This demo app is for manual testing of the multi-device input feature. It creates two windows - one on the left and one on the right. You can use different input devices in these windows.

Install this using:

APP=MultiDeviceInput; m $APP && adb install $ANDROID_PRODUCT_OUT/system/app/$APP/$APP.apk

• Touch in one window, use stylus in another window, at the same time
• Visualize hovering stylus
• Pinch zoom in one window to affect the line thickness in another window
• Check whether stylus rejects touch in the same window
• (in the future) Check stylus and touch operation in the same window