DaisyBookFinder.java :  » UnTagged » android-daisy-epub-reader » com » ader » Android Open Source

package com.ader;

/**
 * DaisyBookFinder automatically searches for suitable books on the sdcard.
 * 
 * This is a first cut of the implementation as it's slow, uncommunicative,
 * and calls BookValidator that currently assumes the books are in /sdcard/ on
 * the device.
 */
import java.io.File;
import java.util.ArrayList;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.ader.io.BookValidator;

public class DaisyBookFinder extends ListActivity {
  private ArrayList<String> books;
  BookValidator validator;
  private static final String TAG = "DaisyBookFinder";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
        Util.logInfo(TAG, "onCreate");
        setContentView(R.layout.results_list);
                
        validator = new BookValidator();
        String rootfolder = Preferences.getRootfolder(getBaseContext());
    Util.logInfo(TAG, "The root folder to search is: " + rootfolder);
        validator.findBooks(rootfolder);
        books = validator.getBookList();
        PopulateList();
  }
  
  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    String item = books.get(position);
    
    Intent i = new Intent(this, DaisyReader.class);
    i.putExtra("daisyPath", item + "/");
    i.putExtra("daisyNccFile", DaisyBookUtils.getNccFileName(new File(item)));
    startActivity(i);
    return;
  }
  
  void PopulateList() {
    // TODO(jharty): Check if currentDirectory maps to ExternalStorageDirectory
    Util.logInfo(TAG, "External Storage is: " + Environment.getExternalStorageDirectory());
    // TODO(jharty): remove this hack once I've debugged the interaction
    // It probably needs to move to a more general FileIO class that'd be
    // used by the rest of the application. That way we can reduce
    // duplication of code e.g. with DaisyBrowser and make the 
    // application more robust against events such as the sdcard becoming
    // unavailable while the application is in use.
    String storagestate = Environment.getExternalStorageState();

    if (!storagestate.equals(Environment.MEDIA_MOUNTED) ) {
      AlertDialog alertDialog = new AlertDialog.Builder(this).create();
      alertDialog.setTitle(R.string.sdcard_title);
      alertDialog.setMessage(getString(R.string.sdcard_mounted));
      alertDialog.setButton(getString(R.string.close_instructions), 
          new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {
          finish();
          return;
        } });
      alertDialog.show();  
    }

    // TODO (jharty): format the list of books more attractively.
    setListAdapter(new ArrayAdapter<String>(this, R.layout.listrow, R.id.textview, books));
    getListView().setTextFilterEnabled(true);
  }
}