Log4j2 on Android

Question

I\'m trying to use log4j2 on Android Project (I\'m working on Android Studio).

In order to simplify this question, I will explaine what I\'ve done in a simple dummy

Answer 1

Based on your own answer but with simplified code (using Configurator.initialize() instead of XmlConfigurationFactory etc.):

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.ConfigurationSource;
import org.apache.logging.log4j.core.config.Configurator;

// Content of log4j2.xml
String log4j2xmlFileContent = getLog4j2xmlContent(); 

// convert String into InputStream
InputStream is = new ByteArrayInputStream(log4j2xmlFileContent.getBytes());

try {
    ConfigurationSource source = new ConfigurationSource(is);
    return Configurator.initialize(null, source);
} catch (IOException e) {
    e.printStackTrace();
}
return null;

Note that:

• this code must run before the first call of e.g. LogManager.getLogger()
• the member function Configurator.initialize() is not part of the log4j2 public API (see here)

See also LOG4J2-952 and Log4jConfigure.java