I have used the following process to create a Java-based ANE for Android.
- Compile the java files along with their dependencies for Android platform.
- Create the .jar file with the Java SDK.
- Create the .swc file.
- Package the ANE using ADT.
When I use that ANE to package an APK, I get the following error:
dx tool failed:Compilation failed with an internal error. java.lang.IllegalArgumentException at com.android.tools.r8.org.objectweb.asm.ClassReader.<init>(ClassReader .java:160) at com.android.tools.r8.org.objectweb.asm.ClassReader.<init>(ClassReader .java:143) at com.android.tools.r8.org.objectweb.asm.ClassReader.<init>(ClassReader .java:418) at com.android.tools.r8.graph.JarClassFileReader.read(JarClassFileReader .java:91) at com.android.tools.r8.dex.ApplicationReader$ClassReader.lambda$readCla ssSources$1(ApplicationReader.java:231) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(Unknown Source ) at java.util.concurrent.ForkJoinTask.doExec(Unknown Source) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source) at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source) at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
I know I have not followed the conventional route of using the Android Studio or Eclipse, or some such IDE. I just used the command prompt to achieve building the ANE.
What am I missing here? Is there something specific that Android Studio does before it outputs a .jar file that is packaged into an ANE?
CodePudding user response：
Changed the release flag in javac to --release 8 and the APK is correctly created. Earlier, the release flag was set to 16.