iOS Xib文件详解-CFANZ编程社区

https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIViewController_Class/#//apple_ref/occ/instp/UIViewController/nibName

用xib这种方式是需要加载xib文件的。加载xib文件有两种方法：

// 第一种方法（较为常用）
CYLView *view = [[[NSBundle mainBundle] loadNibNamed:@"CYLView" owner:nil options:nil] firstObject]; // CYLView代表CYLView.xib，代表CYLView这个类对应的xib文件。这个方法返回的是一个NSArray，我们取第一个Object或最后一个（因为这个数组只有一个CYLView没有其他对象）就是需要加载的CYLView。

// 第二种方法
UINib *nib = [UINib nibWithNibName:@"CYLView" bundle:nil];
NSArray *objectArray = [nib instantiateWithOwner:nil options:nil];
CYLView *view = [objectArray firstObject];

App Programming Guide for iOS.

Configuring a View Controller Using Nib Files

- initWithNibName:bundle: Designated Initializer
nibName Property

The name of the view controller'€™s nib file, if one was specified. (read-only)

Declaration

OBJECTIVE-C

@property(nonatomic, readonly, copy) NSString *nibName

Discussion

This property contains the value specified at initialization time to the initWithNibName:bundle: method. The value of this property may be nil.

If you use a nib file to store your view controller'€™s view, it is recommended that you specify that nib file explicitly when initializing your view controller. However, if you do not specify a nib name, and do not override the loadView method in your custom subclass, the view controller searches for a nib file using other means. Specifically, it looks for a nib file with an appropriate name (without the .nib extension) and loads that nib file whenever its view is requested. Specifically, it looks (in order) for a nib file with one of the following names:

If the view controller class name ends with the word ‘Controller’, as in MyViewController, it looks for a nib file whose name matches the class name without the word ‘€œController’, as in MyView.nib.
It looks for a nib file whose name matches the name of the view controller class. For example, if the class name is MyViewController, it looks for a MyViewController.nib file.

NOTE

Nib names that include a platform-specific identifier such as ~iphone or ~ipad are loaded only on a device of the corresponding type. For example, a nib name of MyViewController~ipad.nib is loaded only on iPad. If your app supports both platform types, you must provide versions of your nib files for each platform.

Availability

Available in iOS 2.0 and later.

Interacting with Storyboards and Segues

storyboard Property
- shouldPerformSegueWithIdentifier:sender:
- prepareForSegue:sender:
- performSegueWithIdentifier:sender:
- allowedChildViewControllersForUnwindingFromSource:
- childViewControllerContainingSegueSource:
- canPerformUnwindSegueAction:fromViewController:withSender:
- unwindForSegue:towardsViewController:
- viewControllerForUnwindSegueAction:fromViewController:withSender: (iOS 9.0)
- segueForUnwindingToViewController:fromViewController:identifier: (iOS 9.0)

Managing the View

view Property
- isViewLoaded
- loadView
- viewDidLoad
- loadViewIfNeeded
viewIfLoaded Property
title Property
preferredContentSize Property

Presenting View Controllers

modalPresentationStyle Property
modalTransitionStyle Property
modalInPopover Property
- showViewController:sender:
- showDetailViewController:sender:
- presentViewController:animated:completion:
- dismissViewControllerAnimated:completion:
definesPresentationContext Property
providesPresentationContextTransitionStyle Property
- disablesAutomaticKeyboardDismissal

Supporting Custom Transitions and Presentations

transitioningDelegate Property
- transitionCoordinator
- targetViewControllerForAction:sender:
presentationController Property
popoverPresentationController Property

Responding to View Events

- viewWillAppear:
- viewDidAppear:
- viewWillDisappear:
- viewDidDisappear:

Configuring the View’s Layout Behavior

- viewWillLayoutSubviews
- viewDidLayoutSubviews
- updateViewConstraints
bottomLayoutGuide Property
topLayoutGuide Property
edgesForExtendedLayout Property
extendedLayoutIncludesOpaqueBars Property
automaticallyAdjustsScrollViewInsets Property

Testing for Specific Kinds of View Transitions

- isMovingFromParentViewController
- isMovingToParentViewController
- isBeingPresented
- isBeingDismissed

