Inherits from | |
Conforms to | |
Framework | /System/Library/Frameworks/UIKit.framework |
Availability | Available in iOS 2.0 and later. |
Companion guide | |
Declared in | UITableViewController.h |
The UITableViewController
class creates a controller object that manages a table view. It implements the following behavior:
If a nib file is specified via the initWithNibName:bundle:
method (which is declared by the superclass UIViewController
), UITableViewController
loads the table view archived in the nib file. Otherwise, it creates an unconfigured UITableView
object with the correct dimensions and autoresize mask. You can access this view through the tableView
property.
If a nib file containing the table view is loaded, the data source and delegate become those objects defined in the nib file (if any). If no nib file is specified or if the nib file defines no data source or delegate, UITableViewController
sets the data source and the delegate of the table view to self
.
When the table view is about to appear the first time it’s loaded, the table-view controller reloads the table view’s data. It also clears its selection (with or without animation, depending on the request) every time the table view is displayed. The UITableViewController
class implements this in the superclass method viewWillAppear:
. You can disable this behavior by changing the value in the clearsSelectionOnViewWillAppear
property.
When the table view has appeared, the controller flashes the table view’s scroll indicators. The UITableViewController
class implements this in the superclass method viewDidAppear:
.
It implements the superclass method setEditing:animated:
so that if a user taps an Edit|Done button in the navigation bar, the controller toggles the edit mode of the table.
You create a custom subclass of UITableViewController
for each table view that you want to manage. When you initialize the controller in initWithStyle:
, you must specify the style of the table view (plain or grouped) that the controller is to manage. Because the initially created table view is without table dimensions (that is, number of sections and number of rows per section) or content, the table view’s data source and delegate—that is, the UITableViewController
object itself—must provide the table dimensions, the cell content, and any desired configurations (as usual). You may override loadView
or any other superclass method, but if you do be sure to invoke the superclass implementation of the method, usually as the first method call.
tableView
property
clearsSelectionOnViewWillAppear
property
For more about Objective-C properties, see “Properties” in The Objective-C Programming Language.
A Boolean value indicating if the controller clears the selection when the table appears.
@property(nonatomic) BOOL clearsSelectionOnViewWillAppear
The default value of this property is YES
. When YES
, the table view controller clears the table’s current selection when it receives a viewWillAppear:
message. Setting this property to NO
preserves the selection.
UITableViewController.h
Returns the table view managed by the controller object.
@property(nonatomic, retain) UITableView *tableView
UITableViewController.h
Initializes a table-view controller to manage a table view of a given style.
- (id)initWithStyle:(UITableViewStyle)style
A constant that specifies the style of table view that the controller object is to manage (UITableViewStylePlain
or UITableViewStyleGrouped
).
An initialized UITableViewController
object or nil
if the object couldn’t be created.
If you use the standard init
method to initialize a UITableViewController
object, a table view in the plain style is created.
UITableViewController.h
Last updated: 2010-02-25