it.nicola_amatucci.util.JsonAndroidLocalIO.java Source code

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Here is the source code for it.nicola_amatucci.util.JsonAndroidLocalIO.java

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/*    
Copyright (C) 2011  Nicola Amatucci
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
    
NOTE: read README first
*/

package it.nicola_amatucci.util;

import java.io.BufferedInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.json.JSONObject;

import android.content.Context;
import android.util.Log;

public class JsonAndroidLocalIO {
    public static <T> T loadData(Context context, String filename, Class<T> obj) {
        StringBuilder strContent = new StringBuilder("");
        try {
            BufferedInputStream in = new BufferedInputStream(context.openFileInput(filename));

            int ch;
            while ((ch = in.read()) != -1)
                strContent.append((char) ch);

            in.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        if (strContent.length() > 0) {
            try {
                Log.i("TAG", strContent.toString());
                JSONObject json = new JSONObject(strContent.toString());
                return Json.object_from_json(json, obj);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        return null;
    }

    public static <T> boolean saveData(Context context, String filename, T o, Class<T> obj) {
        String document = null;

        try {
            document = Json.json_from_object(o, obj).toString();

            if (document != null) {
                Log.i("TAG", document);
                FileOutputStream fos = context.openFileOutput(filename, Context.MODE_PRIVATE);
                fos.write(document.getBytes());
                fos.close();
                return true;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return false;
    }
}