In my view controller I am adding a search bar programmatically and it appears exactly the way i want but when i click on it do nothing i can't write/type anything on the search bar, And there is no error on the log. I added search bar in another view controller same way,it does works but in that particular it doesn't work. I am pushing this view controller from previous view controller so it has a navigation back button on the left (check the image) it works too.
In the view controller there is a TableView and a CollectionView i want to add the search for the table view. I was wondering if there is anything to do with having both of this in the same view controller.
Code to add search bar
- (void)viewDidLoad {
//other stuff on view controller
[self setSearchView];
}
-(void)setSearchView{
//searchController is added as a property on .h file
//and all the delegate are also added
//#property (strong, nonatomic) UISearchController *searchController;
self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
self.searchController.searchResultsUpdater= self;
self.searchController.dimsBackgroundDuringPresentation = NO;
self.searchController.searchBar.delegate = self;
self.navigationController.toolbarHidden=YES;
self.navigationItem.titleView=self.searchController.searchBar;
self.searchController.hidesNavigationBarDuringPresentation = NO;
self.definesPresentationContext = YES;
}
I am coming to this view controller from a previous view controller and pushing this view controller when a button is clicked .And i am using nib file
Button action
- (void)ButtonClicked {
MYNextViewController *nextViewController = [[MYNextViewController alloc] initWithNibName:#"MYNibFileName" bundle:nil];
// I also have a tab bar on the bottom which i am hiding for that view controller when pushing
nextViewController .hidesBottomBarWhenPushed=YES;
[self.navigationController pushViewController:nextViewController animated:YES];
}
Image:
Any help will be greatly appreciated. Hope i made my self clear...
Finally i was able to solve this problem with some change in view hierarchy thanks to #Tj3n , but not sure if this is the correct solution but right now its working ..
I also had to remove this line and add few more codes for other purpose
self.definesPresentationContext = YES; //removed...
also answer of that questions was helpful
I had a similar issue and tried the answers here, but it didnt work for me. Then stumbled upon this post https://forums.developer.apple.com/thread/122972
Basically for me disabling Automatically Sync Pasteboard worked. (Simulator -> Edit -> Automatically Sync Pasteboard)
//Please use this code
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.bounds.size.width, self.navigationController.navigationBar.bounds.size.height)];
_searchBar.tintColor = [UIColor blueColor];
//[_searchBar setImage:[UIImage imageNamed:#"cross_icon"] forSearchBarIcon:UISearchBarIconBookmark state:UIControlStateNormal];
_searchBar.placeholder = #"Enter drug name";
//_searchBar.showsBookmarkButton = YES;
_searchBar.barTintColor = [UIColor clearColor];
UITextField *txfSearchField = [_searchBar valueForKey:#"_searchField"];
txfSearchField.backgroundColor = [UIColor whiteColor];
txfSearchField.tintColor = [UIColor blackColor];
txfSearchField.textColor = [UIColor blackColor];
_searchBar.autoresizingMask = UIViewAutoresizingFlexibleWidth;
_searchBar.delegate = self;
_searchBar.showsCancelButton = NO;
[_searchBar becomeFirstResponder];
[self.navigationController.navigationBar addSubview:_searchBar];
For your particular case, Use this.
self.searchController.obscuresBackgroundDuringPresentation = NO;
This will allow you to use the same tableview to interact with search result.
I have multiple view controllers which all use one class (we'll call it searchClass <NSObject>) I wrote that has a UISearchController for searching an external API. The user can tap the search icon and the search controller becomes active: [_searchClass.searchController setActive:YES]; It uses its own table view controller (not the one in each of the view controllers, because they aren't all table view controllers).
In my case I make the search bar appear in the navigation bar. Search works great, the user can select a search result and tap it for a detail view. The problem is when the user goes back (unwinds) from the detail view to the search results, there is a black gap about 44 pts tall that appears briefly above the table view and below the navigation bar, and then disappears.
