SharePreferenceUtils for Android - the utils class to help you working with SharePreference

SharePrefUtils.java

public class SharePrefUtils {
    public enum Key{
        //list of your keys here
    }
    
    private static SharedPreferences getSharePreference(Context context){
        return context.getSharedPreferences("your_pref",Context.MODE_PRIVATE);
    }

    private static SharedPreferences.Editor getEditor(Context context){
        SharedPreferences sharedPreferences = getSharePreference(context);
        return sharedPreferences.edit();
    }
    
    /**
     * check key exist or not
     */ 
    public static boolean contain(Context context,Key key) {
        return getSharePreference(context).contains(key.name());
    }
    
    /**
     * Clear all
     */
    public static void clear(Context context,Key key) {
        getSharePreference(context).edit().remove(key.name()).commit();
    }

    public static String getString(Context context, Key key) {
        return getSharePreference(context).getString(key.name(),null);
    }
    
    public static void saveString(Context context, Key key, String value){
        getEditor(context).putString(key.name(),value).commit();
    }

    public static void saveLong(Context context, Key key, long value) {
        getEditor(context).putLong(key.name(),value).commit();
    }

    public static long getLong(Context context, Key key){
        return getSharePreference(context).getLong(key.name(),0);
    }
    //Save json object
    public static void saveObject(Context context, Key key, Object obj){
        Gson gson = new Gson();
        String json = gson.toJson(obj);
        getEditor(context).putString(key.name(), json).commit();
    }

    public static <T> T getObject(Context context, Key key, Class<T> clazz){
        Gson gson = new Gson();
        String json = getSharePreference(context).getString(key.name(), "");
        return gson.fromJson(json, clazz);
    }
}