如何处理动态窗口小部件的onTap？

Question

我有一个下拉菜单，当我选择一个或多个项目时，它将显示一张卡或一张卡列表，如图像中的第一个，但是当我有两张卡并按编辑时，就会出现问题按钮，两张卡片都将在图像的第二部分更改。

Image

这是我目前正在执行的代码。这些列表是在Change的下拉菜单上创建的。

List<Widget> _prepareTechnologies(List<Technology> _techList, List<TextEditingController> _textControllers){
List<Widget> widgets = new List();
final size = MediaQuery.of(context).size;    
for(var i=0; i<_techList.length;i++){
  widgets.add(
    Container(
      padding: EdgeInsets.fromLTRB(10.0, 10.0, 10.0, 10.0),
      height: size.height*0.1,
      decoration: BoxDecoration(
        color: Colors.white,
        border: Border.all(color: Colors.black38),
        boxShadow: <BoxShadow>[
          BoxShadow(
            color: Colors.black26,
          )
        ]
      ),
      child: Row(        
        crossAxisAlignment: CrossAxisAlignment.center,
        children: <Widget>[
          CircleAvatar(
            radius:28,
            backgroundImage: AssetImage('assets/no-image.png'),          
          ),
          SizedBox(width: 8.0),
          Text(_techList[i].technology, style: TextStyle(color: Colors.blue, fontSize: 20),),
          Expanded(child: SizedBox(),),
          Align(alignment: Alignment.center, child: Text('Dominio',)),
          SizedBox(width: 5.0),
          (_boolValues[i]) ? _savedDomain(_textControllers[i],_boolValues, _techList[i].technologyId, _boolValues2[i]):_domainPercentage(_textControllers[i], _boolValues, _techList[i].technologyId, _boolValues2[i])  ,
        ],
      ),
    )
  );
  widgets.add(SizedBox(height:10.0));
}
return widgets;
}
Widget _domainPercentage(TextEditingController _controller, bool value, String tech, bool value2){    
return Row(
  children: <Widget>[
    Container(
      padding: EdgeInsets.only(left:6,),
      height: 24,
      width: 45,
      decoration: BoxDecoration(
        border: Border(
          top: BorderSide(color: Colors.grey),
          bottom: BorderSide(color: Colors.grey),
          left: BorderSide(color: Colors.grey),
        ),                         
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Flexible(
            child: TextFormField(
              controller: _controller,
              onChanged: (value){
                setState(() {
                  value2=!value2;
                });

              },
              style: TextStyle(fontSize: 14),
              textAlign: TextAlign.center ,
              keyboardType: TextInputType.number,
              inputFormatters: [
                BlacklistingTextInputFormatter(RegExp('[.]')),
                LengthLimitingTextInputFormatter(3)
              ],
              decoration: InputDecoration(
              focusedBorder: InputBorder.none,
              enabledBorder: InputBorder.none,
              ),
            ),
          ),
          Text('%'),
        ],
      )
    ),
    GestureDetector(
      onTap: (value2) ? () => _registerTechnology(_controller, tech, value) : null,                
      child: Container(
        height: 24,
          decoration: BoxDecoration(
            border: Border.all(color: Colors.orangeAccent)
          ),
          child: Icon(Icons.edit, color: Colors.orangeAccent,),
        ),
    )
  ],
);
}
Widget _savedDomain(TextEditingController _controller,bool value, String tech, bool value2){
return Row(
  children: <Widget>[
   Container(
      padding: EdgeInsets.only(left:3,),
      height: 45,
      width: 50,
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          Flexible(
            child: TextFormField(
              controller: _controller,
              onChanged: (value){
                setState(() {
                  value2=!value2;                      
                });
              },
              style: TextStyle(fontSize: 20, color: Colors.green),
              textAlign: TextAlign.center ,
              keyboardType: TextInputType.number,
              inputFormatters: [
                BlacklistingTextInputFormatter(RegExp('[.]')),
                LengthLimitingTextInputFormatter(3)
              ],
              decoration: InputDecoration(
                hintText: '0',
              focusedBorder: InputBorder.none,
                enabledBorder: InputBorder.none,
              ),
            ),
          ),
          Text('%', style: TextStyle(fontSize:20, color: Colors.green),),
        ],
      )
    ),
    GestureDetector(
      onTap: (value2) ? () => _registerTechnology(_controller, tech, value)  : null,            
      child: Container(
        height: 24,              
          child: Icon(Icons.edit, color: Colors.grey,),
        ),
    )
  ],
);
}
void _registerTechnology(TextEditingController _controller, String tech, bool value)async{
final result = await widget.studentProvider.registerTechnology(widget.student.userId, tech, int.parse(_controller.text));
print(result);
if(result =='ok'){
  setState(() {
    value=!value;
  });
}

任何建议，评论或想法都将受到欢迎，因为我也想提高自己的开发技能。 预先感谢