Android Open Source - SleepGuard Recording File

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Back to project page SleepGuard.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.szabolcs.szijarto.sleepguard;
/*from  www.  java  2 s  .com*/
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import android.content.Context;
import android.os.Environment;
import android.widget.Toast;

public class RecordingFile implements java.io.Serializable {

  private static final long serialVersionUID = 19743000L;

  private String fileName, displayName;
  private File datDir, csvDir, pngDir;
  private transient Context myc;
  public static final String datExtension = ".dat";
  public static final String csvExtension = ".csv";
  public static final String pngExtension = ".png";
  public static final String EXTRA_RECORDINGFILEOBJECT = "com.szabolcs.szijarto.sleepguard.Recording";

  // constructor getting only a context
  public RecordingFile(Context c) {
    myc = c;
    setDirs();
  }

  // constructor getting a .dat filename
  public RecordingFile(Context c, String dfn) {
    myc = c;
    setDirs();
    setFileNameFromDat(dfn);
  }

  private void initContextDirFileName(Context c, Date d1, Date d2) {
    myc = c;
    setDirs();
    setFileNameFromTimestamps(d1, d2);

  }

  // constructor getting start and end timestamps of the recording
  public RecordingFile(Context c, long t1, long t2) {
    Date d1 = new Date(t1);
    Date d2 = new Date(t2);
    initContextDirFileName(c, d1, d2);
  }

  // constructor getting start and end date of the recording
  public RecordingFile(Context c, Date d1, Date d2) {
    initContextDirFileName(c, d1, d2);
  }

  public void setContext(Context c) {
    myc = c;
  }

  private void setDirs() {
    datDir = myc.getExternalFilesDir(null);
    csvDir = myc.getExternalFilesDir(null);
    pngDir = Environment
        .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
  }

  public void setFileNameFromDat(String s) {
    fileName = s.substring(0,
        s.length() - RecordingFile.datExtension.length());
    setDisplayName();
  }

  public void setFileNameFromTimestamps(Date timeStarted, Date timeStopped) {
    SimpleDateFormat ft = new SimpleDateFormat("yyyyMMddHHmmss", Locale.US);
    fileName = "sleepguard_" + ft.format(timeStarted) + "_"
        + ft.format(timeStopped);
    setDisplayName();
  }

  private void setDisplayName() {
    if (fileName != null) {
      String s = fileName;
      // get start and end timestamp from the filename and format it for
      // display
      displayName = s.substring(11, 15) + "." + s.substring(15, 17) + "."
          + s.substring(17, 19) + " " + s.substring(19, 21) + ":"
          + s.substring(21, 23) + ":" + s.substring(23, 25);
    } else {
      displayName = "";
    }
  }

  public String getDisplayName() {
    return displayName;
  }

  public String toString() {
    return displayName;
  }

  public String getDatFileName() {
    return fileName + datExtension;
  }

  public String getCsvFileName() {
    return fileName + csvExtension;
  }

  public String getPngFileName() {
    return fileName + pngExtension;
  }

  public File getDatDir() {
    return datDir;
  }

  public File getCsvDir() {
    return csvDir;
  }

  public File getPngDir() {
    return pngDir;
  }

  public String getDatFullPath() {
    return datDir.toString() + "/" + getDatFileName();
  }

  public String getCsvFullPath() {
    return csvDir.toString() + "/" + getCsvFileName();
  }

  public String getPngFullPath() {
    return pngDir.toString() + "/" + getPngFileName();
  }

  public void deleteFiles(boolean delDat, boolean delCsv, boolean delPng) {
    File f;
    if (delDat) {
      f = new File(getDatFullPath());
      f.delete();
    }
    if (delCsv) {
      f = new File(getCsvFullPath());
      f.delete();
    }
    if (delPng) {
      f = new File(getPngFullPath());
      f.delete();
    }
  }

  public void refreshFiles(boolean refreshCsv, boolean refreshPng) {
    // TODO display progress info
    Recording r = deserializeRecording();
    // TODO this is not really needed... for testing only
    r.detectPeaks();
    if (refreshCsv) {
      saveCsv(r);
    }
    if (refreshPng) {
      savePng(r);
    }
  }

  public void save(Recording r, boolean saveDat, boolean saveCsv,
      boolean savePng) {
    // save the recording in 3 formats to external storage
    String state = Environment.getExternalStorageState();
    if (!Environment.MEDIA_MOUNTED.equals(state)) {
      Toast.makeText(myc, "Save error: cannot write to external storage",
          Toast.LENGTH_LONG).show();
      ;
      return;
    }
    // TODO display progress info
    if (saveDat) {
      serializeRecording(r);
    }
    if (saveCsv) {
      saveCsv(r);
    }
    if (savePng) {
      savePng(r);
    }
  }

  public void serializeRecording(Recording r) {
    // serialize object r to the dat file
    try {
      FileOutputStream fout = new FileOutputStream(getDatFullPath());
      ObjectOutputStream oos = new ObjectOutputStream(fout);
      oos.writeObject(r);
      oos.close();
      fout.close();
    } catch (IOException i) {
      Toast.makeText(myc, "DAT save error: " + i.toString(),
          Toast.LENGTH_SHORT).show();
      i.printStackTrace();
    }
  }

  public Recording deserializeRecording() {
    try {
      FileInputStream fileIn = new FileInputStream(getDatFullPath());
      ObjectInputStream in = new ObjectInputStream(fileIn);
      Recording r = (Recording) in.readObject();
      in.close();
      fileIn.close();
      return r;
    } catch (IOException i) {
      Toast.makeText(myc,
          "Exception when deserializing Recording: " + i.toString(),
          Toast.LENGTH_SHORT).show();
      i.printStackTrace();
      return null;
    } catch (ClassNotFoundException c) {
      Toast.makeText(myc,
          "Exception when deserializing Recording: " + c.toString(),
          Toast.LENGTH_SHORT).show();
      c.printStackTrace();
      return null;
    }
  }

  public void saveCsv(Recording r) {
    try {
      File f = new File(getCsvDir(), getCsvFileName());
      BufferedWriter w = new BufferedWriter(new FileWriter(f));
      r.dumpToCsv(w);
      w.close();
    } catch (IOException i) {
      Toast.makeText(myc, "CSV save error: " + i.toString(),
          Toast.LENGTH_SHORT).show();
      i.printStackTrace();
    }
  }

  public void savePng(Recording r) {
    try {
      File f = new File(getPngDir(), getPngFileName());
      FileOutputStream of = new FileOutputStream(f);
      r.drawChartBitmap();
      r.dumpToPng(of);
      of.close();
    } catch (IOException i) {
      Toast.makeText(myc, "PNG save error: " + i.toString(),
          Toast.LENGTH_SHORT).show();
      i.printStackTrace();
    }
  }

}

Java Source Code List

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