SharedPreferences 存 object

• 寫入任意 Class (泛型)的寫法：

public void saveObject(Object object, String prefKey) {
    Gson gson = new Gson();
    String json = gson.toJson(object);
    Editor prefsEditor = currentPref.edit();
    prefsEditor.putString(prefKey, json);
    prefsEditor.commit();
}

• 回傳任意 Class (泛型)的寫法：

public <T> T getObject(String prefKey, Class<T> classOfT) {
    Gson gson = new Gson();
    String json = currentPref.getString(prefKey, "");
    T obj = gson.fromJson(json, classOfT);
    return obj;
}

Ref.

StoreandRetrieveObjectClassDemo

tags: 實作相關