Using "adb logcat" Command for Debugging

Android Tutorials - Herong's Tutorial Examples

∟Using "adb logcat" Command for Debugging

This chapter provides tutorial notes on the 'adb logcat' command. Topics include using 'adb logcat' command options and arguments; viewing log buffers: main, events, and radio; creating rotated log files; control log format as 'brief' or 'long'; filtering out log entries by priority and process tag; retrieving Java exceptions from AndroidRuntime logs.

"adb logcat" Command - Displaying System Logs

"adb logcat" Command Options and Log Buffers

"adb logcat -v" Command - Log Format Control

"adb logcat" Command Arguments - Output Filters

Using "adb logcat" Command to Track the Lifecycle of an Application

Java Exceptions in AndroidRuntime Error Log

Takeaways:

"adb logcat" command dumps log entries from 3 log buffers: main, events and radio.
"adb logcat -v long" command dumps log entries in long format.
"adb logcat -f /sdcard/Download/Android.log -r 1024 -n 8" commands dumps log entries into rotated log files on the device.
"adb logcat AndroidRuntime:E *:S" dumps only error log entries generated from the "AndroidRuntime" process, including Java exceptions.