ASDisplayNode(Beta) Category Reference
| Declared in | ASDisplayNode+Beta.h |
|---|
+ suppressesInvalidCollectionUpdateExceptions
ASTableView and ASCollectionView now throw exceptions on invalid updates like their UIKit counterparts. If YES, these classes will log messages on invalid updates rather than throwing exceptions.
+ (BOOL)suppressesInvalidCollectionUpdateExceptionsDiscussion
Note that even if AsyncDisplayKit’s exception is suppressed, the app may still crash as it proceeds with an invalid update.
This property defaults to NO. It will be removed in a future release.
Declared In
ASDisplayNode+Beta.h
– recursivelyEnsureDisplaySynchronously:
Recursively ensures node and all subnodes are displayed.
- (void)recursivelyEnsureDisplaySynchronously:(BOOL)synchronouslyDeclared In
ASDisplayNode+Beta.h
willDisplayNodeContentWithRenderingContext
allow modification of a context before the node’s content is drawn
@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier willDisplayNodeContentWithRenderingContextDiscussion
Set the block to be called after the context has been created and before the node’s content is drawn. You can override this to modify the context before the content is drawn. You are responsible for saving and restoring context if necessary. Restoring can be done in contextDidDisplayNodeContent This block can be called from any thread and it is unsafe to access any UIKit main thread properties from it.
Declared In
ASDisplayNode+Beta.h
didDisplayNodeContentWithRenderingContext
allow modification of a context after the node’s content is drawn
@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier didDisplayNodeContentWithRenderingContextDeclared In
ASDisplayNode+Beta.h
measurementOptions
A bitmask representing which actions (layout spec, layout generation) should be measured.
@property (nonatomic, assign) ASDisplayNodePerformanceMeasurementOptions measurementOptionsDeclared In
ASDisplayNode+Beta.h
performanceMeasurements
A simple struct representing performance measurements collected.
@property (nonatomic, assign, readonly) ASDisplayNodePerformanceMeasurements performanceMeasurementsDeclared In
ASDisplayNode+Beta.h
– placeholderShouldPersist
Currently used by ASNetworkImageNode and ASMultiplexImageNode to allow their placeholders to stay if they are loading an image from the network. Otherwise, a display pass is scheduled and completes, but does not actually draw anything - and ASDisplayNode considers the element finished.
- (BOOL)placeholderShouldPersistDeclared In
ASDisplayNode+Beta.h
– hierarchyDisplayDidFinish
Indicates that the receiver and all subnodes have finished displaying. May be called more than once, for example if the receiver has a network image node. This is called after the first display pass even if network image nodes have not downloaded anything (text would be done, and other nodes that are ready to do their final display). Each render of every progressive jpeg network node would cause this to be called, so this hook could be called up to 1 + (pJPEGcount * pJPEGrenderCount) times. The render count depends on how many times the downloader calls the progressImage block.
- (void)hierarchyDisplayDidFinishDeclared In
ASDisplayNode+Beta.h
+ setRangeModeForMemoryWarnings:
Only ASLayoutRangeModeVisibleOnly or ASLayoutRangeModeLowMemory are recommended. Default is ASLayoutRangeModeVisibleOnly, because this is the only way to ensure an application will not have blank / flashing views as the user navigates back after a memory warning. Apps that wish to use the more effective / aggressive ASLayoutRangeModeLowMemory may need to take steps to mitigate this behavior, including: restoring a larger range mode to the next controller before the user navigates there, enabling .neverShowPlaceholders on ASCellNodes so that the navigation operation is blocked on redisplay completing, etc.
+ (void)setRangeModeForMemoryWarnings:(ASLayoutRangeMode)rangeModeDeclared In
ASDisplayNode+Beta.h
– _logEventWithBacktrace:format:
The primitive event tracing method. You shouldn’t call this. Use the ASDisplayNodeLogEvent macro instead.
- (void)_logEventWithBacktrace:(NSArray<NSString*> *)backtrace format:(NSString *)format, ...Declared In
ASDisplayNode+Beta.h
eventLog
The most recent trace events for this node. Max count is ASDISPLAYNODE_EVENTLOG_CAPACITY.
@property (readonly, copy) NSArray *eventLogDeclared In
ASDisplayNode+Beta.h