Android Logging

According to the android documentation you can configure logging on a development device using System Properties. The property to set is log.tag. and it should be set to one of the following values: VERBOSE, DEBUG, INFO, WARN, ERROR, ASSERT, or SUPPRESS. More information on this is available in the documentation for the isLoggable() method.

You can set properties temporarily using the setprop command. For example:

C:\android>adb shell setprop log.tag.MyAppTag WARN
C:\android>adb shell getprop log.tag.MyAppTag WARN

Alternatively, you can specify them in the file '/data/local.prop' as follows:

log.tag.MyAppTag=WARN

This file as read at boot time so you'll need to restart after updating it.

Finally, you can set them programmatically using the System.setProperty() method.

You should use :
if (Log.isLoggable(TAG, Log.VERBOSE)) {
     Log.v(TAG, "my log message");
}