Null check operator used on a null value dart/flutter

Question

I am struggling to figure out an issue with a null check operator. For one, my code is the exact same in another area of my program and I am getting data just fine from it. I have gone over it and over it for the last two weeks and have found nothing that helps. As shown in my screen shots, I am actually seeing the data come in from my API call and the field that it is calling null, is not actually null. Please help as this is extremely frustrating.

Perhaps we can jump in a chat session and I can share more of my code specifics based on questions one would have in helping me resolve this issue.

Thanks!

Md. Yeasin Sheikh · Accepted Answer · 2022-07-20 15:46:17Z

1

You are getting null value on controller.port, better check null and then render the image like

if(controller.port?.imageUrl!=null)  
    Image.network(controller.port!.imageUrl)

More about understanding-null-safety

answered Jul 20, 2022 at 15:46

Md. Yeasin Sheikh

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2 Comments

Mackina Over a year ago

I don't understand why I am getting a null value though. In my response from the API, the image_url: does have a value. Regardless, having a check would be wise because in the event a new port is created, it wont have a value until the customer assigns one. Even still will this check pass since the API is delivering a value in the key:value pair?

Md. Yeasin Sheikh Over a year ago

You can check few cases like, making sure it is getting data using async method then setState. Others things can happen, try break point on this controller on debug mode

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