Android Open Source - SleepGuard Recording List View

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Back to project page SleepGuard.
License

The source code is released under:
GNU General Public License
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Java Source Code

package com.szabolcs.szijarto.sleepguard;
/*from   ww  w .  java  2  s .com*/
import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.LinkedList;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.util.AttributeSet;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class RecordingListView extends ListView implements OnItemClickListener,  OnItemLongClickListener {

  LinkedList<RecordingFile> recordingList = new LinkedList<RecordingFile>();  // list of .dat filenames containing serialized Recording objects
  private ActionMode mActionMode = null;

  public RecordingListView(Context context) {
    super(context);
    register4clicks();
  }

  public RecordingListView(Context context, AttributeSet attrs) {
    super(context, attrs);
    register4clicks();
  }
  
  public RecordingListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    register4clicks();
  }
  
  private void register4clicks() {
    setOnItemClickListener(this);
    setOnItemLongClickListener(this);
  }
  
  public void refresh(Context c) {
    RecordingFile t;
    File[] datfiles;
    recordingList.clear();
    // find dat files
    t = new RecordingFile(c);
    datfiles = t.getDatDir().listFiles(new FilenameFilter() {
      public boolean accept(File dir, String name) {
        return (name.endsWith(RecordingFile.datExtension)); 
      }
    });
    // sort by date, descending
    Arrays.sort(datfiles, new Comparator<File>() {
        public int compare(File f1, File f2) {
            return Long.valueOf(f2.lastModified()).compareTo(f1.lastModified());
        }
    });
    // fill recording list with RecordingListItem objects
    for (int i=0; i<datfiles.length; i++) {
      t = new RecordingFile(c, datfiles[i].getName());
      recordingList.add(t);
    }
    // set adapter
    ArrayAdapter<RecordingFile> adapter = new ArrayAdapter<RecordingFile>(
        c, android.R.layout.simple_list_item_1 , recordingList);
    setAdapter(adapter);
  }
  
  @Override
  public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
    // determine png file name for the item that was clicked
    RecordingFile rf = (RecordingFile) parent.getAdapter().getItem(position);
    Intent recordingIntent = new Intent(getContext(), Activity_ShowRecording.class);
    recordingIntent.putExtra(RecordingFile.EXTRA_RECORDINGFILEOBJECT, rf);
    getContext().startActivity(recordingIntent);
  }
    
  @Override
  public boolean onItemLongClick(final AdapterView<?> parent, final View v, final int position, long id) {
        if (mActionMode != null) {
            return false;
        }
        
      final ActionMode.Callback mActionModeCallback = new ActionMode.Callback() {

          // Called when the action mode is created; startActionMode() was called
          @Override
          public boolean onCreateActionMode(ActionMode mode, Menu menu) {
              // Inflate a menu resource providing context menu items
              MenuInflater inflater = mode.getMenuInflater();
              inflater.inflate(R.menu.listview_item_context, menu);
              return true;
          }

          // Called each time the action mode is shown. Always called after onCreateActionMode, but
          // may be called multiple times if the mode is invalidated.
          @Override
          public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
              return false; // Return false if nothing is done
          }

          // Called when the user selects a contextual menu item
          @Override
          public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
              @SuppressWarnings("unchecked")
            ArrayAdapter<RecordingFile> a = (ArrayAdapter<RecordingFile>) parent.getAdapter();
              RecordingFile rf = (RecordingFile) a.getItem(position);
              switch (item.getItemId()) {
                  case R.id.item_delete:
                  //delete all the files and refresh the listview
                    rf.deleteFiles(true, true, true);
                    a.remove(rf);
                      mode.finish(); // Action picked, so close the CAB
                      return true;
                  case R.id.item_refresh:
                    // refresh png and csv file for the recording
                    rf.refreshFiles(true, true);
                      mode.finish(); // Action picked, so close the CAB
                      return true;
                  case R.id.item_view:
                    // view whole chart in external image viewer
                  String pngfn = rf.getPngFullPath();
                  File pngf = new File(pngfn);
                  //if png file doesn't exist, but dat file does, then recreate png
                  if ( (!pngf.exists()) && (new File(rf.getDatFullPath()).exists()) ) {
                    // regenerate png and csv from dat
                    rf.refreshFiles(true, true);
                  }
                  if ( pngf.exists() ) {
                    // create intent and show image using gallery
                    Intent photoIntent = new Intent(Intent.ACTION_VIEW);
                    photoIntent.setDataAndType(Uri.fromFile(new File(pngfn)),"image/*");
                    parent.getContext().startActivity(photoIntent);
                  }
                  // TODO is this OK?
                  mode.finish(); // Action picked, so close the CAB
                      return true;
                  default:
                      return false;
              }
          }

          // Called when the user exits the action mode
          @Override
          public void onDestroyActionMode(ActionMode mode) {
              mActionMode = null;
          }
      };

        // Start the CAB using the ActionMode.Callback defined above
        mActionMode = startActionMode(mActionModeCallback);
        v.setSelected(true);
        return true;
  }

}
Java Source Code List
