Android Open Source - android Homework

From Project

Back to project page android.
License

The source code is released under:
GNU General Public License
If you think the Android project android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

package de.nico.ha_manager.helper;
//  w w  w  . java 2 s .c o m
/* 
 * Author: Nico Alt
 * See the file "LICENSE.txt" for the full license governing this code.
 */

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

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;

import de.nico.ha_manager.R;
import de.nico.ha_manager.database.Source;

public class Homework {

    public static void deleteAll(final Context c) {
        Source s = new Source(c);
        s.delete_item(null);
    }

    public static void deleteOne(Context c, String ID) {
        Source s = new Source(c);
        s.delete_item(ID);
    }

    public static void add(Context c, String ID, String urgent, String subject,
                           String homework, String until) {
        try {
            Source s = new Source(c);
            s.open();
            s.createEntry(c, ID, urgent, subject, homework, until);
            s.close();
        } catch (Exception ex) {
            Log.e("Database:", ex.toString());
        }

    }

    public static void importIt(Context c) {
        // Check if directory exists
        File dir = new File(Environment.getExternalStorageDirectory() + "/"
                + c.getString(R.string.app_name));
        if (!(dir.exists())) {
            Utils.makeLongToast(
                    c,
                    c.getString(R.string.toast_nobackup)
                            + c.getString(R.string.app_name));
            return;
        }

        // Path for Database
        File srcDB = new File(Environment.getExternalStorageDirectory() + "/"
                + c.getString(R.string.app_name) + "/Homework.db");
        File dstDB = new File(c.getApplicationInfo().dataDir
                + "/databases/Homework.db");

        // Check if Database exists
        if (!(srcDB.exists())) {
            Utils.makeLongToast(
                    c,
                    c.getString(R.string.toast_nobackup)
                            + c.getString(R.string.app_name));
            return;

        }

        try {
            // Import Database
            FileInputStream inStream = new FileInputStream(srcDB);
            FileOutputStream outStream = new FileOutputStream(dstDB);
            FileChannel inChannel = inStream.getChannel();
            FileChannel outChannel = outStream.getChannel();
            inChannel.transferTo(0, inChannel.size(), outChannel);
            inStream.close();
            outStream.close();

        } catch (FileNotFoundException e) {
            Log.e("FileNotFoundException", e.toString());
            Utils.makeShortToast(c, c.getString(R.string.toast_import_fail));
            return;

        } catch (IOException e) {
            Log.e("IOException", e.toString());
            Utils.makeShortToast(c, c.getString(R.string.toast_import_fail));
            return;

        }
        Utils.makeShortToast(c, c.getString(R.string.toast_import_success));
    }

    public static void exportIt(Context c) {
        // Check if directory exists
        File dir = new File(Environment.getExternalStorageDirectory() + "/"
                + c.getString(R.string.app_name));
        if (!(dir.exists()))
            dir.mkdir();

        // Path for Database
        File srcDB = new File(c.getApplicationInfo().dataDir
                + "/databases/Homework.db");
        File dstDB = new File(Environment.getExternalStorageDirectory() + "/"
                + c.getString(R.string.app_name) + "/Homework.db");

        try {
            // Export Database
            FileInputStream inStream = new FileInputStream(srcDB);
            FileOutputStream outStream = new FileOutputStream(dstDB);
            FileChannel inChannel = inStream.getChannel();
            FileChannel outChannel = outStream.getChannel();
            inChannel.transferTo(0, inChannel.size(), outChannel);
            inStream.close();
            outStream.close();

        } catch (FileNotFoundException e) {
            Log.e("FileNotFoundException", e.toString());
            Utils.makeShortToast(c, c.getString(R.string.toast_export_fail));
            return;

        } catch (IOException e) {
            Log.e("IOException", e.toString());
            Utils.makeShortToast(c, c.getString(R.string.toast_export_fail));
            return;

        }
        Utils.makeShortToast(c, c.getString(R.string.toast_export_success));
    }

}
Java Source Code List
