API for sending log output.
Generally, you should use the Log.v(), Log.d(),Log.i(), Log.w(), and Log.e() methods to write logs. You can then view the logs in logcat.
The order in terms of verbosity, from least to most is ERROR, WARN, INFO, DEBUG, VERBOSE. Verbose should never be compiled into an application except during development. Debug logs are compiled in but stripped at runtime. Error, warning and info logs are always kept.
Смотреть это можно через monitor.bat идет в составе sdk, ну или abd logcat. В лог выод идет только для debug сборок, в release не выводится