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 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.
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).
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