Android Loggable can still be observerd on Logcat after setprop

Question

Before I did any changes, I printed Log.isLoggable(MYAPP_TAG) for all levels.

I/System.out﹕ MYAPP Loggable Level: [V:false][D:false][I:true][W:true][E:true]

And then I did adb shell setprop log.tag.MYAPP_TAG WARN.

The Log.isLoggable(MYAPP_TAG) message now became

I/System.out﹕ MYAPP Loggable Level: [V:false][D:false][I:false][W:true][E:true]

However, all log messages (Log.v, Log.d, etc) can still be observed in Logcat.

02-03 13:18:28.050    3284-3284/com.XX V/MYAPP_TAG﹕ onServiceConnected
02-03 13:18:28.050    3284-3284/com.XX D/MYAPP_TAG﹕ onServiceConnected

Why is that?

Are you trying to hide debug during runtime of a deployed app or are you trying to just suppress it while debugging? — odexcide, Feb 03 '15 at 18:24
If it is just for you, you can use [filters on logcat](http://developer.android.com/tools/debugging/debugging-log.html#filteringOutput). If you are trying to permanently remove log entries from other people viewing them, you should check out [this comment](http://stackoverflow.com/questions/2018263/android-logging#comment5791618_2019563). — odexcide, Feb 03 '15 at 18:41
This is a good answer if you are trying to hide logs in production (release): http://stackoverflow.com/a/2019597/1895218 — odexcide, Feb 03 '15 at 18:43

Nickolaus · Accepted Answer · 2015-02-03T18:32:20.190

2

I think you need to wrap your logs:

if (Log.isLoggable("MY_TAG", Log.VERBOSE)) {
        Log.v("MY_TAG", "Here's a log message");
}

otherwise android seems to ignore your settings; it seems like the Log.v, Log.d, etc. are not checking against the LogLevel.

edited Feb 03 '15 at 18:32

answered Feb 03 '15 at 18:21

Nickolaus

It returns "usage: setprop " – Pierrew Feb 03 '15 at 18:23
This solution would be pretty verbose with a lot of log messages and add more overhead. Check out this solution http://stackoverflow.com/questions/2018263/android-logging/2019597#2019597 – odexcide Feb 03 '15 at 19:03

1 Answers1