[英]How to use null with kotlin @Parcelize
Here is very simple code: 这是非常简单的代码:
@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
. 我有可为空的属性
Test.inner
。 If it is not null, the code works fine but when it is null then I have the exception: 如果它不为null,则代码可以正常工作,但是当它为null时,我会遇到异常:
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? 如何解决呢? Maybe I do something wrong.
也许我做错了。
该错误已被固定在科特林1.1.60。
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