Tap Tap alpha app is a port of the double tap on back of device gesture from Android 11 to any Android 7.0+ device.
It allows you to use the gesture to:
control the device (including pressing the home, back and recents buttons),
take a screenshot,
toggle the flashlight,
open your assistant and more.
Using Tap Tap alpha app “gates”, you’re able to block the gesture from working in scenarios such as when the screen is off, when you’re on a call, when an app is open and more.
It uses an accessibility service to run these tasks and stay running in the background. Tap, Tap uses the same machine learning code and TensorFlow models from the Android 11 builds with the gesture, with code directly lifted from SystemUIGoogle where needed.
You can pick from three models in the settings: Pixel 3 XL, Pixel 4 and Pixel 4 XL; allowing you to choose the one that fits your device best. Machine learning allows the gesture to be more accurately detected, and reduces the chance of accidental interactions. Sensitivity options are currently not available, but may be in a future release.
Tap, Tap – Android 11/iOS 14 Back Tap Gestures for any Android phone!
After installing the Tap Tap alpha app, you’ll have to enable the Accessibility Service in settings. Once enabled, you’ll have to choose a Device Model in Gesture settings. There are 3 Device Models corresponding to the 3 TensorFlow Lite models that Google trained for the Pixel 3 XL, Pixel 4, and Pixel 4 XL. A sensitivity setting is shown in the app’s Gesture settings, but this will be fully implemented in a future release of the app.