UICollectionViewDelegateFlowLayout Class
Definition
Important
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Used to customize spacing and react to events in a UICollectionViewFlowLayout.
[Foundation.Protocol]
[Foundation.Register("UICollectionViewDelegateFlowLayout", false)]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 6, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public class UICollectionViewDelegateFlowLayout : UIKit.UICollectionViewDelegate, IDisposable, UIKit.IUICollectionViewDelegateFlowLayouttype UICollectionViewDelegateFlowLayout = class
inherit UICollectionViewDelegate
interface IUICollectionViewDelegateFlowLayout
interface INativeObject
interface IDisposable
interface IUICollectionViewDelegate
interface IUIScrollViewDelegate- Inheritance
- Attributes
- Implements
Remarks
Overriding methods in this class allow the application developer to control the spacing in a grid-based UICollectionViewFlowLayout.
Additionally, this delegate can be used to respond to events raised by a UICollectionViewFlowLayout.
Constructors
| UICollectionViewDelegateFlowLayout() |
Default constructor, initializes a new instance of this class. |
| UICollectionViewDelegateFlowLayout(IntPtr) |
A constructor used when creating managed representations of unmanaged objects; Called by the runtime. |
| UICollectionViewDelegateFlowLayout(NSObjectFlag) |
Constructor to call on derived classes to skip initialization and merely allocate the object. |
Properties
| Class | (Inherited from NSObject) |
| ClassHandle |
The handle for this class. (Inherited from NSObject) |
| DebugDescription |
A developer-meaningful description of this object. (Inherited from NSObject) |
| Description |
Description of the object, the Objective-C version of ToString. (Inherited from NSObject) |
| Handle |
Handle (pointer) to the unmanaged object representation. (Inherited from NSObject) |
| IsDirectBinding | (Inherited from NSObject) |
| IsProxy | (Inherited from NSObject) |
| RetainCount |
Returns the current Objective-C retain count for the object. (Inherited from NSObject) |
| Self | (Inherited from NSObject) |
| Superclass | (Inherited from NSObject) |
| SuperHandle |
Handle used to represent the methods in the base class for this NSObject. (Inherited from NSObject) |
| Zone | (Inherited from NSObject) |
Methods
| AddObserver(NSObject, NSString, NSKeyValueObservingOptions, IntPtr) |
Registers an object for being observed externally (using NSString keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject) |
| AddObserver(NSObject, String, NSKeyValueObservingOptions, IntPtr) |
Registers an object for being observed externally (using string keyPath). Observed changes are dispatched to the observer’s object ObserveValue(NSString, NSObject, NSDictionary, IntPtr) method. (Inherited from NSObject) |
| AddObserver(NSString, NSKeyValueObservingOptions, Action<NSObservedChange>) |
Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject) |
| AddObserver(String, NSKeyValueObservingOptions, Action<NSObservedChange>) |
Registers an object for being observed externally using an arbitrary method. (Inherited from NSObject) |
| AwakeFromNib() |
Called after the object has been loaded from the nib file. Overriders must call base.AwakeFromNib(). (Inherited from NSObject) |
| BeginInvokeOnMainThread(Action) | (Inherited from NSObject) |
| BeginInvokeOnMainThread(Selector, NSObject) |
Invokes asynchrously the specified code on the main UI thread. (Inherited from NSObject) |
| Bind(NSString, NSObject, String, NSDictionary) | (Inherited from NSObject) |
| Bind(String, NSObject, String, NSDictionary) |
Obsolete.
(Inherited from NSObject)
|
| BindingInfo(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingOptionDescriptions(String) |
Obsolete.
(Inherited from NSObject)
|
| BindingValueClass(String) |
Obsolete.
