CODEWITHSUNDEEP
flutterdartflutter-layout
Gbenga B Ayannuga
Gbenga B Ayannuga

Reputation: 2792

Flutter GestureDetector onTapRight & ontapLeft

i have read the flutter documentation about GestureDetector and i can only see onTapDown & onTapUp

and i believe if there is up and Down there will be Right and Left

how can i achieve onTapRight and onTapLeft

Upvotes: 0

Views: 777

Answers (2)

Gbenga B Ayannuga
Gbenga B Ayannuga

Reputation: 2792

thanks to @L.Gangemi that gave me the idea of what to use....

i solved this by this sample code

 onTapUp: (details) {
                                      if (details.localPosition.direction >
                                          1.0) {
                                        print('Left');
                                      }
                                      if (details.localPosition.direction <
                                          1.0) {
                                        print('Right');
                                      }
                                    },

Upvotes: 1

L. Gangemi
L. Gangemi

Reputation: 3290

onTapDown & onTapUp do not refer to the area/position where you press, but they do refer to:

onTapDown: The moment your finger actually touch the screen

onTapUp: The moment your finger leave the screen

From the docs:

onTapDown: A pointer that might cause a tap with a primary button has contacted the screen at a particular location.

onTapUp: A pointer that will trigger a tap with a primary button has stopped contacting the screen at a particular location

To achieve right or left tap, you could use a Stack widget to overlay a row with 2 Gesture dector widgets.

DOCS:

onTapDown GestureTapDownCallback

Upvotes: 2

Related Questions