AppRepo.java

@AppComponent.Scope
public class AppRepo {
    private final Object appMapLock = new Object();
    private Map<String, PackageInfo> appMap;
    private final IPCFunnel ipcFunnel;

    @Inject
    public AppRepo(IPCFunnel ipcFunnel) {this.ipcFunnel = ipcFunnel;}

    public Map<String, PackageInfo> getAppMap(boolean refresh) {
        synchronized (appMapLock) {
            if (appMap == null || appMap.isEmpty() || refresh) {
                appMap = new ConcurrentHashMap<>();

                List<PackageInfo> appList = ipcFunnel.getInstalledPackages(PackageManager.GET_SHARED_LIBRARY_FILES);
                for (PackageInfo pkg : appList) appMap.put(pkg.packageName, pkg);

                //noinspection deprecation
                appList = ipcFunnel.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
                for (PackageInfo pkg : appList) appMap.put(pkg.packageName, pkg);

                if (appMap.isEmpty()) throw new IPCBufferException("List of installed apps was empty!");
            }
        }
        return new HashMap<>(appMap);
    }
}