CODEWITHSUNDEEP
flutter
serdar aylanc
serdar aylanc

Reputation: 1347

Flutter: JSON Parsing data is null

When I try to display the parsed JSON data in ListView, I am receiving this error:

'package:flutter/src/widgets/text.dart': Failed assertion: line 213 pos 15: 'data != null': is not true.

I checked the parsed data, and some fields are null. What is the proper way to check if the data is null and instead display string "Empty" ?

Results getShipment(int index) {
    return new Results(
      cargoTrackerCode: data[index]["cargoTrackerCode"]
     )
}

new Padding(                        
    child: new Text(widget.results.customerName,
        style: new TextStyle(
          fontSize: 18.0,
          color: Colors.white,
        )
    ),
),

Upvotes: 0

Views: 5603

Answers (1)

rmtmckenzie
rmtmckenzie

Reputation: 40423

You can use a ternary operator to do an inline if-else sort of statement.

data == null ? 'Empty' : data[index]["cargoTrackerCode"]

Upvotes: 6

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