Serialize出来ない型への対応を考える！ ref: http://qiita.com/ueno-yuhei/items/930535cf3cf627b84934

file0.java

List<Instance> list;
// ↓
ArrayList<Instance> list;

file1.java

Map<String, String> map;
// ↓
HashMap<String, String> map;

file2.java

// jsonの元の文字列を保持しておいて、受け取り先のActivity,Fragmentで再生成
JSONObject json = new JSONObject("jsonString");

file3.java

JsonObject json = new Gson().fromJson("jsonString", JsonObject.class);

file4.java

try {
  SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
  date = dateFormat.parse(dateString);
} catch(ParseException e) {
}

file5.java

Uri uri = Uri.parse("URL");

file6.java

public String jsonString;
public transient JsonObject json;
public String uriString;
public transient Uri uri;

file7.java

public void generate() {
  JsonObject json = new Gson().fromJson(jsonString, JsonObject.class);
  uri = Uri.parse(uriString);
}

java：SampleModel.java

import android.net.Uri;

import com.google.gson.Gson;
import com.google.gson.JsonObject;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.Serializable;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;


public class SampleModel implements Serializable {
    private static final long serialVersionUID = 4226701820259487692L;

    // public Map map;
    public HashMap map;

    // public List list;
    public ArrayList list;

    public transient Date date;
    public String dateString;

    public transient Uri uri;
    public String uriString;

    public transient JSONObject jsonObject;
    public String jsonObjectString;

    public transient JsonObject gsonObject;
    public String gsonObjectString;

    public SampleModel(JSONObject json) throws JSONException {
        dateString = json.getString("date");
        uriString = json.getString("uri");
        jsonObjectString = json.getJSONObject("json_object").toString();
        gsonObjectString = json.getJSONObject("json_object").toString();
        generate();
    }

    // Activityなどに渡した後に、このメソッドを呼ぶ
    public void generate() throws JSONException {
        try {
            // Date
            SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
            date = dateFormat.parse(dateString);
            // Uri
            uri = Uri.parse(uriString);
            // jsoo
            jsonObject = new JSONObject(jsonObjectString);
            // gson
            gsonObject = new Gson().fromJson(gsonObjectString, JsonObject.class);
        } catch (ParseException e) {
        }
    }
}