How to save LogCat contents to file?

Question

I\'ve added debug strings (using Log.d()) and want to see them in context from the contents of logCat. The \"save\" icon for LogCat has a \"Save selected items\" hint, but t

Answer 1

In addition to answer by Dinesh Prajapati, Use

 adb -d logcat <your package name>:<log level>

where -d is for device and you may also choose -e instead for emulator log and log level is a/d/i/v/e/w etc.

Now your command goes like:

adb -d logcat com.example.example:V > logfileName_WithPath.txt

Answer 2

Use logcat tool with -d or -f switch and exec() method.

Saving to a file on the host computer:

exec( "adb logcat -d > logcat.log" ) // logcat is written to logcat.log file on the host.

If you are just saving to a file on the device itself, you can use:

exec( "adb logcat -f logcat.log" ) // logcat is written to logcat.log file on the device.

Answer 3

Additional tip for the programmatic approach:

String filePath = Environment.getExternalStorageDirectory() + "/logcat.txt";
Runtime.getRuntime().exec(new String[]{"logcat", "-f", filepath, "MyAppTAG:V", "*:S"});

This opens a continuous output stream between logcat and the file provided. This can result in a deadlock if you then waitFor the Process returned by exec, or an exception if the provided file is prematurely disposed.

I found that including the "-d" flag simply dumps logcat and closes the connection, which prevents the above behavior.

Answer 4

If you are in the console window for the device and if you use Teraterm, then from the Menu do a File | Log and it will automatically save to file.