I got error message:
AddAddressActivity.kt: (69, 53): Type mismatch: inferred type is String? but String was expected
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7Please do not post pictures of code. Please paste edit your question and paste the actual text.Tenfour04– Tenfour042022-01-11 04:57:40 +00:00Commented Jan 11, 2022 at 4:57
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2 Answers
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()
1 Comment
Tenfour04
Or use the standard library function
.orEmpty().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
