How to detect swipe in flutter

Sam Cromer picture Sam Cromer · Mar 7, 2019 · Viewed 21.8k times · Source

I've tried using the swipe detector plugin for flutter to achieve navigating to a new screen on swipe right but it's not working, no errors are thrown and the breakpoint is never hit when I debug it. I looked into the GestureDector but I wasn't sure it would work for a swipe right scenario, we want it to navigate to a screen when anywhere on the screen is swiped right.

Here's my code using the plugin

 @override
 Widget build(BuildContext context){
return new Scaffold(
 appBar : LBAppBar().getAppBar(),
  //drawer: new LBDrawer().getDrawer(),
 body:  Container(
decoration: BoxDecoration(
    gradient: new LinearGradient(
        colors: [Color.fromRGBO(1,89,99, 1.0), Colors.grey],
        begin: Alignment.bottomLeft,
        end: Alignment.topRight
    )
),
 child: 
 SwipeDetector(
     onSwipeRight: () {
       Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new WidgetsPage())
        ); },
  child: Column(
  mainAxisAlignment: MainAxisAlignment.center,    
  children:[
    Row(
            children: [
          Container(
            margin: EdgeInsets.only(left: 20.0,top: 10.0, bottom: 10.0, right:30.0),
            child: Column(
  children: <Widget>[



            Text("Hi ${user.firstName}, Today is " + formatDate(), style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.bold, fontSize: 19.0 
 )),




        ],

         ),
                 ),
                  ]
            ),

      Row(
        //ROW 1
        children: [
          Container(
            margin: EdgeInsets.only(left: 30.0,top: 60.0, bottom: 30.0, right:30.0),
            child: Column(
      children: <Widget>[
           GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.checkSquare,
                 size: 50.0,
                 color: Colors.white70,
         ),
              onTap: () {
                        Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new CheckIn()));
                      }),
                Text("Check In", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
  ],
 ),
              ),
              Container(
           margin: EdgeInsets.only(left: 50.0,top: 60.0, bottom: 30.0, right:30.0),
                child: Column(
      children: <Widget>[
           GestureDetector(

                 child: Icon(
                 FontAwesomeIcons.list,
                 size: 50.0,
                  color: Colors.white70,
         ),
              onTap: () {
                    Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new DayAtAGlance()));
                      }),
            Text("My Day", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
],
 ),
               ),
            Container(
           margin: EdgeInsets.only(left: 30.0,top: 60.0, bottom: 30.0, right:30.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.phone,
                 size: 45.0,
                  color: Colors.white70,
         ),
              onTap: () {
                    Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new CommunicationLinks()));
                      }),
              Text("Communication", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
  ],
 ),
             ),
             ]
              ),
         Row(//ROW 2
          children: [
        Container(
           margin: EdgeInsets.only(left: 32.0,top: 50.0, bottom: 30.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.dollarSign,
                 size: 50.0,
                  color: Colors.white70,
           ),
              onTap: () {
                   Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new Budget()));
                      }),
            Text("Budget", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
],
 ),

              ),
        Container(
           margin: EdgeInsets.only(left: 75.0, top: 50.0, bottom: 30.0, right: 30.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.trophy,
                 size: 50.0,
                  color:  Colors.white70,
         ),
              onTap: () {
                    print("Pressed");
                      }),
            Text("Goals", style: new TextStyle( color:  Colors.white70, fontWeight: FontWeight.normal ))
],
),

            ),
         Container(
           margin: EdgeInsets.only(left: 50.0, top: 50.0, bottom: 30.0, right: 20.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.calendar,
                 size: 50.0,
                  color: Colors.white70,
         ),
              onTap: () {

                   Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new CalendarsPage()));
                      }),
            Text("Calendar", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
  ],
),
            )
         ]),
      Row(// ROW 3
          children: [
        Container(
           margin: EdgeInsets.only(left: 30.0, top: 50.0, bottom: 30.0, right: 30.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.comments,
                 size: 50.0,
                  color: Colors.white70,
         ),
              onTap: () {
                    print("Pressed");
                      }),
            Text("Community", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
  ],
),

            ),
        Container(
           margin: EdgeInsets.only(left: 20.0, top: 50.0, bottom: 30.0, right: 20.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.shoppingCart,
                 size: 50.0,
                 color: Colors.white70,
         ),
              onTap: () {
                     Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new ShoppingList()));
                      }),
            Text("Shopping", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.normal ))
  ],
),

              ),
          Container(
           margin: EdgeInsets.only(left: 50.0, top: 50.0, bottom: 30.0, right: 40.0),
            child: Column(
  children: <Widget>[
       GestureDetector(
                 child: Icon(
                 FontAwesomeIcons.solidCheckSquare,
                 size: 50.0,
                  color: Colors.white70,
         ),
              onTap: () {
                    Navigator.of(context).push(new MaterialPageRoute(builder: (BuildContext context) => new CheckOut()));
                      }),
            Text("Check Out", style: new TextStyle( color: Colors.white70, fontWeight: FontWeight.bold ))
],
),

            ),
      ]),
    ],
      ),
   )


 )


   );

Answer

CopsOnRoad picture CopsOnRoad · Mar 7, 2019

Wrap your Widget in GestureDetector and use onPanUpdate like this:

GestureDetector(onPanUpdate: (details) {
  if (details.delta.dx > 0) {
    // swiping in right direction
  }
});