Does Log.isLoggable returns wrong values?

Question

When I was writing a log wrapper for my android application I noticed a strange behavior of androids Log.isLoggable method. Executing following code:

final S         


        

Answer 1

All log levels are written to logcat regardless of what the current log level is. The isLogabble() method can be used as an optimization for your apps to prevent sending unneeded log statements to logcat. You can also use the adb logcat command to filter a subset of the logging levels even if the logging is set to verbose (see https://developer.android.com/studio/debug/am-logcat.html).