I'm trying to grab some filtered output from logcat through command line, but would prefer to not have a logcat stream opened up for automation purposes.
Here's my use case: I want to clear logcat, perform some instrumentation tests with AccessibilityChecks enabled, then check logcat for Accessibility errors that the class has found in my UI.
Currently, here's what I can do via command line:
//clear logcat history:
adb logcat -c
// Run instrumentation tests at this time.
// Run following command when tests done:
adb logcat AccessibilityValidator:E *:S
// ctrl-c to close stream
This does what it is supposed to. I will see just the Accessibility errors printed out. The problem is that I do not want to open up a logcat stream. I'd like to get the results as is, right at the point that my instrumentation tests have completed. Opening up a stream is not very ideal as I would then need to pipe in a ctrl-C to my pipeline to close the stream. I would really like to get a snapshot of the output in plain text. Is such a thing possible?
Thank you!
Edit: I was able to find what I believe is a working solution - I just needed to add the -d flag. This will not open a stream and will print the contents of the logcat file. Combine with my filtering, I am able to get exactly what I was looking for.
I was able to find what I believe is a working solution - I just needed to add the -d flag. -d will dump the logs and exit. This will not open a stream and will print the contents of the logcat file to stdout. Combine with my filtering, I am able to get exactly what I was looking for.
The command I needed is:
adb logcat -d AccessibilityValidator:E *:S