CODEWITHSUNDEEP
flutterapidart
Panashe
Panashe

Reputation: 139

The property can't be unconditionally accessed because the receiver can be 'null'

Hi I'm having two problems when trying to import API's into flutter, first it seems it seems it is unable to read the data from my snapshot so when I use the function if (snapshot.hasData) it keeps showing the CircularProgressIndicator.

Second problem is when I try to add a variables to allow me to add text from the API it is giving me the error 'The property can't be unconditionally accessed because the receiver can be 'null''`

@override
 Widget build(BuildContext context) {
    return Scaffold (
      appBar: AppBar(
        title: Text('News App'),
      ),
      body: Container(
        child: FutureBuilder<Welcome>(
          future: _Welcome,
          builder: (context, snapshot) {
            if (snapshot.hasData) {
              return ListView.builder(
                itemCount: 52,
                itemBuilder:(context, index) {
              var ticker = snapshot.data.ticker; //error here
              return Container(
                height: 100,
                child: Row(
                  children: [
                    Text(ticker)
                  ],
                ),
              );
            });
            } 
            else 
            return Center(child: CircularProgressIndicator());
          },
          
        ),
      )
    );
  }`

Upvotes: 0

Views: 2430

Answers (1)

Shaquiri1
Shaquiri1

Reputation: 46

For your first problem try it with

if (snapshot.connectionState == ConnectionState.done)

For your second problem try adding an exclamation mark to guarantee the value is not null

var ticker = snapshot.data!.ticker;

Upvotes: 2

Related Questions