private static final IPackageManager PACKAGE_MANAGER = IPackageManager.Stub.asInterface(

[Baxxbanny1]

private static final IPackageManager PACKAGE_MANAGER = IPackageManager.Stub.asInterface(
new ShizukuBinderWrapper(SystemServiceHelper.getSystemService("package")));

public static void grantRuntimePermission(String packageName, String permissionName, int userId) {
try {
PACKAGE_MANAGER.grantRuntimePermission(packageName, permissionName, userId);
} catch (RemoteException tr) {
throw new RuntimeException(tr.getMessage(), tr);
}
}

Originally posted by @moomhanse-sys in RikkaApps/websites#79 (review)