Patches the RealVNC 4.x Android app to fix bugs and improve usability.

Currently supports VNC Viewer 4.8.0.52006 (February 2024).

For VNC Viewer 3.x, see here for a patch to fix the double-backspace bug.

• Make the collapsed floating toolbar FAB invisible so it doesn't block the corner of the screen (you can tap it to show it again).
• Make the floating toolbar larger (to improve usability of the invisible FAB).
• Make the floating toolbar background translucent white (so the blue buttons aren't unreadable).
• Add a pin-to-home button to the connection details toolbar (since the dynamic shortcuts only includes the first four connections).
• Add long-press key-repeat support to the extension keyboard (so pressing arrow keys isn't as painful).
• Fix bug where rapidly pressing non-lockable-modifier extension keyboard keys would only send half the expected number of key presses (also so pressing arrow keys isn't as painful).

1. Install dependencies:
   • git
   • Java 11+
   • zipalign
   • apksigner (>= 0.9) (this repo contains a vendored copy)
   • apktool (= 2.8.1) (newer versions will probably work, but the patches may need to be updated) (this repo contains a vendored copy)
   • wget (only needed if downloading the APK)
2. Run ./vncpatch.sh (see ./vncpatch.sh -h for options). To modify the patches, you can amend or add new commits to the git repo created at ./src, then run ./vncpatch.sh again.
3. Uninstall the original app, then install build/signed.apk.