无法为Flutter应用生成已签名的APK

Question

I tried generating signed apk for my Flutter application using Android Studio in Windows and got the error:

Error:Internal error: (java.lang.ClassNotFoundException) com.google.wireless.android.sdk.stats.IntellijIndexingStats$Index
java.lang.ClassNotFoundException: com.google.wireless.android.sdk.stats.IntellijIndexingStats$Index
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at com.intellij.util.indexing.counters.IndexCounters.<clinit>(IndexCounters.java:34)
    at com.intellij.util.indexing.impl.MapReduceIndex.<init>(MapReduceIndex.java:86)
    at org.jetbrains.jps.backwardRefs.index.CompilerReferenceIndex$CompilerMapReduceIndex.<init>(CompilerReferenceIndex.java:214)
    at org.jetbrains.jps.backwardRefs.index.CompilerReferenceIndex.<init>(CompilerReferenceIndex.java:73)
    at org.jetbrains.jps.backwardRefs.JavaCompilerBackwardReferenceIndex.<init>(JavaCompilerBackwardReferenceIndex.java:12)
    at org.jetbrains.jps.backwardRefs.JavaBackwardReferenceIndexWriter.initialize(JavaBackwardReferenceIndexWriter.java:74)
    at org.jetbrains.jps.backwardRefs.JavaBackwardReferenceIndexBuilder.buildStarted(JavaBackwardReferenceIndexBuilder.java:40)
    at org.jetbrains.jps.incremental.IncProjectBuilder.runBuild(IncProjectBuilder.java:358)
    at org.jetbrains.jps.incremental.IncProjectBuilder.build(IncProjectBuilder.java:178)
    at org.jetbrains.jps.cmdline.BuildRunner.runBuild(BuildRunner.java:138)
    at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:302)
    at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:135)
    at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler.lambda$channelRead0$0(BuildMain.java:229)
    at org.jetbrains.jps.service.impl.SharedThreadPoolImpl.lambda$executeOnPooledThread$0(SharedThreadPoolImpl.java:42)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

But I can create signed apk for my native(Java) android app without any errors. I then tried generating the apk using linux and it worked perfectly. What is causing this error?

Answer 1

It got the same issue, I tried to use firebase_messaging but after that I decided to not use firebase_messaging so I removed the plugins and all but I forgot to remove it from gradle file at that time I got the same issue .. which I fixed like this...

Cross check all the services your are using with the one added in gradle... And remove the unused lines or dependencies .... This might solve the issue.

Answer 2

android studio is a total DIASTER since it moved to IntelliJ... this tools is totally untested junk

Error:Internal error: (java.lang.ClassNotFoundException) com.google.wireless.android.sdk.stats.IntellijIndexingStats$Index

all the time

Answer 3

Try to check your key.properties file if it has correct key credentials and path

For Example

storePassword=pass
keyPassword=pass
keyAlias=key0
storeFile=A:\\{Your Path}\\BongoFlix\\key.jks

and then from Build>Flutter>Build APK it will generate a signed APK

Read more here about release versions https://flutter.dev/docs/deployment/android to setup your gradle correctly