Android Open Source - BusTicketer File Handler

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Back to project page BusTicketer.

License

The source code is released under:

Copyright (c) 2013, Nelspike All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Red...

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Java Source Code

package bus.ticketer.utils;
//  w  w  w  .  j a  v a2s .  c om
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

import bus.ticketer.objects.Ticket;

import android.os.Environment;
import android.util.SparseArray;

public class FileHandler {

  private String filename;
  private String toWrite;

  public FileHandler(String filename, String toWrite) {
    this.filename = filename;
    this.toWrite = toWrite;
  }

  public FileHandler() {
  }

  public File getAlbumStorageDir(String filename) {
    File file = new File(
        Environment
            .getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS),
        filename);
    if (!file.mkdirs()) {
    }
    return file;
  }

  public void writeToFile() {
    File directory = getAlbumStorageDir("BusTicketer");
    File file = new File(directory, filename);

    FileOutputStream outputStream = null;
    try {
      outputStream = new FileOutputStream(file);
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }

    try {
      outputStream.write(toWrite.getBytes());
      outputStream.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public ArrayList<String> readFromFile() {
    String scan;
    ArrayList<String> ret = new ArrayList<String>();
    File directory = getAlbumStorageDir("BusTicketer");
    File file = new File(directory, filename);

    if(!file.exists()) {
      try {
        file.createNewFile();
      } catch (IOException e) {
      }
    }
    
    FileReader fileReader = null;
    try {
      fileReader = new FileReader(file);
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }
    BufferedReader br = new BufferedReader(fileReader);

    try {
      while ((scan = br.readLine()) != null)
        ret.add(scan);
    } catch (IOException e) {
      e.printStackTrace();
    }
    try {
      br.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
    
    return ret;
  }
  
  public void deleteFile() {
    File directory = getAlbumStorageDir("BusTicketer");
    File file = new File(directory, filename);
    
    file.delete();
  }
  
  public static boolean checkFileExistance(String name) {
    File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS), "BusTicketer");
    File[] files = file.listFiles();
    
    for(File f : files) {
      if(f.getName().equals(name))
        return true;
    }
    
    return false;
  }
  
  public static SparseArray<ArrayList<Ticket>> getTicketCount() {
    File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS), "BusTicketer");
    File[] files = file.listFiles();
    SparseArray<ArrayList<Ticket>> ret = new SparseArray<ArrayList<Ticket>>();
    ArrayList<Ticket> t1Tickets = new ArrayList<Ticket>();
    ArrayList<Ticket> t2Tickets = new ArrayList<Ticket>();
    ArrayList<Ticket> t3Tickets = new ArrayList<Ticket>();
    
    for(File f : files) {
      if(f.getName().contains("t1Ticket"))
        t1Tickets.add(new Ticket(Integer.parseInt(f.getName().split("-")[1].split("\\.")[0])));
      else if(f.getName().contains("t2Ticket"))
        t2Tickets.add(new Ticket(Integer.parseInt(f.getName().split("-")[1].split("\\.")[0])));
      else if(f.getName().contains("t3Ticket"))
        t3Tickets.add(new Ticket(Integer.parseInt(f.getName().split("-")[1].split("\\.")[0])));
    }
    
    ret.append(1, t1Tickets);
    ret.append(2, t2Tickets);
    ret.append(3, t3Tickets);
    
    return ret;
  }
  
  public void deleteFiles() {
    File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_NOTIFICATIONS), "BusTicketer");
    File[] files = file.listFiles();
    
    for(File f : files)
      f.delete();
  }
  
  public void setToWrite(String toWrite) {
    this.toWrite = toWrite;
  }

  public String getUsername() {
    filename = "client";
    return readFromFile().get(0);
  }
  
}

Java Source Code List