I try this and find it works. Just use the setprop
log.tag.<YOUR_LOG_TAG> <LEVEL>.
Be care that the log.tag is necessary

On Oct 13, 7:14 am, jotobjects <jotobje...@gmail.com> wrote:
> Just playing around with Log.isLoggable(tag, level) method.
>
>             Log.d(LOGTAG, "--- debug log");
>             Log.i(LOGTAG, "--- info log");
>             if (Log.isLoggable(LOGTAG, Log.INFO)) Log.i(LOGTAG, "---
> isLoggable info log");
>             if (Log.isLoggable(LOGTAG, Log.DEBUG)) Log.d(LOGTAG, "---
> isLoggable debug log");
>
> These all send output to the log except the last.
>
> Following the instructions in the API for Log.isLoggable I used adb to
> set the value of LOGTAG to DEBUG as follows -
>
> # setprop com.foo.bar DEBUG
>
> where "com.foo.bar" is the value of LOGTAG. But the 4th Log still does
> not print.  I tried stopping and restarting the emulator and removing
> and reinstalling the app and setting the property before the app
> started. No luck so far.
>
> I was assuming the mechanism would allow me to turn up the logging
> verbosity on a running app, but so far I don't get isLoggable to do
> anything at all.  Any suggestions?
>
> Related questions:
> - What API call will get the values that you see with "adb shell
> getprop"?
> - isLoggable suggests creating a /data/local.prop file.  Is the idea
> to copy that file onto the device or is there another way?

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