Save custom object array to Shared Preferences

问题:

Can I save my own object array to the SharedPreferences, like in the post below?

Android ArrayList of custom objects - Save to SharedPreferences - Serializable?

But there he doesn't save an array, so is there a possibility to save a custom object array to SharedPreferences like in the post of the link?

回答1:

You can use gson to serialize class objects and store them into SharedPreferences. You can downlaod this jar from here https://code.google.com/p/google-gson/downloads/list

SharedPreferences  mPrefs = getPreferences(Context.MODE_PRIVATE); 

To Save:

Editor prefsEditor = mPrefs.edit(); Gson gson = new Gson(); String json = gson.toJson(MyObject); prefsEditor.putString("MyObject", json); prefsEditor.commit(); 

To Retreive:

Gson gson = new Gson(); String json = mPrefs.getString("MyObject", ""); MyObject obj = gson.fromJson(json, MyObject.class); 

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