(Inherited from NSObject)
|
| CanFocusItem(UICollectionView, NSIndexPath) |
Whether the item at |
| CanPerformAction(UICollectionView, Selector, NSIndexPath, NSObject) |
Whether this UICollectionViewDelegate can perform the specified action on an item in the UICollectionView. (Inherited from UICollectionViewDelegate) |
| CellDisplayingEnded(UICollectionView, UICollectionViewCell, NSIndexPath) |
Indicates that the specified cell was removed from the UICollectionView. (Inherited from UICollectionViewDelegate) |
| CommitEditing() | (Inherited from NSObject) |
| CommitEditing(NSObject, Selector, IntPtr) | (Inherited from NSObject) |
| ConformsToProtocol(IntPtr) |
Invoked to determine if this object implements the specified protocol. (Inherited from NSObject) |
| Copy() |
Performs a copy of the underlying Objective-C object. (Inherited from NSObject) |
| DangerousAutorelease() | (Inherited from NSObject) |
| DangerousRelease() | (Inherited from NSObject) |
| DangerousRetain() | (Inherited from NSObject) |
| DecelerationEnded(UIScrollView) |
Indicates that deceleration from a scrolling event has completed. (Inherited from UICollectionViewDelegate) |
| DecelerationStarted(UIScrollView) |
Indicates that deceleration from a scrolling event has begun. (Inherited from UICollectionViewDelegate) |
| DidChange(NSKeyValueChange, NSIndexSet, NSString) |
Indicates a change occurred to the indexes for a to-many relationship. (Inherited from NSObject) |
| DidChange(NSString, NSKeyValueSetMutationKind, NSSet) | (Inherited from NSObject) |
| DidChangeAdjustedContentInset(UIScrollView) |
Method that is called when the inset values change. (Inherited from UICollectionViewDelegate) |
| DidChangeValue(String) |
Indicates that a change occurred on the specified key. (Inherited from NSObject) |
| DidUpdateFocus(UICollectionView, UICollectionViewFocusUpdateContext, UIFocusAnimationCoordinator) |
Delegate method called shortly after focus has changed to a new UIView. (Inherited from UICollectionViewDelegate) |
| DidZoom(UIScrollView) |
Indicates that zooming has occurred. (Inherited from UICollectionViewDelegate) |
| Dispose() |
Releases the resources used by the NSObject object. (Inherited from NSObject) |
| Dispose(Boolean) |
Releases the resources used by the NSObject object. (Inherited from NSObject) |
| DoesNotRecognizeSelector(Selector) |
Indicates that this object does not recognize the specified selector. (Inherited from NSObject) |
| DraggingEnded(UIScrollView, Boolean) |
Indicates that dragging has completed. (Inherited from UICollectionViewDelegate) |
| DraggingStarted(UIScrollView) |
Indicates that dragging has begun. (Inherited from UICollectionViewDelegate) |
| Equals(NSObject) | (Inherited from NSObject) |
| Equals(Object) | (Inherited from NSObject) |
| ExposedBindings() | (Inherited from NSObject) |
| GetBindingInfo(NSString) | (Inherited from NSObject) |
| GetBindingOptionDescriptions(NSString) | (Inherited from NSObject) |
| GetBindingValueClass(NSString) | (Inherited from NSObject) |
| GetDictionaryOfValuesFromKeys(NSString[]) |
Retrieves the values of the specified keys. (Inherited from NSObject) |
| GetHashCode() |
Generates a hash code for the current instance. (Inherited from NSObject) |
| GetIndexPathForPreferredFocusedView(UICollectionView) |
When overridden, allows the developer to specify the item that should initially receive focus. (Inherited from UICollectionViewDelegate) |
| GetInsetForSection(UICollectionView, UICollectionViewLayout, nint) |
The margins to apply to content in the specified section. |
| GetMethodForSelector(Selector) | (Inherited from NSObject) |
| GetMinimumInteritemSpacingForSection(UICollectionView, UICollectionViewLayout, nint) |
The spacing between items in the rows or columns of a section. |
| GetMinimumLineSpacingForSection(UICollectionView, UICollectionViewLayout, nint) |
The spacing between rows or columns of a section. |
| GetNativeField(String) |
Obsolete.
