I am using a Navigation Controller. On top of the AppDelegate window I added a view that contains a scrollview and toolbar that I want to be using throughout the app. They appear fine on all the view controllers that I am using in the navigation controller. Now I would like to be able to hide and show them from each view controller.
I can't figure out how that should work,
any suggestions?
I am not sure if I understand you correctly but if you just want to hide/show scrollbars in each viewcontroller just call:
myScrollView.showsVerticalScrollIndicator = NO;
myScrollView.showsVerticalScrollIndicator = NO;
in init, viewDidLoad or any custom method in your UIViewController subclasses.
I have a xib with a uitableview in it.
This table is connected via IBOutlet to a ViewController, root of a hierarchy of view controllers.
Now I have to add a toolbar with a button such that it isn't visible in all the views (controlled by subclasses of the root view controller).
How can I do it so that the table resizes properly?
[urtoolbar setHidden:YES];
wherever u want to hide
Interface builder does not let me click and drag a Navigation Bar onto a Table View Controller!!! It is super frustrating.
All I want is a table view with an edit button (done in interface-builder). If this is not possible, then how do I add a navbar progammatically?
From the outline view, make sure your Table View Controller is selected.
Then go to the Editor menu, and click on the Embed In submenu, and choose Navigation Controller and voila. You have your navigation controller pointing to your tableview controller with a relationship built in.
For a table view with an edit button at the top, use a UINavigationController, with a UITableView as the rootView. That means you're going to make a custom UITableView subclass for your table view, and use that as the rootView of your UINavigationController instance. (Programatically, it's set with UINavigationController's -(id)initWithRootViewController. It's also settable through IB.)
Then, in your UITableView subclass, uncomment the following line:
- (void)viewDidLoad {
[super viewDidLoad];
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
and voilà, your UINavigationController's view shows up as a table view with an edit button on the right side of the navigation bar.
Since the controller is at the top of the stack, there's no "back" button on the left, so you can use self.navigationItem.leftBarButtonItem for whatever UIBarButtonItem you create.
I agree that it's difficult to figure out how to do things like this in Interface Builder, but luckily it is possible to add a Navigation Bar and Bar Button Item to a Table View this way. Here's how to do it:
Drag a blank View (an instance of UIView) from the Library to the area near the top of the Table View. As you drag near the target area, Interface Builder will highlight it in blue to show you where to drop the View. Let go, and the View will be added as a subview of the Table View's header view.
Drag a Navigation Bar from the Library and drop it on the blank View you just added.
Drag a Bar Button Item from the Library and drop it onto the Navigation Bar.
EDIT
The problem with the above approach is that, as Bogatyr points out, the Navigation Bar will then scroll along with the Table View. Apple recommends using a custom subclass of UIViewController that owns both the Navigation Bar and an instance of UITableView resized to fit. Unfortunately, that means you would have to implement the UITableViewController behavior needed by your UIViewController subclass yourself.
Another approach that seems to work well is to create a custom subclass of UIViewController that owns a blank background view containing the Navigation Bar as well as a blank content view (an instance of UIView) that fits under the Navigation Bar. Your custom subclass would have an outlet pointing to an instance of UITableViewController in the same nib file.
This has the advantage of allowing all the view components to be created and configured in Interface Builder, and doesn't require implementing UITableViewController methods from scratch. The only detail you'd need to take care of in the Table View Controller's parent would be to add Table View as a subview of the parent's content view in viewDidLoad.
The parent could implement the action methods for the Navigation Bar's button items, and implement the delegate pattern if necessary.
From iOS6 onwards, you can use container view. So what you have to do is take View controller, add the navigation bar to it, then add a Container View to same view controller. It will automatically, add the new view controller link to your container view. Now simply delete that, and your table view controller in the story board. Now embed the table view controller to container view by control drag. Hope it helps.
First add a navigation controller and put the table view controller (as root view controller) onto the navigation controller. This is how it is done in Code because I don't use IB.
Why in the world you can't drag a navigationItem into a .xib file with File's Owner set to a subclass of UIViewController and hook the navigationItem up to the UIViewController's navigationItem outlet is beyond me. It seems like a real hole in IB / XCode integration. Because you can certainly drag an instance of ViewController to a xib file, and drag a navigationItem into the ViewController, and then set the title and barbuttonitems that way.
So if you want to define your UITableViewController subclass object's navigation bar in IB, you have to create your TableVC object in a xib file (not the one .xib file that contains the tableview for your UITableViewController, though!). You then either hook the TableVC object up to be an outlet of another object (like your application delegate), which works if you need just one instance of your TVC throughout the lifetime of your app, or if you want to dynamically create instances of your TableVC in code you load this extra .xib file manually via loadNibNamed:owner:options method of the NSBundle class.
These steps worked for me in iOS 9:
Add a View Controller to the Storyboard. Make UITableViewController as base Class.
Add a Navigation Bar object onto view controller at the top.
Add a Table View below Navigation bar.
Add a Table View Cell into Table View.
Add constraints.
This is the other easy way ;
Choose your TableViewController screen on storyboard.
Click Size Inspector symbol on the right menu and find Simulated Size
Change Fixed to Free Form
You can add navigation bar easily.
I have a navigationController which has a navigation bar. I would really like to have 3 UIBarButtonItems, one on the left, one in the middle, and one on the right. I am able to get the left and right ones added, but how would I add one in the middle, since when using a navigationController, I can't add an array of items to the navBar items property?
Could I somehow add a UIButton, styled like a UIBarButtonItem in the titleView location?
taken from apple api, basically you can create a custom UIView that has a UIButton in it and use this as your titleView (notice the note about a leftBarButtonItem causes the titleView to be ignored and not shown): (edit note: this is a property of UINavigationItem)
titleView
A custom view displayed in the center of the navigation bar when this item is the top item.
#property(nonatomic, retain) UIView *titleView
Discussion
If this property value is nil, the navigation item’s title is displayed in the center of the navigation bar when this item is the top item. If you set this property to a custom title, it is displayed instead of the title. This property is ignored if leftBarButtonItem is not nil.
Custom views can contain buttons. Use the buttonWithType: method in UIButton class to add buttons to your custom view in the style of the navigation bar. Custom title views are centered on the navigation bar and may be resized to fit.
How do I add using the InterfaceBuilder?
If you already have a UINavigationController, it's preferable to use its built-in toolbar.
In Interface Builder, check "Shows Toolbar" in your Navigation Controller's properties, and then use the toolbarItems attribute in your view controllers to populate the toolbar:
self.toolbarItems = [NSArray arrayWithObjects:...];
If you don't have a UINavigationController, you can drag a UIToolbar in from the library. I usually set its frame in the nib using the snap to guides feature. Then you can set the items with the method that #Can Berk Güder gives. Using UIBarButtonSystemItemFlexibleSpace and/or UIBarButtonSystemItemFixedSpace you can get a pretty good arrangement of buttons.
If you're doing it this way, just declare a UIToolbar* toolbar and set #property (nonatomic, retain) IBOutlet UIToolbar* toolbar in the interface of your view controller. In the implementation just #synthesize toolbar;. You can set the items in viewDidLoad and link the toolbar to your nib file by adding a new referencing outlet to 'toolbar' in File's Owner.