NoSuchMethodError for java.lang.Constructor#getParameterCount

[damianw]

This method was not added until Java 8, and thus is not available on Android API levels lower than 26:

Fatal Exception: java.lang.NoSuchMethodError: No virtual method getParameterCount()I in class Ljava/lang/reflect/Constructor; or its super classes (declaration of 'java.lang.reflect.Constructor' appears in /system/framework/core-oj.jar)
       at com.squareup.wire.KotlinConstructorBuilder.build(KotlinConstructorBuilder.kt:91)
       at com.squareup.wire.MessageJsonAdapter.fromJson(MessageJsonAdapter.kt:85)
       at com.squareup.wire.MessageJsonAdapter.fromJson(MessageJsonAdapter.kt:24)
       at com.squareup.moshi.internal.NullSafeJsonAdapter.fromJson(NullSafeJsonAdapter.java:41)
       ...        

I'm happy to put up a PR with a fix, but am curious to know what an appropriate test would look like given that there aren't currently any JDK-specific or Android-specific tests already in the codebase.

[oldergod]

Thanks! Do you think you could make a new Android sample with API levels to 25 or less?

[damianw]

Can do, but can you clarify what you're asking for? Do you mean something in the samples directory?

[oldergod]

Yes. For instance, make a new module copying android-app-kotlin-sample and add some code serializing/deserializing json to call the code you mentioned above

[damianw]

I put up a PR #2881 - let me know if that's what you're looking for