How to pass a map with unique keys and array values (objects) in dart/flutter to a widget? or how to print it?

Question

I have two questions: First of all how I can print the values of every key (example below). Second, how to pass/iterate it inside build to a custom widget?

I'm new to Dart and Flutter so any help will be appreciated.

var games = [
    {
      'sony': ['Bloodborne', 'Uncharted', 'GOW']
    },
    {
      'Nintendo': ['Mario', 'Zelda', 'Metroid']
    },
    {
      'Microsoft': ['Gears', 'Halo', 'Forza']
    }
  ];

Abhishek Ghaskata · Accepted Answer · 2020-10-04 18:01:55Z

1

you can use keys, values, or entries object to achieve your goal.

for (var key in games.keys) print(key); // prints Sony Microsoft
for (var value in games.values) print(value); // prints your values
for (var entry in games.entries) {
  print(entry.key);
  print(entry.value);
}

answered Oct 4, 2020 at 18:01

Abhishek Ghaskata

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8 Comments

Lord Ahmad Over a year ago

thanks for answering but I'm trying to use entries but it inst working Error: The getter 'entries' isn't defined for the class 'List<Map<String, List<String>>>'. same for keys and values.

Abhishek Ghaskata Over a year ago

are you facing any issue while using entries? @LordAhmad

Abhishek Ghaskata Over a year ago

just use entry.value. entry.value is the list so you can use it easily

Lord Ahmad Over a year ago

I don't understand, can you please update your answer above?

Abhishek Ghaskata Over a year ago

if entry.value is not applicable to your requirement then please provide your requirement

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