Android Open Source - sensors-monitoring-android Zip Creation Task

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package fr.inria.tyrex.sensors.monitoring;
//from   www  .j  a va  2  s.  c  o m
import android.content.Context;
import android.hardware.Sensor;
import android.os.AsyncTask;
import android.os.Build;
import android.util.SparseArray;

import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * Creation of log files asynchronously and put it on a zip
 * <p/>
 * Created by Thibaud Michel on 13/01/15.
 */
public class ZipCreationTask extends AsyncTask<String, Integer, String> {


  private final static String descriptionFileName = "description.txt";
  private final static SparseArray<String> sensorsOutputFiles;
  public final static int totalTasks;

  static {
    sensorsOutputFiles = new SparseArray<String>();
    sensorsOutputFiles.append(Sensor.TYPE_ACCELEROMETER, "accelerometer.txt");
    sensorsOutputFiles.append(Sensor.TYPE_GYROSCOPE, "gyroscope.txt");
    sensorsOutputFiles.append(Sensor.TYPE_GYROSCOPE_UNCALIBRATED, "gyroscope-uncalibrated.txt");
    sensorsOutputFiles.append(Sensor.TYPE_MAGNETIC_FIELD, "magnetic-field.txt");
    sensorsOutputFiles.append(Sensor.TYPE_LINEAR_ACCELERATION, "linear-acceleration.txt");
    sensorsOutputFiles.append(Sensor.TYPE_GRAVITY, "gravity.txt");
    sensorsOutputFiles.append(Sensor.TYPE_ROTATION_VECTOR, "rotation-vector.txt");
    sensorsOutputFiles.append(Sensor.TYPE_STEP_DETECTOR, "step-detector.txt");
    sensorsOutputFiles.append(Sensor.TYPE_MAGNETIC_FIELD_UNCALIBRATED, "magnetic-field-uncalibrated.txt");
    sensorsOutputFiles.append(RecordMonitor.SENSOR_TYPE_LOCATION, "location.txt");

    totalTasks = sensorsOutputFiles.size()+1;
  }


  private final Context mContext;
  private final ZipCreationListener mListener;

  private int taskNumber;


  public ZipCreationTask(Context context, ZipCreationListener listener) {

    mContext = context;
    mListener = listener;
    taskNumber = 1;

  }


  @Override
  protected String doInBackground(String... filePaths) {

    if(filePaths.length == 0) {
      return null;
    }

    String filePath = filePaths[0];

    SparseArray<Map<Double, Object[]>> logs = RecordLogs.getInstance().getLogs();

    try {

      FileOutputStream fos = new FileOutputStream(filePath);
      BufferedOutputStream bos = new BufferedOutputStream(fos);
      ZipOutputStream zos = new ZipOutputStream(bos);


      for(int i = 0; i < sensorsOutputFiles.size(); i++){

        writeInZip(zos, sensorsOutputFiles.valueAt(i), logs.get(sensorsOutputFiles.keyAt(i)));
        publishProgress(taskNumber++);

      }

      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

      zos.putNextEntry(new ZipEntry(descriptionFileName));
      zos.write(mContext.getString(R.string.description_file_begin, sdf.format(new Date()), Build.MODEL).getBytes());
      InputStream descriptionFile = mContext.getResources().getAssets().open("description.txt");

      byte[] buffer = new byte[65536 * 2];
      int read;
      while ((read = descriptionFile.read(buffer)) != -1) {
        zos.write(buffer, 0, read);
      }

      zos.closeEntry();

      zos.close();
      bos.close();
      fos.close();

      publishProgress(taskNumber);

      return filePath;

    } catch (IOException e) {
      e.printStackTrace();
      return null;
    }
  }


  private void writeInZip(ZipOutputStream zos, String fileName, Map<Double, Object[]> data) {

    try {
      zos.putNextEntry(new ZipEntry(fileName));
      for (Map.Entry<Double, Object[]> entry : data.entrySet()) {
        Object[] values = entry.getValue();
        String output = String.valueOf(entry.getKey());
        for (Object value : values) {
          output += " " + value;
        }
        output += "\n";
        zos.write(output.getBytes());
      }
      zos.closeEntry();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  @Override
  protected void onProgressUpdate(Integer... values) {
    super.onProgressUpdate(values);

    if(mListener != null && values.length > 0) {
      mListener.onSubTaskFinished(values[0]);
    }
  }

  @Override
  protected void onPostExecute(String filePath) {
    super.onPostExecute(filePath);

    if(mListener != null) {
      mListener.onTaskFinished(filePath);
    }
  }

  public interface ZipCreationListener {

    public void onSubTaskFinished(int taskNumber);
    public void onTaskFinished(String filePath);

  }

}

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