(Inherited from NSObject)
|
| GetNativeHash() | (Inherited from NSObject) |
| GetReferenceSizeForFooter(UICollectionView, UICollectionViewLayout, nint) |
The size of the footer view for the specified section. |
| GetReferenceSizeForHeader(UICollectionView, UICollectionViewLayout, nint) |
The size of the header view for the specified section. |
| GetSizeForItem(UICollectionView, UICollectionViewLayout, NSIndexPath) |
The size of the specified item's cell. |
| GetTargetContentOffset(UICollectionView, CGPoint) |
When overridden, allows the developer to modify the content offset for layout and animation changes. (Inherited from UICollectionViewDelegate) |
| GetTargetIndexPathForMove(UICollectionView, NSIndexPath, NSIndexPath) |
When overridden, allows the developer to modify the final location of a moved item. (For instance, to disallow a move to a particular |
| Init() | (Inherited from NSObject) |
| InitializeHandle(IntPtr, String) | (Inherited from NSObject) |
| InitializeHandle(IntPtr) | (Inherited from NSObject) |
| Invoke(Action, Double) | (Inherited from NSObject) |
| Invoke(Action, TimeSpan) | (Inherited from NSObject) |
| InvokeOnMainThread(Action) | (Inherited from NSObject) |
| InvokeOnMainThread(Selector, NSObject) |
Invokes synchrously the specified code on the main UI thread. (Inherited from NSObject) |
| IsEqual(NSObject) | (Inherited from NSObject) |
| IsKindOfClass(Class) | (Inherited from NSObject) |
| IsMemberOfClass(Class) | (Inherited from NSObject) |
| ItemDeselected(UICollectionView, NSIndexPath) |
Indicates that the item at the specified index was deselected. (Inherited from UICollectionViewDelegate) |
| ItemHighlighted(UICollectionView, NSIndexPath) |
Indicates that the specified item was highlighted. (Inherited from UICollectionViewDelegate) |
| ItemSelected(UICollectionView, NSIndexPath) |
Indicates that the item at the specified index was selected. (Inherited from UICollectionViewDelegate) |
| ItemUnhighlighted(UICollectionView, NSIndexPath) |
Indicates that the item at the specified index had its highlight removed. (Inherited from UICollectionViewDelegate) |
| MarkDirty() |
Promotes a regular peer object (IsDirectBinding is true) into a toggleref object. (Inherited from NSObject) |
| MutableCopy() |
Creates a mutable copy of the specified NSObject. (Inherited from NSObject) |
| ObjectDidEndEditing(NSObject) | (Inherited from NSObject) |
| ObserveValue(NSString, NSObject, NSDictionary, IntPtr) |
Indicates that the value at the specified keyPath relative to this object has changed. (Inherited from NSObject) |
| PerformAction(UICollectionView, Selector, NSIndexPath, NSObject) |
Performs the specified action on an item in the UICollectionView. (Inherited from UICollectionViewDelegate) |
| PerformSelector(Selector, NSObject, Double, NSString[]) | (Inherited from NSObject) |
| PerformSelector(Selector, NSObject, Double) |
Invokes the selector on the current instance and if the |
| PerformSelector(Selector, NSObject, NSObject) | (Inherited from NSObject) |
| PerformSelector(Selector, NSObject) | (Inherited from NSObject) |
| PerformSelector(Selector, NSThread, NSObject, Boolean, NSString[]) | (Inherited from NSObject) |
| PerformSelector(Selector, NSThread, NSObject, Boolean) | (Inherited from NSObject) |
| PerformSelector(Selector) | (Inherited from NSObject) |
| PrepareForInterfaceBuilder() | (Inherited from NSObject) |
| RemoveObserver(NSObject, NSString, IntPtr) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject) |
| RemoveObserver(NSObject, NSString) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject) |
| RemoveObserver(NSObject, String, IntPtr) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath and context. (Inherited from NSObject) |
| RemoveObserver(NSObject, String) |
Stops the specified observer from receiving further notifications of changed values for the specified keyPath. (Inherited from NSObject) |
| RespondsToSelector(Selector) |
Whether this object recognizes the specified selector. (Inherited from NSObject) |
| ScrollAnimationEnded(UIScrollView) |
Indicates that animation relating to a scrolling event has completed. (Inherited from UICollectionViewDelegate) |
| Scrolled(UIScrollView) |
Indicates that scrolling occurred. (Inherited from UICollectionViewDelegate) |
| ScrolledToTop(UIScrollView) |
Indicates that the UICollectionView has scrolled to its beginning. (Inherited from UICollectionViewDelegate) |
| SetNativeField(String, NSObject) |
Obsolete.
