How can I add multiple object references of a class to a list in flutter?

Question

I have some object references of a class like this:

Patient patientOne = Patient('Person A', 'https://images.unsplash.com/photo-1545996124-0501ebae84d0?ixid=MXwxMjA3fDB8MHxzZWFyY2h8OHx8aHVtYW58ZW58MHx8MHw%3D&ixlib=rb-1.2.1&w=1000&q=80',
      8, 2, 'Pending', '10-08-2015', true);
  Patient patientTwo = Patient('Person B', 'https://images.unsplash.com/photo-1544005313-94ddf0286df2?ixid=MXwxMjA3fDB8MHxzZWFyY2h8MTF8fGh1bWFufGVufDB8fDB8&ixlib=rb-1.2.1&w=1000&q=80',
      8, 5, 'Cancel', '23-12-2019', false);
  Patient patientThree = Patient('Person C', 'https://images.unsplash.com/photo-1554151228-14d9def656e4?ixid=MXwxMjA3fDB8MHxzZWFyY2h8NHx8aHVtYW58ZW58MHx8MHw%3D&ixlib=rb-1.2.1&w=1000&q=80',
      8, 7, 'Cancel', '01-02-2019', false);
  Patient patientFour = Patient('Person D', 'https://upload.wikimedia.org/wikipedia/commons/e/ec/Woman_7.jpg',
      8, 4, 'Pending', '20-09-2018', true);
  Patient patientFive = Patient('Person E', 'https://cdn.pixabay.com/photo/2017/08/07/14/15/portrait-2604283__340.jpg',
      8, 6, 'Pending', '28-04-2017', false);

I want to store those reference variables (patientOne , patientTwo ... patientFive ) into a list. How to do that ?

David Sedlář · Accepted Answer · 2021-02-01 16:30:44Z

2

final List<Patient> patients = <Patient>[];
patients.addAll([patientOne,patientTwo,patientThree,...]);

or

final List<Patient> patients = [
Patient('Person A', 'https://images.unsplash.com/photo-1545996124-0501ebae84d0?ixid=MXwxMjA3fDB8MHxzZWFyY2h8OHx8aHVtYW58ZW58MHx8MHw%3D&ixlib=rb-1.2.1&w=1000&q=80',
      8, 2, 'Pending', '10-08-2015', true),

Patient('Person A', 'https://images.unsplash.com/photo-1545996124-0501ebae84d0?ixid=MXwxMjA3fDB8MHxzZWFyY2h8OHx8aHVtYW58ZW58MHx8MHw%3D&ixlib=rb-1.2.1&w=1000&q=80',
      8, 2, 'Pending', '10-08-2015', true)
,...
] ;

answered Feb 1, 2021 at 16:30

David Sedlář

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4 Comments

sushree soma mohanty Over a year ago

I was trying the first one and at "patients" its showing like "The name of a constructor must match the name of the enclosing class." @David

David Sedlář Over a year ago

can you add screenshot of how did you used it?

David Sedlář Over a year ago

You should use it like that only in case if you instantiate patients into theirs instances before. So in your case my usage will be after your code when patiens are instantiated

David Sedlář Over a year ago

Ok, @sushreesomamohanty after your screenshot, you should use my second approach, bcs you cant invoke addAll method in context of class, you could use that only in constructor or method for example. Use second approach and you should be just fine

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