Connect the Android phone to the computer via USB and the phone acts as a touchpad device. The phone speaks native USB HID mouse interface. The computer sees an HID-compliant mouse plug in. No driver needs to be installed on the computer and no apk needs to be installed on the phone.
The test program android_hid_mouse_test has following functions.
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| [D] |
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| [A] | [B] |
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[A, D]: Tapping in this area makes a left-button mouse click
[B]: Tapping in this area makes a right-button mouse click
[C]: Move finger to this area to exit mouse function
[A, B, D]: Mouse movement area
[A, D]: Touch and hold your finger for 1 second in this area to make a
left-button mouse pressed (vibration alert). Move your another
finger to have a drag action. Drop action is made once your fingers
are off the touchpad.
TODO: Add HID USB configuration in system\core\rootdir\init.usb.rc and then we can 'setprop sys.usb.config hid' to enable HID mouse interface and automatically run test program.
Have fun. Hsinko Yu hsinkoyu@gmail.com