// in setTabBarHidden:animated: because the value may be the rect with a transform.
//
// further, an attempt to use CGSizeApplyAffineTransform() doesn't work because the
// value can produce a negative height.
// cf. http://lists.apple.com/archives/quartz-dev/2007/Aug/msg00047.html
//
// the crux is that CGRects are normalized, CGSizes are not.
- (BOOL)isTabBarHidden {
CGRect viewFrame = CGRectApplyAffineTransform(self.view.frame, self.view.transform);
CGRect tabBarFrame = self.tabBar.frame;
return tabBarFrame.origin.y >= viewFrame.size.height;
}
- (void)setTabBarHidden:(BOOL)hidden {
[self setTabBarHidden:hidden animated:NO];
}
- (void)setTabBarHidden:(BOOL)hidden animated:(BOOL)animated {
BOOL isHidden = self.tabBarHidden;
if (hidden == isHidden)
return;
UIView* transitionView = [self.view.subviews objectAtIndex:0];
if (!transitionView)
{
#if DEBUG
NSLog(#"could not get the container view!");
#endif
return;
}
CGRect viewFrame = CGRectApplyAffineTransform(self.view.frame, self.view.transform);
CGRect tabBarFrame = self.tabBar.frame;
CGRect containerFrame = transitionView.frame;
tabBarFrame.origin.y = viewFrame.size.height - (hidden ? 0 : tabBarFrame.size.height);
containerFrame.size.height = viewFrame.size.height - (hidden ? 0 : tabBarFrame.size.height);
[UIView animateWithDuration:kAnimationDuration
animations:^{
self.tabBar.frame = tabBarFrame;
transitionView.frame = containerFrame;
}
];
}
from my ScrollableDetailImageViewController.m
- (void)setBarsHidden:(BOOL)hidden animated:(BOOL)animated
{
[self setTabBarHidden:hidden animated:animated];
[self setStatusBarHidden:hidden animated:animated];
// must be performed after hiding/showing of statusBar
[self.navigationController setNavigationBarHidden:hidden animated:animated];
}
- (void)setTabBarHidden:(BOOL)hidden animated:(BOOL)animated
{
id parent = self.navigationController.parentViewController;
if ([parent respondsToSelector:#selector(isTabBarHidden)]
&& hidden != [parent isTabBarHidden]
&& [parent respondsToSelector:#selector(setTabBarHidden:animated:)])
[parent setTabBarHidden:hidden animated:animated];
}
Just try this code, If it is working. I have written this code a year before. But, still it works good for me.
I didn't used the block based animations. Because it was written when I am new to iOS. Just try and optimize yourself as you wanted.
- (void) hideTabBar:(UITabBarController *) tabbarcontroller {
[self.navigationController setNavigationBarHidden:YES animated:YES];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.1];
for(UIView *view in tabbarcontroller.view.subviews)
{
if ([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
if([view isKindOfClass:[UITabBar class]])
{
[view setFrame:CGRectMake(view.frame.origin.x, 480, view.frame.size.width, view.frame.size.height)];
}
else
{
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 480)];
}
}else if([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
if([view isKindOfClass:[UITabBar class]])
{
[view setFrame:CGRectMake(view.frame.origin.x, 1024, view.frame.size.width, view.frame.size.height)];
}
else
{
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 1024)];
}
}
}
[UIView commitAnimations];
}
// Method shows the bottom and top bars
- (void) showTabBar:(UITabBarController *) tabbarcontroller {
[self.navigationController setNavigationBarHidden:NO animated:YES];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.1];
for(UIView *view in tabbarcontroller.view.subviews)
{
if ([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
if([view isKindOfClass:[UITabBar class]])
{
[view setFrame:CGRectMake(view.frame.origin.x, 430, view.frame.size.width, view.frame.size.height)];
}
else
{
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 436)];
}
}else if([[UIDevice currentDevice]userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
if([view isKindOfClass:[UITabBar class]])
{
[view setFrame:CGRectMake(view.frame.origin.x, 975, view.frame.size.width, view.frame.size.height)];
}
else
{
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, 980)];
}
}
}
[UIView commitAnimations];
}
Try this
you can hide tabbar contrller and navigation bar using animation like:-
-(IBAction)hide:(id)sender
{
[self hideShowBars];
}
- (void) hideShowBars
{
CGRect rect = self.navigationController.navigationBar.frame;
CGRect rect1 = self.tabBarController.tabBar.frame;
if(self.navigationController.navigationBar.isHidden)
{
[self.navigationController.navigationBar setHidden:NO];
rect.origin.y=self.view.frame.origin.y;
}
else
{
rect.origin.y=self.view.frame.origin.y-rect.size.height;
}
if(self.tabBarController.tabBar.isHidden)
{
[self.tabBarController.tabBar setHidden:NO];
rect1.origin.y=self.view.frame.size.height-rect1.size.height-rect1.size.height;
}
else
{
rect1.origin.y=self.view.frame.size.height;
}
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.50];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:#selector(hideShowBarsAnimationStopped)];
self.navigationController.navigationBar.frame=rect;
self.tabBarController.tabBar.frame = rect1;
[UIView commitAnimations];
}
- (void) hideShowBarsAnimationStopped
{
if(self.navigationController.navigationBar.frame.origin.y==self.view.frame.origin.y)
return;
if(!self.navigationController.navigationBar.isHidden)
{
[self.navigationController.navigationBar setHidden:YES];
}
if(!self.tabBarController.tabBar.isHidden)
{
[self.tabBarController.tabBar setHidden:YES];
}
}