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https://issues.apache.org/jira/browse/LOG4J2-1921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076259#comment-16076259
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Ajitha edited comment on LOG4J2-1921 at 7/6/17 9:45 AM:
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Android does not support Java 9 classes. It throws error in StackLocator.class:
{code:java}
AGPBI: {"kind":"error","text":"Error converting bytecode to dex:\nCause: Dex
cannot parse version 53 byte code.\nThis is caused by library dependencies that
have been compiled using Java 8 or above.\nIf you are using the
\u0027java\u0027 gradle plugin in a library submodule add \ntargetCompatibility
\u003d \u00271.7\u0027\nsourceCompatibility \u003d \u00271.7\u0027\nto that
submodule\u0027s build.gradle file.\n...while parsing
META-INF/versions/9/org/apache/logging/log4j/util/StackLocator.class","sources":[{}],"original":"PARSE
ERROR:\nunsupported class file version 53.0\n...while parsing
META-INF/versions/9/org/apache/logging/log4j/util/StackLocator.class\n","tool":"Dex"}
AGPBI: {"kind":"error","text":"1 error; aborting","sources":[{}]}
{code}
was (Author: ajitha):
Android does not support Java 9 classes. It says:
{code:java}
AGPBI: {"kind":"error","text":"Error converting bytecode to dex:\nCause: Dex
cannot parse version 53 byte code.\nThis is caused by library dependencies that
have been compiled using Java 8 or above.\nIf you are using the
\u0027java\u0027 gradle plugin in a library submodule add \ntargetCompatibility
\u003d \u00271.7\u0027\nsourceCompatibility \u003d \u00271.7\u0027\nto that
submodule\u0027s build.gradle file.\n...while parsing
META-INF/versions/9/org/apache/logging/log4j/util/StackLocator.class","sources":[{}],"original":"PARSE
ERROR:\nunsupported class file version 53.0\n...while parsing
META-INF/versions/9/org/apache/logging/log4j/util/StackLocator.class\n","tool":"Dex"}
AGPBI: {"kind":"error","text":"1 error; aborting","sources":[{}]}
{code}
> Getting ClassCastException while getting LoggerContext
> ------------------------------------------------------
>
> Key: LOG4J2-1921
> URL: https://issues.apache.org/jira/browse/LOG4J2-1921
> Project: Log4j 2
> Issue Type: Bug
> Components: Configurators
> Affects Versions: 2.8.2
> Environment: Android
> Reporter: Ajitha
> Priority: Blocker
> Labels: Android
>
> Hi,
> I integrated the log4j with my Android application and did the initial
> config. It works fine. I have a menu item in "Settings" screen where I can
> change the log levels in my application. So, After I change the
> configuration, I need to update the loggers. So I am using following logic.
> {code:java}
> LoggerContext ctx = LoggerContext.getContext()
> Configuration config = ctx.getConfiguration();
> LoggerConfig loggerConfig =
> config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
> loggerConfig.setLevel(myLogLevel);
> ctx.updateLoggers();
> {code}
> While getting the logger context, I am getting a ClassCastException.
> 05-26 22:33:21.011 E/AndroidRuntime( 9642): Caused by:
> java.lang.ClassCastException:
> org.apache.logging.log4j.simple.SimpleLoggerContext cannot be cast to
> org.apache.logging.log4j.core.LoggerContext
> 05-26 22:33:21.011 E/AndroidRuntime( 9642): at
> org.apache.logging.log4j.core.LoggerContext.getContext(LoggerContext.java:190)
> 05-26 22:33:21.011 E/AndroidRuntime( 9642): at
> org.apache.logging.log4j.core.config.Configurator.setRootLevel(Configurator.java:323)
> Please help here.
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