Query for a package

# Fetch Usage for a specific package

To query the usage details for any specific package is as simple as it can get.

Monitor.scan().queryFor(new PackageContracts.View() {

            @Override
            public void getUsageForPackage(AppData appData, int duration) {
                // complete details of requested package
            }
        }).whichPackage(packageName).fetchFor(DurationRange.TODAY);

check here