Support for abstract interface with static methods

[vtrifonov]

Currently the android runtime does not support calls to static methods which are implemented in abstract interfaces e.g.:

package com.tns.tests;

public abstract interface AbstractInterface {

    public static int test()
    {
        return 1;
    }
}

A call like this:

var test = com.tns.tests.AbstractInterface.test();

will result in:

Error: java.lang.NoSuchMethodError: no static method "Lcom/tns/tests/AbstractInterface;.test()I"
    com.tns.Runtime.callJSMethodNative(Native Method)
    com.tns.Runtime.dispatchCallJSMethodNative(Runtime.java:1116)
    com.tns.Runtime.callJSMethodImpl(Runtime.java:996)
    com.tns.Runtime.callJSMethod(Runtime.java:983)
    com.tns.Runtime.callJSMethod(Runtime.java:967)
    com.tns.Runtime.callJSMethod(Runtime.java:959)
    com.tns.gen.android.view.View_OnClickListener.onClick(View_OnClickListener.java:16)
    android.view.View.performClick(View.java:5637)
    android.view.View$PerformClick.run(View.java:22429)
    android.os.Handler.handleCallback(Handler.java:751)
    android.os.Handler.dispatchMessage(Handler.java:95)
    android.os.Looper.loop(Looper.java:154)
    android.app.ActivityThread.main(ActivityThread.java:6119)
    java.lang.reflect.Method.invoke(Native Method)
    com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
    com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

Using Google WebRTC causes this error:

dependencies {
    implementation 'org.webrtc:google-webrtc:1.0.+'
}

[vtrifonov]

Seems like setting minSdkVersion to 24 fixes the issue:

android {
  ....
  defaultConfig {
    minSdkVersion 24
    ....
  }
}

. This is actually because the static interface method requires API level 24, although it is stated in this article that any API level is compatible when using Java 1.8, but however JNI calls to such methods are not working with API level < 24.