Here is my setup. In the view controller:
self.definesPresentationContext = YES;
_searchClass = [SearchClass new];
_searchClass.navController = [self navigationController];
In the search class:
_searchTableViewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:#"searchTableViewController"];
_searchTableViewController.tableView.delegate = self;
_searchTableViewController.tableView.dataSource = self;
_searchTableViewController.tableView.backgroundColor = [UIColor clearColor];
_searchTableViewController.tableView.tableFooterView = [[UIView alloc] initWithFrame:CGRectZero];
_searchTableViewController.tableView.tableHeaderView = [[UIView alloc] initWithFrame:CGRectZero];
_searchTableViewController.definesPresentationContext = YES;
_searchController = [[UISearchController alloc] initWithSearchResultsController:_searchTableViewController];
_searchController.delegate = self;
_searchController.hidesNavigationBarDuringPresentation = NO;
_searchController.searchBar.delegate = self;
_searchController.searchBar.searchBarStyle = UISearchBarStyleMinimal;
_searchController.searchBar.showsCancelButton = YES;
_searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0);
There are also the usual delegate methods for UISearchBar and UISearchController, and the code that displays the search bar, which uses an animation to replace the titleView of the navigation bar.
How do I get rid of that gap after unwinding back to the search results?
I found the solution, it's related to the UINavigationBar. For some reason setting the translucent property to NO seems to have caused this issue.
self.navigationBar.translucent = YES;
Setting it to YES (or omitting the line since it is the default) made it work properly. Since I still wanted to have the navigation bar be opaque, I did the following to make the nav bar translucent only during transitions, which seems to be where the issue lies:
- (void) viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
self.navigationController.navigationBar.translucent = YES;
}
-(void) viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
self.navigationController.navigationBar.translucent = NO;
}
Definitely seems like a genuine iOS bug to me.
I added a UISearchBar to my initial UIViewController and everything works fine. However when I go to add the same UISearchBar, the same way to another ViewController that's pushed ontop of the first one, nothing seems to happen when I click into the searchBar. No delegate method is fired, no keyboard comes up, nothing.
This is how I'm adding it to the navigationBar:
- (void)viewDidLoad {
[super viewDidLoad];
UITableViewController *searchResultsController = [[UITableViewController alloc] initWithStyle:UITableViewStylePlain];
searchResultsController.tableView.dataSource = self;
searchResultsController.tableView.delegate = self;
self.searchResults = [NSMutableArray array];
self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController];
self.searchController.searchResultsUpdater = self;
self.searchController.hidesNavigationBarDuringPresentation = NO;
self.searchController.searchBar.placeholder = NSLocalizedString(#"Search, eh?", nil);
// Include the search bar within the navigation bar.
self.navigationItem.titleView = self.searchController.searchBar;
self.definesPresentationContext = YES;
}
Like I said it works in the first UIViewController, am I missing something in the other 2-3 viewControllers I've tried adding this too? I don't see why the searchBar shows up in the navBar but nothing is happening upon clicking into it. I've also set the delegate like so:
#interface ViewController () <UISearchResultsUpdating>
Try setting definesPresentationContext to NO on the first view controller as soon as you present a new one on.
I believe that the presentation walks up the view controller hierarchy looking for the first one that defines a context and not down.
There is plenty of sample code out there, and I thought I was following it line for line; my code:
(void)viewDidLoad
{
[super viewDidLoad];
// init search bar
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
searchBar.delegate = self;
searchBar.showsCancelButton=YES;
// set up searchDisplayController
UISearchDisplayController *searchController = [[UISearchDisplayController alloc]
initWithSearchBar:searchBar contentsController:self];
searchController.delegate = self;
searchController.searchResultsDataSource = self;
searchController.searchResultsDelegate = self;
// display search bar in nav bar
self.searchDisplayController.displaysSearchBarInNavigationBar = YES;
}
With that code, shouldn't I see the search bar displayed in the navigation bar? All I see in the nav bar is the cancel button. I have declared the protocols <UISearchDisplayDelegate, UISearchBarDelegate> in my header file. What am I missing, or what could be going wrong? Thanks
Note:
Using self.navigationItem.titleView = searchBar, the search bar displays as expected. I wonder what are the advantages of the newer displaysSearchBarInNavigationBar method..
-- Edit by tassilo --
It looks like the search bar is added to the navigation bar, but then disappears.
