string passing error using json.decode in flutter

Question

I'm saving a string of this format "[{text: drding4disruption.com, quantity:10.0}, {text: google.com, quantity:6.0}]"

so reading some tutorials I got to know that we can use json.convert method to parse a string but here i'm getting

I did try to use json.decode(the_string); but It shows this error

FormatException: Unexpected character (at character 3)
E/flutter (14216): [{text: 4 medium size potatoes (boiled, peeled), quantity: 4.0, measure: <u...
E/flutter (14216):   ^
E/flutter (14216):

how do I parse it so that I can access the map as well

Bach · Accepted Answer · 2021-02-01 07:03:34Z

1

Save the string in this format by adding double quote to fields and string values :

[
   {
      "text":"drding4disruption.com",
      "quantity":10
   },
   {
      "text":"google.com",
      "quantity":6
   }
]

Finally decode it: json.decode(the_string);

To consume it as YAML syntax take a look to this yaml package

edited Feb 1, 2021 at 7:03

Bach

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answered Jan 17, 2021 at 18:04

Jhakiz

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3 Comments

vIvId_gOat Over a year ago

thanks for answering but I can't do this because I'm the string from a api request or is there a way can I do it?

vIvId_gOat Over a year ago

thats a third part API also I'm able to parse the data that API returns which also dosen't contains any double quotes for the keys and the child

Jhakiz Over a year ago

In order to be able to parse data returned by your API request as JSON, the string must be in the above format!!

dm_tr · Accepted Answer · 2021-01-17 18:04:59Z

0

Use the import 'dart:convert' library and do it as following:
From JSON list to String

final String listAsString = jsonEncode(list);

From String to JSON list, simply reverse

final List list = jsonDecode(listAsString);

Make sure your JSON map keys and values are quoted like this

var list = [{"text": "drding4disruption.com", "quantity":10.0}, {"text": "google.com", "quantity":6.0}];

answered Jan 17, 2021 at 18:04

dm_tr

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1 Comment

vIvId_gOat Over a year ago

thanks for your answer, lemme save the string by encoding, maybe it can decode in that format as it was encoded

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