In addition, the number of times these happen is tracked via metrics as a proxy for Studio quality. Error logs grab user's attention since they flash a red icon in the status bar.
Use the ERROR log level only in the case of genuinely unexpected errors. Scanning attached log files for errors and warnings is the first step in triaging a bug, so try not to spam these levels. The idea.log file is often the only piece of information we get from users and it makes life a lot easier if it can be used to fix a problem that cannot be reproduced locally. Make sure to provide enough information and a Throwable instance when available. If you log during normal IDE operation (on INFO or DEBUG level), store the logger in a static final field, so it‘s not recreated every time it’s used.
The logging infrastructure has a cost, so this way you don‘t pay for what you don’t need. If you are only logging in exceptional situations, consider constructing the Logger instance only once you need it, e.g.
#ANDROID STUDIO IDE LOG CODE#
Using loggersīecause loggers can be turned on and off in various ways, it‘s important to use a logger with a name that’s related to the code that's using it (logger names typically come from class and package names).
#ANDROID STUDIO IDE LOG FULL#
The former displays standard output (and thus all warnings), the latter the full log (note that there's UI there to filter displayed log entries). When you start Studio from IntelliJ, the run configuration will open two tabs in the Run/Debug tool window: “Console” and “idea.log”.
#ANDROID STUDIO IDE LOG HOW TO#
See the section below for details on how to use the DEBUG level. Warnings are additionally written to standard output and errors are made visible to the user by flashing a red icon in the status bar. When running Studio locally, you can find it under tools/idea/system/log. By default all messages with level INFO and above are written to the log file, idea.log. Reading logsĬonfiguration for the logging system can be found in log.xml. Logging is configured slightly differently during testing, where additional output is produced at the end of the test run and separate files are used. For details, see IdeaLogger, LoggerFactory and StartupUtil.prepareAndStart. In the current setup, Log4J is used by the IDE at runtime. This is an abstraction layer that allows different logging libraries (or their configurations) to be chosen by the IDE, without affecting most of the code. Logging in the IDE is based on the .Logger class.
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