The Flutter error message states that a 'String' type is incompatible with an 'int' type when trying to access an 'index'

Seeking assistance for an app I am developing to fetch data from a URL post in JSON format. The data includes information about a person, such as their client details and address. However, when attempting to use this address information to send it to another URL, I encounter an error.

error_message

I have attempted various methods to extract and manipulate the address details but have not been successful. Here is one approach I tried:

{
          "id": dataClient['direction']['id'],
          "street": "${dataClient['direction']['street']}",
          "colony": "${dataClient['direction']['colony']}",
          "state": "${estadoCliente}",
          "stateCode": "${dataClient['direction']['stateCode']}",
          ...
        },
        {
          "id": dataClient['shippingAddressList'][0]['id'],
          "street": "${dataClient['shippingAddressList'][0]['street']}",
          "colony": "${dataClient['shippingAddressList'][0]['colony']}",
          "state": "${estadoClienteSend}",
          ...
        }

Additionally, I attempted storing the address information in a dynamic list but encountered the same issue:

List addresses;

addresses = jsonDecode(utf8.decode(response.bodyBytes))['data']['addresses'];

It seems that only when including static information in the data being sent out, everything works as expected. Any insights or guidance on resolving this would be greatly appreciated. Thank you!

Answer №1

When you provide a String instead of an integer in Flutter, this error will pop up. For example, if Flutter is looking for List[0] but you pass List['value'].

It's advisable to test your code with smaller datasets and fewer lines to identify the exact source of the issue.

Keep going strong!

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