Make the double-press power button open Google Wallet on ColorOS
ColorOS won't let you put Google Wallet on the double-press-power gesture - it only offers Camera or Access Card.
The gesture handler is hard-coded to 4 packages, one of which (com.heytap.wallet, Oppo's own wallet) isn't installed on most phones.
The fix: a tiny shim app that takes that empty com.heytap.wallet package name and just forwards to Google Wallet.
ColorOS then accepts it and lets you pick it in Settings.
Don't clone Google Wallet itself - a re-signed copy fails Play
Integrity. Real Google Wallet is never touched; the shim is a separate redirector.
It also asks for your fingerprint. Before it opens Wallet, the shim shows a fingerprint prompt, with PIN / pattern / password as a fallback.
So a double-press on a locked phone won't hand the tap-to-pay screen to whoever is holding it - cancel or fail the prompt and nothing opens.
It uses Android's built-in BiometricPrompt, no third-party libraries. This gates the gesture, not Google
Wallet itself - you can still open the Wallet app the normal way.
It works over the lock screen too - the shim fires Wallet's QUICKDRAW screen, the same pay surface Pixels use.
Prebuilt APK attached, no PC needed.
Install:
Download the attached wallet-shim.apk.
Install it from your file manager (allow "Install unknown apps" for it).
Settings, search "Double-press Power button", turn it ON, choose Google Wallet.
Done - double-press now opens Google Wallet after your fingerprint, on the lock screen too.
Please don't just trust a random APK - verify it yourself before installing. It's tied to a wallet gesture, so check it!
Heads-up: if your phone already has Oppo's own com.heytap.wallet installed, the sideload fails with "App not installed" (signature clash). On most phones that slot is empty, so you're fine.
Undo anytime: uninstall the "Google Wallet" entry you installed, then re-pick Camera on the Double-press Power button screen.
See ya !