How to redirect my log output from logcat to the SD-Card on an android device?

Question

I'm trying to redirect the log of my app to the sdcard file. But i failed to do so. I'm trying something like this.

String cmd= "logcat -v time   ActivityManager:W  myapp:D  *:* >\""+file.getAbsolutePath()+"\"";
Runtime.getRuntime().exec(cmd);

I tried the -f option also but it is not working either.

Answer 1

use logcat -f <filename> in order to dump it to a file in the filesystem.
Make sure the filename you're using is in the sdcard, i.e. starts with /sdcard/....

Also, in order to pass arguments to the logcat program, you should pass the exec method an array of strings (and not one string):

String[] cmd = new String[] { "logcat", "-v" "time", "ActivityManager:W", "myapp:D" };

Finally, if all else fails, use the full path for logcat: /system/bin/logcat instead of just logcat.

Answer 2

Hi adamk

Could you please write the complete command. As it is confusing to me... Thanks in advance.

Answer 3

Hi Again,

I got it. Please use space after every element in the String. Otherwise it will consider as a single line command without spaces and do nothing.