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KeyEvent Display APK

Latest Version 1.0.26 for Windows
Updated 2020-07-06

App information

Version 1.0.26 (#26)

Updated 2020-07-06

APK Size 1.8 MB

Requires Android Android 4.2+ (Jelly Bean)

Offered by Alexandros Schillings

Category Free Tools App

App id aws.apps.keyeventdisplay

Developer's notes Use this application to check/debug the keycodes of physical device buttons.

Screenshot

Click on the image to see full size

Latest updates

What's new in KeyEvent Display 1.0.26

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

Editor's review

Download the latest KeyEvent Display application, version 1.0.26, compatible with Windows 10/11 (using emulators such as Bluestacks), Android devices. This free Tools app is developed by Alexandros Schillings and is easy to download and install.

Previous versions, including 1.0.26, are also available. If you need help or have any problems, please let us know.

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

App permissions

KeyEvent Display 1.0.26 APK requires following permissions:

Allows an application to write to external storage.

Allows an application to read the low-level system log files.

Allows an application to read from external storage.

Ratings and Reviews

Rating: 4.5/5 based on 1+ reviews

(*) is required

1 ★ It just sits there are stares at me. Nothing happens. No way to reset it. Uninstalled and re-Installed several times. No help docs.

1 ★ Very bad app

5 ★ As a developer, this app is indeed very useful to me. But, the ability to change font size should be included. Also, it displays only the key codes, without the names. It would have been better if the key names could be displayed.

5 ★ Needs some errors fixed but other than that it's good

5 ★ 21APR19: Awesome. Found my hardware key mapping easily with this app. No advertising. Brilliant.

Previous versions

KeyEvent Display 1.0.26 APK for Windows (#26, 1.8 MB)