ca.ualberta.cs.cmput301w15t04team04project.CLmanager.MyLocalClaimListManager.java Source code

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Here is the source code for ca.ualberta.cs.cmput301w15t04team04project.CLmanager.MyLocalClaimListManager.java

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/*
 * Copyright 2015 Weijie Sun
 * Copyright 2015 Youdong Ma
 * Copyright 2015 Yufei Zhang
 * Copyright 2015 Chenrui Lei
 * Copyright 2015 Yang Zhang
 * Copyright 2015 Ji Yang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ca.ualberta.cs.cmput301w15t04team04project.CLmanager;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.lang.reflect.Type;

import ca.ualberta.cs.cmput301w15t04team04project.models.ClaimList;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import android.content.Context;

/**
 * @author Youdong Ma
 * 
 */
public class MyLocalClaimListManager {
    protected static String FILENAME;

    /**
     * 
     */
    public MyLocalClaimListManager() {
    }

    /**
     * save claimList in certain file
     * 
     * @author Youdong Ma
     * @param context
     * @param claimList
     */
    public static void saveClaimList(Context context, ClaimList claimList, String name) {
        Gson gson = new Gson();
        try {
            FileOutputStream fos = context.openFileOutput(name, 0);
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            gson.toJson(claimList, osw);
            osw.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * load claimList form certain file
     * 
     * @author Youdong Ma
     * @param context
     * @return
     */
    public static ClaimList loadClaimList(Context context, String name) {
        ClaimList claimList = new ClaimList();
        Gson gson = new Gson();
        try {
            FileInputStream fis = context.openFileInput(name);
            Type listType = new TypeToken<ClaimList>() {
            }.getType();
            InputStreamReader isr = new InputStreamReader(fis);
            claimList = gson.fromJson(isr, listType);
            fis.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (claimList == null) {
            claimList = new ClaimList();
        }
        return claimList;

    }
}