(Inherited from NSObject)
|
| SetNilValueForKey(NSString) |
Sets the value of the specified key to null. (Inherited from NSObject) |
| SetValueForKey(NSObject, NSString) |
Sets the value of the property specified by the key to the specified value. (Inherited from NSObject) |
| SetValueForKeyPath(IntPtr, NSString) |
A constructor used when creating managed representations of unmanaged objects; Called by the runtime. (Inherited from NSObject) |
| SetValueForKeyPath(NSObject, NSString) |
Sets the value of a property that can be reached using a keypath. (Inherited from NSObject) |
| SetValueForUndefinedKey(NSObject, NSString) |
Indicates an attempt to write a value to an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject) |
| SetValuesForKeysWithDictionary(NSDictionary) |
Sets the values of this NSObject to those in the specified dictionary. (Inherited from NSObject) |
| ShouldDeselectItem(UICollectionView, NSIndexPath) |
Whether the specified item should be deselected. (Inherited from UICollectionViewDelegate) |
| ShouldHighlightItem(UICollectionView, NSIndexPath) |
Whether the specified item should be highlighted during tracking. (Inherited from UICollectionViewDelegate) |
| ShouldScrollToTop(UIScrollView) |
Whether the UICollectionView should scroll to its beginning. (Inherited from UICollectionViewDelegate) |
| ShouldSelectItem(UICollectionView, NSIndexPath) |
Whether the specified item should be selected. (Inherited from UICollectionViewDelegate) |
| ShouldShowMenu(UICollectionView, NSIndexPath) |
Whether an action menu should be displayed for the specified item. (Inherited from UICollectionViewDelegate) |
| ShouldSpringLoadItem(UICollectionView, NSIndexPath, IUISpringLoadedInteractionContext) |
Method that is called to indicate whether the identified item should springload in the specified context. (Inherited from UICollectionViewDelegate) |
| ShouldUpdateFocus(UICollectionView, UICollectionViewFocusUpdateContext) |
Called prior to a cell in the |
| SupplementaryViewDisplayingEnded(UICollectionView, UICollectionReusableView, NSString, NSIndexPath) |
Indicates that the specified supplementary view was removed from the UICollectionView. (Inherited from UICollectionViewDelegate) |
| ToString() |
Returns a string representation of the value of the current instance. (Inherited from NSObject) |
| TransitionLayout(UICollectionView, UICollectionViewLayout, UICollectionViewLayout) |
A custom transition layout for use when moving between selected layouts. (Inherited from UICollectionViewDelegate) |
| Unbind(NSString) | (Inherited from NSObject) |
| Unbind(String) |
Obsolete.
(Inherited from NSObject)
|
| ValueForKey(NSString) |
Returns the value of the property associated with the specified key. (Inherited from NSObject) |
| ValueForKeyPath(NSString) |
Returns the value of a property that can be reached using a keypath. (Inherited from NSObject) |
| ValueForUndefinedKey(NSString) |
Indicates an attempt to read a value of an undefined key. If not overridden, raises an NSUndefinedKeyException. (Inherited from NSObject) |
| ViewForZoomingInScrollView(UIScrollView) |
The UIView to use when zooming is about to occur. (Inherited from UICollectionViewDelegate) |
| WillChange(NSKeyValueChange, NSIndexSet, NSString) |
Indicates that the values of the specified indices in the specified key are about to change. (Inherited from NSObject) |
| WillChange(NSString, NSKeyValueSetMutationKind, NSSet) | (Inherited from NSObject) |
| WillChangeValue(String) |
Indicates that the value of the specified key is about to change. (Inherited from NSObject) |
| WillDisplayCell(UICollectionView, UICollectionViewCell, NSIndexPath) |
The |
| WillDisplaySupplementaryView(UICollectionView, UICollectionReusableView, String, NSIndexPath) |
The supplementary |
| WillEndDragging(UIScrollView, CGPoint, CGPoint) |
Indicates that dragging is about to complete. (Inherited from UICollectionViewDelegate) |
| ZoomingEnded(UIScrollView, UIView, nfloat) |
Indicates that zooming has completed. (Inherited from UICollectionViewDelegate) |
| ZoomingStarted(UIScrollView, UIView) |
Indicates that zooming has begun. (Inherited from UICollectionViewDelegate) |