Configuring the View Rotation Settings

- shouldAutorotate
- supportedInterfaceOrientations
- preferredInterfaceOrientationForPresentation
+ attemptRotationToDeviceOrientation

Adapting to Environment Changes

- collapseSecondaryViewController:forSplitViewController:
- separateSecondaryViewControllerForSplitViewController:

Managing Child View Controllers in a Custom Container

childViewControllers Property
- addChildViewController:
- removeFromParentViewController
- transitionFromViewController:toViewController:duration:options:animations:completion:
- shouldAutomaticallyForwardAppearanceMethods
- beginAppearanceTransition:animated:
- endAppearanceTransition
- setOverrideTraitCollection:forChildViewController:
- overrideTraitCollectionForChildViewController:

Responding to Containment Events

- willMoveToParentViewController:
- didMoveToParentViewController:

Getting Other Related View Controllers

presentingViewController Property
presentedViewController Property
parentViewController Property
navigationController Property
splitViewController Property
tabBarController Property

Handling Memory Warnings

- didReceiveMemoryWarning

Managing State Restoration

restorationIdentifier Property
restorationClass Property
- encodeRestorableStateWithCoder:
- decodeRestorableStateWithCoder:
- applicationFinishedRestoringState

Supporting App Extensions

extensionContext Property

Working With 3D Touch Previews and Preview Quick Actions

peek and pop. For clarity here, and to align with the API names, this document uses the corresponding terms preview and commit view. To learn more about 3D Touch, read Adopting 3D Touch on iPhone.

- registerForPreviewingWithDelegate:sourceView:
- unregisterForPreviewingWithContext:
- previewActionItems

Managing the Status Bar

- childViewControllerForStatusBarHidden
- childViewControllerForStatusBarStyle
- preferredStatusBarStyle
- prefersStatusBarHidden
modalPresentationCapturesStatusBarAppearance Property
- preferredStatusBarUpdateAnimation
- setNeedsStatusBarAppearanceUpdate

Configuring a Navigation Interface

navigationItem Property
hidesBottomBarWhenPushed Property
- setToolbarItems:animated:
toolbarItems Property

Configuring Tab Bar Items

tabBarItem Property

Adding Editing Behaviors to Your View Controller

editing Property
- setEditing:animated:
- editButtonItem

Accessing the Available Key Commands

- addKeyCommand:
- removeKeyCommand:

Managing Banner Ads

canDisplayBannerAds Property
originalContentView Property

Determining Whether the View Controller is Displaying an Ad

presentingFullScreenAd Property
displayingBannerAd Property

Managing Interstitial Ads

+ prepareInterstitialAds
interstitialPresentationPolicy Property
- requestInterstitialAdPresentation
- shouldPresentInterstitialAd

Deprecated

- viewWillUnload (iOS 6.0)
- viewDidUnload (iOS 6.0)
contentSizeForViewInPopover (iOS 7.0) Property
- presentModalViewController:animated: (iOS 6.0)
- dismissModalViewControllerAnimated: (iOS 6.0)
wantsFullScreenLayout (iOS 7.0) Property
- shouldAutorotateToInterfaceOrientation: (iOS 6.0)
- rotatingHeaderView (iOS 8.0)
- rotatingFooterView (iOS 8.0)
interfaceOrientation (iOS 8.0) Property
- willRotateToInterfaceOrientation:duration: (iOS 8.0)
- willAnimateRotationToInterfaceOrientation:duration: (iOS 8.0)
- didRotateFromInterfaceOrientation: (iOS 8.0)
- willAnimateFirstHalfOfRotationToInterfaceOrientation:duration: (iOS 5.0)
- didAnimateFirstHalfOfRotationToInterfaceOrientation: (iOS 5.0)
- willAnimateSecondHalfOfRotationFromInterfaceOrientation:duration: (iOS 5.0)
searchDisplayController (iOS 8.0) Property
modalViewController (iOS 6.0) Property
- shouldAutomaticallyForwardRotationMethods (iOS 8.0)
- automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers (iOS 6.0)
- presentMoviePlayerViewControllerAnimated: (iOS 9.0)
- dismissMoviePlayerViewControllerAnimated (iOS 9.0)