android - Cannot invoke method hasAnnotation() on null object -
i'm trying upgrade realm database 0.86 2.1 version.
but facing error along android studio
error:execution failed task ':app:transformclasseswithrealmtransformerfordebug'. > cannot invoke method hasannotation() on null object update (3)
clean assemble --stacktrace --info starting build creating configuration compile creating configuration apk creating configuration provided creating configuration wearapp creating configuration annotationprocessor creating configuration androidtestcompile creating configuration androidtestapk creating configuration androidtestprovided creating configuration androidtestwearapp creating configuration androidtestannotationprocessor creating configuration testcompile creating configuration testapk creating configuration testprovided creating configuration testwearapp creating configuration testannotationprocessor creating configuration debugcompile creating configuration debugapk creating configuration debugprovided creating configuration debugwearapp creating configuration debugannotationprocessor creating configuration testdebugcompile creating configuration testdebugapk creating configuration testdebugprovided creating configuration testdebugwearapp creating configuration testdebugannotationprocessor creating configuration releasecompile creating configuration releaseapk creating configuration releaseprovided creating configuration releasewearapp creating configuration releaseannotationprocessor creating configuration testreleasecompile creating configuration testreleaseapk creating configuration testreleaseprovided creating configuration testreleasewearapp creating configuration testreleaseannotationprocessor parsing sdk, no caching allowed parsing d:\android\sdk\add-ons\addon-google_apis-google-23\package.xml parsing d:\android\sdk\build-tools\23.0.2\package.xml parsing d:\android\sdk\build-tools\23.0.3\package.xml parsing d:\android\sdk\build-tools\24.0.0-preview\package.xml parsing d:\android\sdk\build-tools\24.0.1\package.xml parsing d:\android\sdk\build-tools\24.0.3\package.xml parsing d:\android\sdk\build-tools\25.0.0\package.xml parsing d:\android\sdk\extras\android\m2repository\package.xml parsing d:\android\sdk\extras\android\support\package.xml parsing d:\android\sdk\extras\google\google_play_services\package.xml parsing d:\android\sdk\extras\google\m2repository\package.xml parsing d:\android\sdk\extras\google\usb_driver\package.xml * exception is: org.gradle.api.tasks.taskexecutionexception: execution failed task ':app:transformclasseswithrealmtransformerfordebug'. @ org.gradle.api.internal.tasks.execution.executeactionstaskexecuter.executeactions(executeactionstaskexecuter.java:69) @ org.gradle.api.internal.tasks.execution.executeactionstaskexecuter.execute(executeactionstaskexecuter.java:46) @ org.gradle.api.internal.tasks.execution.postexecutionanalysistaskexecuter.execute(postexecutionanalysistaskexecuter.java:35) @ org.gradle.api.internal.tasks.execution.skipuptodatetaskexecuter.execute(skipuptodatetaskexecuter.java:66) @ org.gradle.api.internal.tasks.execution.validatingtaskexecuter.execute(validatingtaskexecuter.java:58) @ org.gradle.api.internal.tasks.execution.skipemptysourcefilestaskexecuter.execute(skipemptysourcefilestaskexecuter.java:52) @ org.gradle.api.internal.tasks.execution.skiptaskwithnoactionsexecuter.execute(skiptaskwithnoactionsexecuter.java:52) @ org.gradle.api.internal.tasks.execution.skiponlyiftaskexecuter.execute(skiponlyiftaskexecuter.java:53) @ org.gradle.api.internal.tasks.execution.executeatmostoncetaskexecuter.execute(executeatmostoncetaskexecuter.java:43) @ org.gradle.execution.taskgraph.defaulttaskgraphexecuter$eventfiringtaskworker.execute(defaulttaskgraphexecuter.java:203) @ org.gradle.execution.taskgraph.defaulttaskgraphexecuter$eventfiringtaskworker.execute(defaulttaskgraphexecuter.java:185) @ org.gradle.execution.taskgraph.abstracttaskplanexecutor$taskexecutorworker.processtask(abstracttaskplanexecutor.java:66) @ org.gradle.execution.taskgraph.abstracttaskplanexecutor$taskexecutorworker.run(abstracttaskplanexecutor.java:50) @ org.gradle.execution.taskgraph.defaulttaskplanexecutor.process(defaulttaskplanexecutor.java:25) @ org.gradle.execution.taskgraph.defaulttaskgraphexecuter.execute(defaulttaskgraphexecuter.java:110) @ org.gradle.execution.selectedtaskexecutionaction.execute(selectedtaskexecutionaction.java:37) @ org.gradle.execution.defaultbuildexecuter.execute(defaultbuildexecuter.java:37) @ org.gradle.execution.defaultbuildexecuter.access$000(defaultbuildexecuter.java:23) @ org.gradle.execution.defaultbuildexecuter$1.proceed(defaultbuildexecuter.java:43) @ org.gradle.execution.dryrunbuildexecutionaction.execute(dryrunbuildexecutionaction.java:32) @ org.gradle.execution.defaultbuildexecuter.execute(defaultbuildexecuter.java:37) @ org.gradle.execution.defaultbuildexecuter.execute(defaultbuildexecuter.java:30) @ org.gradle.initialization.defaultgradlelauncher$4.run(defaultgradlelauncher.java:153) @ org.gradle.internal.factories$1.create(factories.java:22) @ org.gradle.internal.progress.defaultbuildoperationexecutor.run(defaultbuildoperationexecutor.java:91) @ org.gradle.internal.progress.defaultbuildoperationexecutor.run(defaultbuildoperationexecutor.java:53) @ org.gradle.initialization.defaultgradlelauncher.dobuildstages(defaultgradlelauncher.java:150) @ org.gradle.initialization.defaultgradlelauncher.access$200(defaultgradlelauncher.java:32) @ org.gradle.initialization.defaultgradlelauncher$1.create(defaultgradlelauncher.java:98) @ org.gradle.initialization.defaultgradlelauncher$1.create(defaultgradlelauncher.java:92) @ org.gradle.internal.progress.defaultbuildoperationexecutor.run(defaultbuildoperationexecutor.java:91) @ org.gradle.internal.progress.defaultbuildoperationexecutor.run(defaultbuildoperationexecutor.java:63) @ org.gradle.initialization.defaultgradlelauncher.dobuild(defaultgradlelauncher.java:92) @ org.gradle.initialization.defaultgradlelauncher.run(defaultgradlelauncher.java:83) @ org.gradle.launcher.exec.inprocessbuildactionexecuter$defaultbuildcontroller.run(inprocessbuildactionexecuter.java:99) @ org.gradle.tooling.internal.provider.executebuildactionrunner.run(executebuildactionrunner.java:28) @ org.gradle.launcher.exec.chainingbuildactionrunner.run(chainingbuildactionrunner.java:35) @ org.gradle.launcher.exec.inprocessbuildactionexecuter.execute(inprocessbuildactionexecuter.java:48) @ org.gradle.launcher.exec.inprocessbuildactionexecuter.execute(inprocessbuildactionexecuter.java:30) @ org.gradle.launcher.exec.continuousbuildactionexecuter.execute(continuousbuildactionexecuter.java:81) @ org.gradle.launcher.exec.continuousbuildactionexecuter.execute(continuousbuildactionexecuter.java:46) @ org.gradle.launcher.exec.daemonusagesuggestingbuildactionexecuter.execute(daemonusagesuggestingbuildactionexecuter.java:51) @ org.gradle.launcher.exec.daemonusagesuggestingbuildactionexecuter.execute(daemonusagesuggestingbuildactionexecuter.java:28) @ org.gradle.launcher.cli.runbuildaction.run(runbuildaction.java:43) @ org.gradle.internal.actions$runnableactionadapter.execute(actions.java:173) @ org.gradle.launcher.cli.commandlineactionfactory$parseandbuildaction.execute(commandlineactionfactory.java:239) @ org.gradle.launcher.cli.commandlineactionfactory$parseandbuildaction.execute(commandlineactionfactory.java:212) @ org.gradle.launcher.cli.javaruntimevalidationaction.execute(javaruntimevalidationaction.java:35) @ org.gradle.launcher.cli.javaruntimevalidationaction.execute(javaruntimevalidationaction.java:24) @ org.gradle.launcher.cli.exceptionreportingaction.execute(exceptionreportingaction.java:33) @ org.gradle.launcher.cli.exceptionreportingaction.execute(exceptionreportingaction.java:22) @ org.gradle.launcher.cli.commandlineactionfactory$withlogging.execute(commandlineactionfactory.java:205) @ org.gradle.launcher.cli.commandlineactionfactory$withlogging.execute(commandlineactionfactory.java:169) @ org.gradle.launcher.main.doaction(main.java:33) @ org.gradle.launcher.bootstrap.entrypoint.run(entrypoint.java:45) @ org.gradle.launcher.bootstrap.processbootstrap.runnoexit(processbootstrap.java:55) @ org.gradle.launcher.bootstrap.processbootstrap.run(processbootstrap.java:36) @ org.gradle.launcher.gradlemain.main(gradlemain.java:23) @ org.gradle.wrapper.bootstrapmainstarter.start(bootstrapmainstarter.java:33) @ org.gradle.wrapper.wrapperexecutor.execute(wrapperexecutor.java:130) @ org.gradle.wrapper.gradlewrappermain.main(gradlewrappermain.java:48) caused by: java.lang.nullpointerexception: cannot invoke method hasannotation() on null object @ io.realm.transformer.realmtransformer$_transform_closure7.docall(realmtransformer.groovy:115) @ io.realm.transformer.realmtransformer.transform(realmtransformer.groovy:112) @ com.android.build.api.transform.transform.transform(transform.java:290) @ com.android.build.gradle.internal.pipeline.transformtask$2.call(transformtask.java:178) @ com.android.build.gradle.internal.pipeline.transformtask$2.call(transformtask.java:174) @ com.android.builder.profile.threadrecorder.record(threadrecorder.java:156) @ com.android.build.gradle.internal.pipeline.transformtask.transform(transformtask.java:173) @ org.gradle.internal.reflect.javamethod.invoke(javamethod.java:75) @ org.gradle.api.internal.project.taskfactory.annotationprocessingtaskfactory$incrementaltaskaction.doexecute(annotationprocessingtaskfactory.java:245) @ org.gradle.api.internal.project.taskfactory.annotationprocessingtaskfactory$standardtaskaction.execute(annotationprocessingtaskfactory.java:221) @ org.gradle.api.internal.project.taskfactory.annotationprocessingtaskfactory$incrementaltaskaction.execute(annotationprocessingtaskfactory.java:232) @ org.gradle.api.internal.project.taskfactory.annotationprocessingtaskfactory$standardtaskaction.execute(annotationprocessingtaskfactory.java:210) @ org.gradle.api.internal.tasks.execution.executeactionstaskexecuter.executeaction(executeactionstaskexecuter.java:80) @ org.gradle.api.internal.tasks.execution.executeactionstaskexecuter.executeactions(executeactionstaskexecuter.java:61) ... 60 more build failed total time: 20.365 secs stopped 0 compiler daemon(s). without reason stopped app running.
any solution ?
so according stack trace, this line fails in realm-transformer:
def allmodelclasses = allclassnames
.findall { it.endswith('realmproxy') }
.collect { classpool.getctclass(it).superclass }
.findall { it.hasannotation(realmclass.class) || it.superclass.hasannotation(realmclass.class) }
so says "if have class ends realmproxy" do per question literally have class named realmproxy, tries superclass (which ought realmobject or realmmodel) doesn't have because it's not part of realm schema, returns null , transformer crashes.
solution 1: rename realmproxy class like, realmfacade or something
or
solution 2: extend random class realmproxy doesn't have @realmclass annotation.
public abstract class realmproxybase { } public class realmproxy extends realmproxybase implements closeable { // ... (in meantime, filed issue here)
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