The displaysSearchBarInNavigationBar property makes it so the search bar slides into the navigation bar when the user taps it, like what happens in the Apple Mail app. You still need to add the search bar to the view somewhere.
Best way to do this is to set the tableHeaderView of a UITableViewController to the search bar.
self.tableView.tableHeaderView = self.searchBar;
This line is your problem.
self.searchDisplayController.displaysSearchBarInNavigationBar = YES;
self.searchDisplayController is not the same as searchDisplayController, that you created.
So just replace self.searchDisplayController with searchDisplayController. Also, be sure that you don't have #synchronize searchDisplayController;
In my iOS app, my window's rootViewController is a tab bar controller with the a hierarchy like this:
UITabBarController
UINavigationController 1
FirstContentController
UINavigationController 2
...
UINavigationController 3
...
...
When the user taps a certain row on FirstContentController, an instance of SecondController will be pushed onto its navigation controller. SecondContentController sets hidesBottomBarWhenPushed to YES in its init method and sets self.navigationController.toolbarHidden to NO in viewWillAppear:.
In iOS 6, the user would tap the row in FirstController and SecondController would get pushed onto the nav controller. Because it has hidesBottomBarWhenPushed set, it would hide the tab bar and, by the time the transition animation was complete, SecondController would be on the screen with its toolbar visible.
However, when testing this under iOS 7, hidesBottomBarWhenPushed's behavior seems to have changed. What I see now is:
the tab bar hides, as expected
the toolbar appears, as expected
a gap of unusable space exactly 49 pixels tall (the height of the tab bar) appears between the toolbar and the content view
The gap is completely unusable - it doesn't respond to touches and if i set clipsToBounds to YES on the main view, nothing draws there. After a lot of debugging and examining subview hierarchies, it looks like iOS's autosizing mechanism resizes the view controller's view to a height of 411 (on the iPhone 5). It should be 460 to reach all the way down to the toolbar, but the layout system seems to be including a "ghost" 49-pixel-tall tab bar.
This problem only occurs if the view controller has a tab bar controller as one if its parent containers.
On iOS 7, how can I have the tab bar disappear and a toolbar seamlessly slide into place when a new controller is pushed, and still have the view take up the entire space between the navigation item and the toolbar?
UPDATE
After further investigation, this only happens if SecondController's edgesForExtendedLayout is set to UIRectEdgeNone. However, unless I set that property to UIRectEdgeNone, the view's frame is too long and extends under the toolbar, where it can't be seen or interacted with.
I found that adding the following 2 lines of code in viewDidLoad of SecondViewController (where you want to hide TabBar but show the tool bar) fixes the problem.
self.extendedLayoutIncludesOpaqueBars = YES;
self.edgesForExtendedLayout = UIRectEdgeBottom;
My viewDidLoad of SecondViewController is as follows:
- (void)viewDidLoad {
[super viewDidLoad];
// These 2 lines made the difference
self.extendedLayoutIncludesOpaqueBars = YES;
self.edgesForExtendedLayout = UIRectEdgeBottom;
// The usual configuration
self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
self.navigationController.navigationBar.translucent = NO;
self.navigationController.toolbarHidden = NO;
self.navigationController.toolbar.barStyle = UIBarStyleBlack;
self.navigationController.toolbar.translucent = NO;
.
.
}
But you need to fix the frame of the view manually as this causes the size to be (320x504). Which means it extends even behind the tool bar. If this is not a concern for you then this solution should work.
You will not like this answer This is not the answer you want, but after some research on hiding the tab bar in iOS7, my conclusion is: don't!
Tab bars have never been meant to be hidden - after all why have a UITabBarController if you want to hide the tab bar. The hidesBottomBarWhenPushed on view controllers is for hiding the bottom bar of a navigation controller, not tab bars. From the documentation:
A view controller added as a child of a navigation controller can display an optional toolbar at the bottom of the screen. The value of this property on the topmost view controller determines whether the toolbar is visible. If the value of this property is YES, the toolbar is hidden. If the value of this property is NO, the bar is visible.
Moreover, you are warned not to modify the tab bar object directly. Again, from the documentation:
You should never attempt to manipulate the UITabBar object itself stored in this property.
This is exactly what you are doing when setting it to hidden.
