There are some apps to control your PC from Android Wear via Android phone/tablet. However I couldn't find apps to control Android phone from Android wear. This is just a challenge to do that.
Android has Input SubSystem, /dev/input/eventX the same as Linux, processing user input from input devices including touch screen. We can emulate user input by injecting input event to Input SubSystem, but normal user has no permissions and that is protected by SELinux. Therefore we need root permission and changing SELinux policy.
Use setenforce or supolicy command.
I referred to
stackoverflow:Q27496968.
If the supolicy command is not available on your device, and you wish to automate changing of the SELinux policy use: SELinuxModeChanger (requires root).
Android device has some /dev/input/eventX, X is number from 0, so you need to know which eventX links to your touch screen. The number of touch screen is depending on device. The following page is helpful for eventX: LMT Launcher's thread on XDA
For Nexus4, touch screen is /dev/input/event2, and Ratio X = 200%, and Ratio Y = 200%.
adb shell getevent -i
This command lists up /dev/input/eventX with details.
Touch screen device has KEY (0001) and ABS (0003) entries in events section.
And a row labeled 0035 in ABS (0003) describes x-axis of touch screen.
Range of x-axis is from min to max.
You get a value for Ratio X in Wearable Pad settings by dividing the max by pixels of width of your screen.
For Ratio Y, use max value in a row labeled 0036.
If cannot be divided as percent, round down to the nearest decimal percent.
IMPORTANT: Tap and longpress to exit Wearable Pad or perform extra actions.
| Phone/Tablet | Wear | |
|---|---|---|
| Tap | Tap | |
| Double Tap | Double Tap | |
| Grab Mode | Triple Tap | Press without keeping on pressing Wear (From v0.2.1) |
| Taps (Up to 15) | Taps | |
| Move Cursor | Swipe | |
| Swipe | Tap + Swipe | Swipe after single tap |
| Tap + Swipe | Double Tap + Swipe | Zoom in/out by one finger |
| Taps + Swipe | Tap + Taps + Swipe | One more tap |
| Longpress | Long-Longpress | Keep pressing |
-
Turn screen on automatically
Send wake up signal to handheld when start Wearable Pad.
-
Grab mode
Longpress without keeping on pressing Wearable Pad until another tap event. You can move icon on homescreen and change area of text selection.
-
Transfer mode (from v0.3.0)
Transfer touch event to another Android device.
Wear ---> paired Phone (Transfer) ---> Tablet (Receiver)
| Phone/Tablet | Wear |
|---|---|
| Tap | Tap |
| Move Cursor | Swipe |
| Swipe | Longpress + Swipe |
| Tap + Swipe | Double Tap + Swipe |
| Taps + Swipe | Tap + Taps + Swipe |
| Longpress | Long-Longpress |