CODEWITHSUNDEEP
androidstringandroid-studiokotlincompiler-errors
ilham
ilham

Reputation: 71

Type mismatch: inferred type is String? but String was expected kotlin

I got error message:

AddAddressActivity.kt: (69, 53): Type mismatch: inferred type is String? but String was expected

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Upvotes: 2

Views: 19666

Answers (2)

Bhavin
Bhavin

Reputation: 667

This is due to your villageId can be null which you have got from getString("village_id")

for solving this you can use default value so when bundle don't contains the provided key it will eventually returns the default value.

val villageId = getString("village_id", "My Default Value")

or you can use kotlin elvis to get other value when it's null.

val villageId = getString("village_id") ?: "My Default Value"

or if you're sure that intent will always contain the village id then you can use !!(not-null assertion operator) which will convert non-null value if not null else will throw exception

val villageId: String = getString("village_id")!!

you can more read about null safety in following link Null safety | Kotlin

Upvotes: 1

Tyler V
Tyler V

Reputation: 10940

This is because the getString method returns a nullable value (String?) but you are assigning it to something that takes a non-null value (expects String). If you want to fix it you could assign it to a default string if it is null like this

val villageId = getString("village_id") ?: "default"

or to an empty string

val villageId = getString("village_id").orEmpty()

Upvotes: 6

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