handleLongPressEnd method
Called when the pointer stops contacting the screen after a long-press by a primary button in behavior.
Implementation
@override
void handleLongPressEnd(LongPressEndDetails details) {
  _hideTrackball();
}Called when the pointer stops contacting the screen after a long-press by a primary button in behavior.
@override
void handleLongPressEnd(LongPressEndDetails details) {
  _hideTrackball();
}