addListener method Null safety Adds a listener callback that is called whenever a new concrete ImageInfo object is available or an error is reported . If a concrete image is already available, or if an error has been already reported, this object will notify the listener synchronously.
Read moreHow do you add a listener in flutter?
“add click listener in flutter” Code Answer’s
Read moreWhat is a listener in flutter?
A widget that calls callbacks in response to common pointer events . It listens to events that can construct gestures, such as when the pointer is pressed, moved, then released or canceled.
Read moreWhat does GestureDetector do in Flutter?
GestureDetector is a non-visual widget primarily used for detecting the user’s gesture . To identify a gesture targeted on a widget, the widget can be placed inside GestureDetector widget.
Read moreWhat is GestureDetector widget?
GestureDetector class Null safety. A widget that detects gestures . Attempts to recognize gestures that correspond to its non-null callbacks. If this widget has a child, it defers to that child for its sizing behavior.
Read moreWhat is GestureDetector?
android.view.GestureDetector. Detects various gestures and events using the supplied MotionEvent s . The OnGestureListener callback will notify users when a particular motion event has occurred. This class should only be used with MotionEvent s reported via touch (don’t use for trackball events).
Read moreWhat is the difference between InkWell and GestureDetector?
The main difference between InkWell and GestureDetector lies in Material widget . InkWell must have a Material Widget as an ancestor. However, there is no such compulsion for GestureDetector widget. Otherwise, in many ways, these two widgets share common features.
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