cpd/lib/widgets/listview.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:cpd/model/habit_list.dart';

class MyListView extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      shrinkWrap: true,
      padding: EdgeInsets.zero,
      itemCount: habits.length,
      itemBuilder: (BuildContext context, int index) {
        return Padding(
          padding: const EdgeInsets.symmetric(vertical: 5, horizontal: 10),
          child: Card(
            color: index % 2 == 0 ? Colors.green[300] : Colors.green[100],
            child: Dismissible(
              key: Key(habits[index].title),
              background: Container(
                color: Colors.red,
                alignment: Alignment.centerLeft,
                child: const Padding(
                  padding: EdgeInsets.only(left: 16),
                  child: Row(
                    children: [
                      Icon(Icons.delete),
                    ],
                  ),
                ),
              ),
              onDismissed: (direction) {
                ScaffoldMessenger.of(context).showSnackBar(
                  SnackBar(content: Text("${habits[index].title} was dismissed"))
                );
                habits.removeAt(index);
                print("Das Widget wurde gelöscht: ${habits[index].title}");
              },
              child: ListTile(
                title: Text(habits[index].title),
                subtitle: Text(habits[index].subtitle ?? ''),
                trailing: habits[index].icon,
                leading: Checkbox(
                  value: habits[index].isComplete,
                  onChanged: (value) {
                    if (value == false) {
                      print("decrease counter");
                    } else {
                      print("increase counter");
                    }
                  },
                ),
              ),
            ),
          ),
        );
      },
    );
  }
}