Solution 3: Using Fallback Operator : Here, “str” is null, and we set the fallback operator with fallback value in case of “str” is null. You need to do this before using it on the code. You can use this method to handle Null values to escape the “Null check operator used on a null value” error in Flutter or Dart.
Read moreWhat is a null check operator?
The nullish coalescing operator ( ?? ) is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined , and otherwise returns its left-hand side operand .
Read moreHow do I ignore null in check Flutter?
You can do this in two ways:
Read moreHow do you fix a null safety Flutter?
Migrating to null safety
Read moreIS null safety compulsory in Flutter?
There are many reasons to migrate Flutter apps to null safety, like those mentioned above, and it’s a must-do . This feature is a breaking change and previously written apps will not compile with the null checker on which might tempt some lazy developers to not activate it.23 Mar 2021
Read moreWhat does null safety mean?
For us, in the context of null safety, that means that if an expression has a static type that does not permit null , then no possible execution of that expression can ever evaluate to null . The language provides this guarantee mostly through static checks, but there can be some runtime checks involved too.
Read moreWHAT IS NULL check operator in flutter?
Null-aware operators in dart allow you to make computations based on whether or not a value is null . It’s shorthand for longer expressions. A null-aware operator is a nice tool for making nullable types usable in Dart instead of throwing an error.
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