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Android Debugging Tidbits: #2: Redirect stdout, stderr

31 Jan

Viewing stdout and stderr

By default, the Android system sends stdout and stderr (System.out and System.err) output to /dev/null. In processes that run the Dalvik VM, you can have the system write a copy of the output to the log file. In this case, the system writes the messages to the log using the log tags stdout and stderr, both with priority I.

To route the output in this way, you stop a running emulator/device instance and then use the shell command setprop to enable the redirection of output. Here’s how you do it:

$ adb shell stop
$ adb shell setprop log.redirect-stdio true
$ adb shell start

The system retains this setting until you terminate the emulator/device instance. To use the setting as a default on the emulator/device instance, you can add an entry to /data/local.prop on the device.

Original Source: Android Developer page

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1 Comment

Posted by on January 31, 2011 in Android, Technical

 

Tags: , , ,

One response to “Android Debugging Tidbits: #2: Redirect stdout, stderr

  1. Jeev Trika

    May 20, 2011 at 12:18 pm

    Thank you for such wonderful and relevant article. Thanks. Jeev Trika

     

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