In iOS6 this has worked, but now in iOS7, it doesn't. And it seems very error prone to hide it. When you finally manage to hide it, if the app goes to the background and returns, Apple's layout logic overrides your changes.
My suggestion is to display your data modally. In iOS7 you can create custom transitions, so if it is important to you to have a push transition, you can recreate it yourself, although this is a bit over the top. Normal modal transition is something users are familiar, and actually fits this case better than push which hides the tab bar.
Another solution is to use a toolbar instead of a tab bar. If you use the navigation controller's toolbar for your tabs, you can then use hidesBottomBarWhenPushed as you require and it would give you the behavior you expect.
Uncheck "Hide bottoms bars on push" and set your autoconstraints as if there is a tab bar. Then in "ViewDidLoad" of the controller you want to hide the system tab bar, put the following code.
[self.tabBarController.tabBar setFrame:CGRectZero];
This makes sure the tab bar still accepts user interaction yet not visible to users. (other alternatives such as setting it 0 alpha or hidden will render tab bar useless) Now the autoconstaraints will make sure your view displays correctly with the tab bar height as zero.
It's a bug in iOS 7 UIKit due to this particular combination of:
UITabBarController
hidesBottomBarWhenPushed = YES
edgesForExtendedLayout = UIRectEdgeNone
UINavigationController toolbar
You should file a bug with Apple and include your sample code.
To work around the bug you need to remove one of those four conditions. Two likely options:
Fix the layout of your "second" view controller so that it works correctly when edgesForExtendedLayout is set to UIRectEdgeAll. This could be as simple as setting the contentInset on a scroll view.
Don't use UINavigationController's built-in toolbar. Instead, create a separate UIToolBar instance and manually add it to your second view controller's view.
You do have to set the tabBar of the TabBarController to hidden and your view should have autosizing set to flexible height.
With this code it's working:
#implementation SecondController
-(id)init
{
if( (self = [super init]) )
{
}
return self;
}
- (void)viewDidLoad;
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor redColor];
self.view.autoresizingMask = UIViewAutoresizingFlexibleHeight;
self.tabBarController.tabBar.hidden = YES;
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
// will log a height of 411, instead of the desired 460
NSLog(#"frame: %#", NSStringFromCGRect(self.view.frame));
}
#end
Or, if you do want to use the hidesBottomBarWhenPushed method, you have to do this before you push the view controller obviously:
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
SecondController* controller = [[SecondController alloc] init];
controller.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:controller animated:YES];
}
If using the second method, your viewDidLoad method can get rid of flexible height method as well as tabBarHidden:
- (void)viewDidLoad;
{
[super viewDidLoad];
self.view.backgroundColor = [UIColor redColor];
self.edgesForExtendedLayout = UIRectEdgeNone;
}
See the result:
The key to this conundrum is that the navigationcontroller.view.frame size doesn't change. Going of batkin's Gist here is a gist of my own.
FirstViewController.m
#import "FirstController.h"
#import "SecondController.h"
#implementation FirstController
-(id)init
{
if( (self = [super init]) )
{
self.tabBarItem.title = #"Foo";
self.tabBarItem.image = [UIImage imageNamed:#"Tab Icon.png"];
}
return self;
}
-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section
{
return 1;
}
-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
UITableViewCell* cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];
cell.textLabel.text = #"Click";
return cell;
}
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
SecondController* controller = [[SecondController alloc] init];
self.tabBarController.tabBar.hidden = YES;
[self.navigationController pushViewController:controller animated:YES];
}
#end
SecondViewController.m
#import "SecondController.h"
#implementation SecondController
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
self.view.backgroundColor = [UIColor redColor];
self.view.clipsToBounds = YES;
/* ENTER VORTEX OF DESPAIR */
// without this, there's no gap, but the view continues under the tool
// bar; with it, I get the 49-pixel gap thats making my life miserable
self.edgesForExtendedLayout = UIRectEdgeNone;
//this resizes the navigation controller to fill the void left by the tab bar.
