KeyEvent Display

1.0.26

Alexandros Schillings

4.00

156 reviews

10,000+
Downloads

Free

Use this application to check/debug the keycodes of physical device buttons.

Download from Google Play

Pros & Cons

Niche focus speeds debugging of hardware key events
Filters logcat and kernel logs to show relevant messages
Open-source with transparent code and no ads
Android TV support broadens device compatibility

Kernel log parsing requires root access
Keyword filters are hardcoded in arrays.xml and require recompile to modify
Permissions include READ_LOGS and storage access, which may raise privacy considerations

About KeyEvent Display

KeyEvent Display is a tools app developed by Alexandros Schillings.

Download Statistics

KeyEvent Display has been downloaded 36 thousand times. In the last 30 days, the app was downloaded 36 times.

User Ratings

KeyEvent Display is rated 4.00 out of 5 stars. The rating is based on 160 ratings.

App Information

KeyEvent Display is FREE to download. The APK download size is 1.83 MB. The latest version available is 1.0.26. The last update was on July 5, 2020.

Technical Requirements

KeyEvent Display requires Android 1.6+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2010.

Description

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 (i.e. you need to recompile the app to change them at the moment)

Currently the filters are:

Logcat:
|-HwGPIOE->GPDA
|-keycode
|-keycharacter

Kernel:
|-HwGPIOE->GPDA
|-keycode
|-keycharacter

Permissions
--------------
READ_LOGS: Used to access the Logcat log.
WRITE_EXTERNAL_STORAGE: Used to write the exported data to the SD card.

This application is open source. The code can be found here: https://github.com/alt236/KeyEvent-Display---Android

Recent changes:
* v1.0.0: Redesign, added Android TV support.

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More data about KeyEvent Display

Price	Free to download
Total downloads	36 thousand
Recent downloads	36
Rating	4.00 based on 160 ratings
Ranking	Not ranked
Version	1.0.26
APK size	1.83 MB
Number of libraries	0
Designed for Android	1.6+
Suitable for	Everyone
Ads	NO ads

App Performance Report

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Alternative downloads for the KeyEvent Display app

KeyEvent Display compared with similar apps

Common keywords of similar apps

Kernel Log Logcat Keyevents Keyevent Check Debug Keycodes Buttons Hard Work Print Relevant Messages Filtered Based Keywords Declared Parsing Keylayout Hwgpioe Gpda Keycode Keycharacter Application Display Root

Keywords missing from this app

App Device Information Button Features Codes Apps Phone Menu System Api Access Cpu Font Ads Recent Screen Storage Battery Secret Phones Control Data Ability Adb Developer Dex Version Color Key Tools Test Required Info User Network Files Permissions Details Crypto Logs Settings Apk Ui Debugging Launcher Accessibility

Google Play Rating history and histogram

Rating history

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Downloads over time

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KeyEvent Display has been downloaded 36 thousand times. Over the past 30 days, it has been downloaded 36 times.

Changelog of KeyEvent Display

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Developer information for Alexandros Schillings

Alexandros Schillings

aschillings.dev@gmail.com

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Comments on KeyEvent Display for Android

★★★★★ Mark Stevens · Nov 12, 2021

Saves me from having to write code to discover the key codes. Excellent !

★★★★☆ Oldarney · Jul 2, 2011

Would be great if it worked witm software keyboards, good app anyway.

★★★★★ alt236 · Mar 12, 2011

@Kathleen, The application exits when you press the home button on the device. If that doesn't happen to you email me, and I'll try to fix it.

★★★★☆ A Google User · Dec 16, 2011

Not bad! Author responded quickly to review comments and emails, too!

★☆☆☆☆ A Google User · Mar 9, 2011

Please add an exit/disable key capture button. Your app should never capture key events without a way to interrupt.

Google Play Rankings for KeyEvent Display

This app is not ranked

Technologies used by KeyEvent Display

3 permissions

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