LongPressGestureRecognizer class

Recognizes when the user has pressed down at the same location for a long period of time.



LongPressGestureRecognizer({Object debugOwner })
Creates a long-press gesture recognizer. [...]


debugDescription String
Returns a very short pretty description of the gesture that the recognizer looks for, like 'tap' or 'horizontal drag'.
onLongPress GestureLongPressCallback
Called when a long-press is recognized.
read / write
deadline Duration
If non-null, the recognizer will call didExceedDeadline after this amount of time has elapsed since starting to track the primary pointer.
final, inherited
debugOwner Object
The recognizer's owner. [...]
final, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
initialPosition Offset
The global location at which the primary pointer contacted the screen.
read / write, inherited
primaryPointer int
The ID of the primary pointer this recognizer is tracking.
read / write, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
state GestureRecognizerState
The current state of the recognizer. [...]
read / write, inherited
team GestureArenaTeam
The team that this recognizer belongs to, if any. [...]
read / write, inherited


didExceedDeadline() → void
Override to be notified when deadline is exceeded. [...]
handlePrimaryPointer(PointerEvent event) → void
Override to provide behavior for the primary pointer when the gesture is still possible.
acceptGesture(int pointer) → void
Called when this member wins the arena for the given pointer id.
addPointer(PointerDownEvent event) → void
Registers a new pointer that might be relevant to this gesture detector. [...]
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children. [...]
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
didStopTrackingLastPointer(int pointer) → void
Called when the number of pointers this recognizer is tracking changes from one to zero. [...]
dispose() → void
handleEvent(PointerEvent event) → void
Called when a pointer event is routed to this recognizer.
invokeCallback<T>(String name, RecognizerCallback<T> callback, { String debugReport() }) → T
Invoke a callback provided by the application, catching and logging any exceptions. [...]
@protected, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
rejectGesture(int pointer) → void
resolve(GestureDisposition disposition) → void
Resolves this recognizer's participation in each gesture arena with the given disposition.
@mustCallSuper, @protected, inherited
startTrackingPointer(int pointer) → void
Causes events related to the given pointer ID to be routed to this recognizer. [...]
@protected, inherited
stopTrackingIfPointerNoLongerDown(PointerEvent event) → void
Stops tracking the pointer associated with the given event if the event is a PointerUpEvent or a PointerCancelEvent event.
@protected, inherited
stopTrackingPointer(int pointer) → void
Stops events related to the given pointer ID from being routed to this recognizer. [...]
@protected, inherited
toDiagnosticsNode({String name, DiagnosticsTreeStyle style }) DiagnosticsNode
toString({DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this object.
toStringDeep({String prefixLineOne: '', String prefixOtherLines, DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a string representation of this node and its descendants. [...]
toStringShallow({String joiner: ', ', DiagnosticLevel minLevel: DiagnosticLevel.debug }) String
Returns a one-line detailed description of the object. [...]
toStringShort() String


operator ==(dynamic other) bool
The equality operator. [...]