它是确定保存一个JSON数组中的共享preferences？ [英] Is it ok to save a JSON array in SharedPreferences?

问题描述

我有一个JSON数组，我需要保存。我在想序列化，但会是更好的只是将其保存为一个字符串的共享preferences，然后重建它，当我需要阅读它？

I have a JSON Array that I need to save. I was thinking about serializing it, but would it be better to just save it as a string in SharedPreferences and then rebuild it when I need to read it in?

推荐答案

在Java中的JSON对象未实现serialaizable开箱。我看到别人扩展类，允许这一点，但您的具体情况，我只想建议存储JSON对象作为一个字符串，并使用其toString（）函数。我已经成功与此有关。

The JSON object in Java does not implement serialaizable out of the box. I have seen others extend the class to allow that but for your situation I would simply recommend storing the JSON object as a string and using its toString() function. I have had success with this.

editor.putString("jsondata", jobj.toString());

和把它找回来：

String strJson = sharedPref.getString("jsondata","0");//second parameter is necessary ie.,Value to return if this preference does not exist. 
if(strJson != null) JSONObject jsonData = new JSONObject(strJson);

<一个href="http://developer.android.com/reference/org/json/JSONObject.html#JSONObject(java.lang.String)">http://developer.android.com/reference/org/json/JSONObject.html#JSONObject(java.lang.String)

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