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Title
# announcements
e
ericksli
09/07/2017, 7:20 AMI just found a problem in my code. When I use
Array<CreditCardType>typesList<CreditCardType>d
diesieben07
09/07/2017, 7:22 AMWhen using an array, how are you creating that array?
e
ericksli
09/07/2017, 7:23 AMprivate val types: Array<CreditCardType> = arrayOf(Visa, MasterCard, AmericanExpress, DinersClub, Discovery, Jcb, UnionPay, Maestro)
k
karelpeeters
09/07/2017, 7:29 AMCan you try to create a minimal example that demonstrates the problem?
e
ericksli
09/07/2017, 7:43 AMI tried in my android project and the first element is null
But I tried it in try.kotlinlang.org it works perfectly
I got error like this when I am in my Android Project
java.lang.NullPointerException: Attempt to invoke virtual method ‘java.lang.String CreditCardType.getName()’ on a null object reference
at CreditCardType$Companion.matchName(CreditCardTypes.kt:29)
k
karelpeeters
09/07/2017, 8:00 AMAgain, try to create a minimal example. Remove the object implementations, make the list shorter, remove irrelevant methods, ...
e
ericksli
09/07/2017, 8:27 AMI have tried in a new andriod project and it works. But it doesn’t work in my project
I found out how to trigger the null element:
When I set a var field of
CreditCardTyped
diesieben07
09/07/2017, 9:16 AMPlease can you show the code...
e
ericksli
09/07/2017, 9:29 AMThe data class:
Copy code
@PaperParcel
data class PaymentMethod(
var id: Int = -1,
// skip other fields...
var issuer: CreditCardType? = null,
var type: String = TYPE_CREDIT,
) : Parcelable {
companion object {
@JvmField
val CREATOR = PaperParcelPaymentMethod.CREATOR
const val TYPE_CREDIT = "credit"
const val TYPE_DEBIT = "debit"
}
override fun describeContents() = 0
override fun writeToParcel(dest: Parcel, flags: Int) {
PaperParcelPaymentMethod.writeToParcel(this, dest, flags)
}
}If I change issuer to:
Copy code
var issuer: CreditCardType = Visa2 Views