Web3j work only on Android 9 and above

[FaridBeiranvand]

I try to use your library on Android starting minimum api level 19.

java.lang.NoSuchMethodError: No interface method getTypeName()Ljava/lang/String; in class Ljava/lang/reflect/Type; or its super classes (declaration of 'java.lang.reflect.Type' appears in /system/framework/core-oj.jar)

There are lots of methods like " getTypeName, parameters" which is available in API level 28 only.

For example, in TypeReference.java, in: getClassType method you used getTypeName() which is available in API level 28 only. please fix.thanks

[MosayebG]

It's very important, I have this problem, too.

[maxxx]

confirm

[tuannm2]

Has this issue been resolved yet?. I still get the issue on android 7 with the newest version(4.8.7)

[ashu0000008]

I update to org.web3j:core:4.8.8-android，same problem too.

[Mike-bel]

me too.

[toidv]

Any workaround when waiting the official release

[mohamedelshami]

There are some limitations here with Android support, are there any plans for you upgrade to more recent Android versions?