this class is a generic class for your shared prefernces api.

LocalData.kt

object LocalData {
    /**
     * Set any type of shared preferences value
     * @param key of the shared preferences which the caller is desire to set
     * @param value any type
     */
    operator fun<T> set(key: String?, value: T) {
        /* below you can put whatever shared preferences api you use, I prefer Hawk
        * it helps to store objects immediately without need to use GSON in shared preferences
        *  */
        Hawk.put(key, value)
    }

    /**
     * Get any type of value from the shared preference
     * @param key the key of the shared preference
     * @param defaultValue
     * @return same type of the default value which has been passed in
     */
    operator fun<T> get(key: String?, defaultValue: T? = null): T {
        return if (defaultValue != null) Hawk.get(key, defaultValue) else Hawk.get(key)
    }
}

/// HOW TO USE :

LocalData["name"]= "Qamar A. Safadi" // store in name
var name: String? = LocalData["name"] // get name -> Qamar A. Safadi