ListView of horizontal scroll button issue

Question

Hi I'm working on the Flutter project I'm having an issue with the flutter ListView button, So right now it looks the same what I wanted but it doesn't work how I wanted

So if you see the above image if I click then tick overlay appears for that I need to setState() but the issue is right now to get that overlay tick I need to tap twice I don't understand how to fix this issue or is there any widget button which onclick overlay I checked most of them but most of them didn't work or I was not aware of? Inside container, I have 14 same columns with numbers 1-14 I'll make it more compact but first I need to fix this issue here is the code.

`bool _pressed = false;
 int _btnIndex = 0;
 TabBarView(children: <Widget>[
    Container(
      height: 300,
      // padding: EdgeInsets.only(bottom: 10),
      padding: EdgeInsets.all(10),
      color: Colors.white,
      child: ListView(
      padding: EdgeInsets.all(6),
      scrollDirection: Axis.horizontal,
      children: <Widget>[
        Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: <Widget>[
            Container(
              alignment: Alignment.center,
              child: Padding(
                padding: const EdgeInsets.all(6.0),
                child: Material(
                  elevation: 4.0,
                  shape: CircleBorder(),
                  clipBehavior: Clip.hardEdge,
                  color: !_pressed && _btnIndex == 1
                      ? Colors.red
                      : Colors.white54,
                  child: Ink.image(
                    image: AssetImage('assets/images/colosseum.jpg'),
                    fit: BoxFit.cover,
                    colorFilter: _pressed && _btnIndex == 1
                        ? ColorFilter.mode(
                            Colors.black87,
                            BlendMode.darken,
                          )
                        : null,
                    width: 60.0,
                    height: 60.0,
                    child: InkWell(
                      // splashColor: Colors.green,
                      focusColor: Colors.red,
                      highlightColor: Colors.white60,
                      // overlayColor: MaterialStateColor(),
                      child: _pressed && _btnIndex == 1
                          ? Icon(
                              Icons.check,
                              color: Colors.white,
                            )
                          : null,
                      // onDoubleTap: () {
                      //   _pressed = !_pressed;
                      // },
                      onTap: () {
                        setState(() {
                          _pressed = !_pressed;
                          _btnIndex = 1;
                        });
                        // _pressed = true;
                        print('I tapped no 1');
                      },
                    ),
                  ),
                ),
              ),
            ),
            Container(
              alignment: Alignment.center,
              child: Text('10'),
            ),
          ],
        ),
      ]),
     ),
  ]);`

rishabh mistry · Accepted Answer · 2020-09-29 10:37:57Z

1

just use Listview.builder for this and inside that use GestureDetector inside Builder to change selected item

first take a variable to track selected index

int selected;

then make a listView Builder Widget

ListView.builder(
 itemCount:5,
 scrollDirection: Axis.horizontal,
 itemBuilder:(ctx,index){

 return GestureDetector(
  onTap:(){
   selected = index;
   setState((){});
   }
  child: YourWidget(isSelected:this.selected == index);
 );
 }

)

just write logic for displaying tick in YourWidget image when isSelected is true

answered Sep 29, 2020 at 10:37

rishabh mistry

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Adnan Kazi · Accepted Answer · 2020-09-29 10:19:27Z

0

Hey @user2572661 may be when you touch container may not interact as what you want you can use ListView.builder() with scroll direction horizontal also there is a Widget you can use it onTap: to change state or logic call GestureDetector(). Although can you please share some more code so that i can understand and rectify your problem.

answered Sep 29, 2020 at 10:19

Adnan Kazi

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