KeyEvent-Display---Android
KeyEvent-Display---Android copied to clipboard
alt236
This application will display all Button press related messages (using Android KeyEvents, and logcat & kmsg parsing). Useful when porting Android to different hardware and buttons don’t work.
KeyEvent Display - Android
Once, I was playing with a number of Chinese tablets and trying different ROMs on them as they are technically the same hardware (HSG X5A variants).
I've had some problems getting the hard buttons to work though, so I wrote this application to detect key events and print them out. It will print out the following:
-
KeyEvents: The KeyEvents as Android understands them (KeyUp, KeyDown, KeyLongPress, KeyMultiple)
-
LogCat: Any relevant messages in logcat. Its filtered based on keywords declared in
arrays.xml -
Kernel: Any relevant messages in the kernel log. Its filtered based on keywords declared in
arrays.xml. Kernel log parsing needs root.
The three checkboxes at the top control what information will be displayed.
-
This is a personal debug tool, but I hope it will be of some use to someone else.
-
No Ads.
Notes
-
While the application is running, the only "hard" keys which should work is "Home" and power. All others will produce their keycodes.
-
The SU request is to read the kernel log, so I can check if any keyevents are thrown by the kernel.
-
The location of keylayout files in Android is
/system/usr/keylayout. -
Kernel log parsing needs root
-
Both logcat and kernel log monitoring will only display lines containing words from two arrays in
arrays.xml
Currently the filters are:
- Logcat:
- HwGPIOE->GPDA
- keycode
- keycharacter
- Kernel:
- HwGPIOE->GPDA
- keycode
- keycharacter
Permission Explanation
-
READ_LOGS: Used to access the Logcat log. -
WRITE_EXTERNAL_STORAGE: Used to write the exported data to the SD card.
Changelog
- v0.0.1: First public release.
- v0.0.2: Improved stability, added Exit button.
- v0.0.3: Code updates.
- v1.0.0: Redesign, added Android TV support.
Links
- Market link: https://market.android.com/details?id=aws.apps.keyeventdisplay
- Webpage: http://aschillings.co.uk/html/keyevent_display.html
- Github: https://github.com/alt236/KeyEvent-Display---Android
Credits
Author: Alexandros Schillings.
All logos are the property of their respective owners
The code in this project is licensed under the Apache Software License 2.0.
Copyright (c) 2011 Alexandros Schillings.
alt236