How to use null with kotlin @Parcelize

Question

Here is very simple code:

@Parcelize
data class Inner(val a: Int): Parcelable

@Parcelize
data class Test(val a: Int, val inner: Inner?): Parcelable

@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
    @Test
    fun testParcel() {
        val test = Test(0, null)

        val parcel = Parcel.obtain()
        parcel.writeParcelable(test, test.describeContents())
    }
}

I have nullable property Test.inner. If it is not null, the code works fine but when it is null then I have the exception:

java.lang.NullPointerException: Attempt to invoke interface method 'void android.os.Parcelable.writeToParcel(android.os.Parcel, int)' on a null object reference

How to resolve this? Maybe I do something wrong.

Is these files are in test folder or androidTest folder ? – Sangeet Suresh Oct 22 '17 at 16:15 — Sangeet Suresh, Oct 22 '17 at 16:15
@SangeetSuresh It is in androidTest – vmtrue Oct 23 '17 at 00:56 — vmtrue, Oct 23 '17 at 00:56
it's a bug https://youtrack.jetbrains.com/issue/KT-20032 – Silvia H Oct 30 '17 at 14:12 — Silvia H, Oct 30 '17 at 14:12
@SilviaH You are right. Thanks. – vmtrue Oct 30 '17 at 15:45 — vmtrue, Oct 30 '17 at 15:45

score 6 · Accepted Answer · answered Dec 05 '17 at 11:58

6

The bug has been fixed in Kotlin 1.1.60.

answered Dec 05 '17 at 11:58

makovkastar

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3

It has happened to me with Kotlin 1.3.11 :/ – Mauker Jan 21 '19 at 21:21
1

And also with 1.3.21 ! – Rez Mar 04 '19 at 08:20
1

hit the bug in 1.3.50 – Kushan Nov 21 '19 at 08:48

How to use null with kotlin @Parcelize

1 Answers1