Debug School

rakesh kumar
rakesh kumar

Posted on

Flutter Errors:type 'Null' is not a subtype of type 'String' in type cast

Reason 1
Debug
when i debug i got print nothing

print("payDate: $payDate");
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payDate:
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Existing code

var payDate = json['pay_date'];
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Solution
i change small p to capital P as data base field name is Pay_date

var payDate = json['Pay_date'];
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Reason 2

print("influencerAdminId: $influencerAdminId");
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influencerAdminId:[]
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my existing code is

final String influencerAdminId;
============or===========
final List<String> influencerAdminId;
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solution

 final List<int> influencerAdminId;
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Reason 3
print("statusDate: $statusDate");
in response if it is null

statusdate: {291: null},
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Solution

 var statusDate = json['statusdate'] != null
        ? (json['statusdate'] as Map).map((key, value) => MapEntry(key.toString(), safeString(value)))
        : null;
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