CGRect newFrame = self.navigationController.view.frame;
newFrame.size.height = newFrame.size.height + 49;
self.navigationController.view.frame = newFrame;
/* EXIT VORTEX OF DESPAIR */
self.navigationController.toolbarItems = #[
[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:nil action:nil]
];
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
self.navigationController.toolbarHidden = NO;
// will log a height of 411, instead of the desired 460
NSLog(#"frame: %#", NSStringFromCGRect(self.view.frame));
NSLog(#"frame: %#", NSStringFromCGRect(self.navigationController.view.frame));
}
-(void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
self.tabBarController.tabBar.hidden = NO;
self.navigationController.toolbarHidden = YES;
//this resizes the navigation controller back to normal.
CGRect newFrame = self.navigationController.view.frame;
newFrame.size.height = newFrame.size.height - 49;
self.navigationController.view.frame = newFrame;
//this is optional and resizes the view to fill the void left by the missing toolbar.
CGRect newViewFrame = self.view.frame;
newViewFrame.size.height = newViewFrame.size.height + 49;
self.view.frame = newViewFrame;
}
#end
If you are using Auto Layout,make sure you pin the view to its superview instead of Top Layout Guide or Bottom Layout Guide.
Have you tried to move your call hidesBottomBarWhenPushed in the viewDidLoad or before the secondViewController is pushed?
With ios7, a lot of timing issues appear if you don't do the calls at teh good moment.
You mention that you can fix this by not touching the edgesForExtendedLayout. Is there a necessary reason that the content/controls of the view controller are contained in the root view of the pushed view controller? You might consider wrapping everything in a view that is the first and only child of the main view. Then adjust that view's frame in the viewDidLayoutSubviews of the pushed view controller to avoid having content permanently beneath the toolbar using the top/bottomLayoutGuide of the view controller.
I built a new project using your Gist, and I encased the UITabBarController in a UINavigationController:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
UITabBarController* tabController = [[UITabBarController alloc] init];
tabController.viewControllers = #[
[[UINavigationController alloc] initWithRootViewController:[[FirstViewController alloc] init]],
[[UINavigationController alloc] initWithRootViewController:[[FirstViewController alloc] init]]
];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:tabController];
[navController setNavigationBarHidden:YES];
self.window.rootViewController = navController;
return YES;
}
And to show the SecondViewController, here is what I did:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
SecondViewController* controller = [[SecondViewController alloc] init];
// Reaching the UITabBarViewController's parent navigationController
[self.parentViewController.navigationController pushViewController:controller animated:YES];
}
Finally, in the secondViewController:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
self.view.backgroundColor = [UIColor redColor];
self.view.clipsToBounds = YES;
// The following line only works in iOS7
if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1) {
self.edgesForExtendedLayout = UIRectEdgeNone;
}
[self.navigationItem setRightBarButtonItem:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:nil action:nil]];
UIBarButtonItem * logoutButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemReply target:nil action:nil];
NSMutableArray * arr = [NSMutableArray arrayWithObjects:logoutButton, nil];
[self setToolbarItems:arr animated:YES];
[self.navigationController setNavigationBarHidden:NO animated:YES];
[self.navigationController setToolbarHidden:NO animated:YES];
}
- (void)viewWillDisappear:(BOOL)animated
{
[self.navigationController setNavigationBarHidden:YES animated:YES];
[self.navigationController setToolbarHidden:YES animated:YES];
}
Here's what it does look:
EDIT: Changed the example and changed the screenshot. Made the example iOS6 compatible.
I manually manage hide/unhide of bottom-tab-bar along with fade animation by
...
[self.tabBarController.tabBar setHidden:NO];
[self.tabBarController.tabBar setAlpha:0.1];
[UIView animateWithDuration:0.2 animations:^{
[self.tabBarController.tabBar setAlpha:1.0];
}];
...
Bottom Toolbar on SecondVC was added in IB. No problem so far. Using Storyboard.
I think you can set SecondController's edgesForExtendedLayout to UIRectEdgeBottom.
This helps me:
Choose you view controller in storyboard -> Go to properties -> Uncheck "Adjust Scroll View Insets"
As #Leo Natan is pointing out, it seems as if hiding the tab bar and showing a toolbar is discouraged.
Nevertheless, there is a very easy solution that is working:
Just check "Under Opaque Bars" in the view controller properties in the storyboard as shown below: