Identify Input Device Information in Android

To identify the information about the input device connected to Android platform, we can use “getevent” as below,

Get List of All Input Devices

$ adb shell getevent -lp | grep "add device"

The output of this might look like as below,

add device 1: /dev/input/event8
add device 2: /dev/input/event7
add device 3: /dev/input/event1

Now, from this if we want to get more detailed information for event1, we can use below command which will give use detailed information about what kind of device it is, its name and all.

$ adb shell getevent -il /dev/input/event1
add device 5: /dev/input/event1
  bus:      0018
  vendor    0000
  product   0000
  version   0000
  name:     "fts_ts"
  location: ""
  id:       ""
  version:  1.0.1
  events:
    KEY (0001): KEY_W                 KEY_E                 KEY_U                 KEY_O                
                KEY_S                 KEY_L                 KEY_Z                 KEY_C                
                KEY_V                 KEY_M                 KEY_UP                KEY_LEFT             
                KEY_RIGHT             KEY_DOWN              KEY_WAKEUP            BTN_TOUCH            
    ABS (0003): ABS_MT_SLOT           : value 0, min 0, max 9, fuzz 0, flat 0, resolution 0
                ABS_MT_TOUCH_MAJOR    : value 0, min 0, max 255, fuzz 0, flat 0, resolution 0
                ABS_MT_POSITION_X     : value 0, min 0, max 1080, fuzz 0, flat 0, resolution 0
                ABS_MT_POSITION_Y     : value 0, min 0, max 2160, fuzz 0, flat 0, resolution 0
                ABS_MT_TRACKING_ID    : value 0, min 0, max 65535, fuzz 0, flat 0, resolution 0
  input props:
    INPUT_PROP_DIRECT

As we can see from the events ( ABS_MT_POSITION_X and ABS_MT_POSITION_Y ) supported and input property (INPUT_PROP_DIRECT), above is a multitouch touchscreen.

We can also get the more detailed information about input devices using below command,

$ adb shell dumpsys input

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