Android Studio Question posted in
The official documentation can be found here.

Android Studio – List of widget does not show on screen

I have this code that will get a list of reminders in DB and show it on the screen. It works fine with the reminder list. The problem is when the list is empty (there is no reminder), i want it to show some text like "There is no reminder". So i tried with Column, Text widget, i wrapped them in a list like below but nothing shown on screen.

If i remove the [], it is error A value of type ‘Card’ can’t be returned from the method ‘buildReminderList’ because it has a return type of ‘List’.

Does anyone know how to make a text like "There is no reminder" show in the case when "Upcoming" list is empty.

List<Widget> buildReminderList(List<Reminder> reminders) {
    debugPrint(reminders.length.toString());
    if (reminders != null)
      return reminders.map((Reminder reminder)
      => ListTile()).toList();
    else
      return [Card(
          child: ListTile(
            title: Text("There is no reminder", style: TextStyle(fontWeight: FontWeight.bold)),
          )
      )];
  }

enter image description here

Tags:

2

Answers


  1. 0

    Simply replace List<Widget> with Widget:-

    Widget buildReminderList(List<Reminder> reminders) {
    debugPrint(reminders.length.toString());
    if (reminders != null)
      return reminders.map((Reminder reminder)
      => ListTile()).toList();
    else
      return Text("There is no reminder", style: TextStyle(fontWeight: FontWeight.bold));
  }
    Login or Signup to reply.
  2. 0

    Result

    output

    try this way

    import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';


class Test extends StatelessWidget {
  List<Widget> buildReminderList() {
    return [
      Card(
        child: ListTile(
          title: Text("There is no reminder",
              style: TextStyle(fontWeight: FontWeight.bold)),
        ),
      ),
    ];
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: ListView(
          children: [
            ...buildReminderList().toList(),
          ],
        ),
      ),
    );
  }
}
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search