UpdatePreferences.kt

class UpdatePreferences @Inject constructor(context: Context) {

    companion object {
        private const val UPDATE_DETECTOR_SHARED_PREFERENCES = "updateDetector"

        private const val VERSION = "updateDetector:version"
    }

    private val sharedPreferences: SharedPreferences by lazy { context.getSharedPreferences(UPDATE_DETECTOR_SHARED_PREFERENCES, Activity.MODE_PRIVATE) }

    var version: String?
        get() = sharedPreferences.getString(VERSION, null)
        set(value) {
            value?.let { sharedPreferences.putString(VERSION, it) }
        }
}