Android logging (adb logcat) cheat sheet

#!/usr/bin/env bash

PACKAGE_NAME=com.my.package

# Block until the PACKAGE_NAME starts and print its PID
adb_wait_pid() { adb shell "until pidof $PACKAGE_NAME; do :; done"; }

# Wait for the app to start and show all its output
adb logcat -v color -v printable --pid $(adb_wait_pid)

# Wait for the app to start and log to file
adb logcat -v printable --pid $(adb_wait_pid) > "logcat_$PACKAGE_NAME_$(date +'%Y%m%d%H%M%S').log"