Android Open Source - FileManager Settings

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License

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

package com.ankur.core;
/*from   www .j a  va2s  . co  m*/
import java.util.LinkedList;
import java.util.List;

import com.ankur.coreutils.Bookmarks;

import android.app.ActionBar;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.Preference.OnPreferenceClickListener;
import android.view.Menu;
import android.view.MenuItem;

public class Settings extends PreferenceActivity implements
    OnSharedPreferenceChangeListener {

  public static final String PREFS_DISPLAYHIDDENFILES = "displayhiddenfiles";
  public static final String PREFS_PREVIEW = "showpreview";
  public static final String PREFS_SEARCH = "enablesearchsuggestions";
  public static final String PREFS_SORT = "sort";
  public static final String PREFS_VIEW = "viewmode";
  private static final int DIALOG_DELETE_BOOKMARKS = 1;
  private Cursor deleteBookmarksCursor;
  private List<Uri> bookmarksToDelete = new LinkedList<Uri>();

  @SuppressWarnings("deprecation")
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    ActionBar actionBar = getActionBar();
    actionBar.show();
    actionBar.setDisplayHomeAsUpEnabled(true);

    addPreferencesFromResource(R.xml.preferences);
    getPreferenceScreen().getSharedPreferences()
        .registerOnSharedPreferenceChangeListener(this);

    Preference editBookmarks = findPreference("editbookmarks");
    editBookmarks
        .setOnPreferenceClickListener(new OnPreferenceClickListener() {
          public boolean onPreferenceClick(Preference pref) {
            showDialog(DIALOG_DELETE_BOOKMARKS);
            return false;
          }
        });
  }

  @Override
  public void onBackPressed() {
    this.finish();
    Intent i = new Intent(getBaseContext(), Main.class);
    i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    startActivity(i);
    return;
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    return super.onCreateOptionsMenu(menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem menu) {
    switch (menu.getItemId()) {

    case android.R.id.home:
      this.finish();
      Intent i = new Intent(getBaseContext(), Main.class);
      i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
      startActivity(i);
      return true;
    }
    return false;
  }

  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
      String key) {
  }

  @SuppressWarnings("deprecation")
  @Override
  public Dialog onCreateDialog(int id) {
    switch (id) {
    case DIALOG_DELETE_BOOKMARKS:
      deleteBookmarksCursor = getBookmarksCursor();
      AlertDialog dialog = new AlertDialog.Builder(this)
          .setTitle(R.string.bookmark)
          .setMultiChoiceItems(deleteBookmarksCursor,
              Bookmarks.CHECKED, Bookmarks.NAME,
              new DialogInterface.OnMultiChoiceClickListener() {
                public void onClick(DialogInterface dialog,
                    int item, boolean checked) {
                  if (deleteBookmarksCursor
                      .moveToPosition(item)) {
                    Uri deleteUri = ContentUris
                        .withAppendedId(
                            Bookmarks.CONTENT_URI,
                            deleteBookmarksCursor
                                .getInt(deleteBookmarksCursor
                                    .getColumnIndex(Bookmarks._ID)));
                    if (checked)
                      bookmarksToDelete.add(deleteUri);
                    else
                      bookmarksToDelete.remove(deleteUri);

                    ((AlertDialog) dialog)
                        .getButton(
                            AlertDialog.BUTTON_POSITIVE)
                        .setEnabled(
                            (bookmarksToDelete
                                .size() > 0) ? true
                                : false);

                    ContentValues checkedValues = new ContentValues();
                    checkedValues.put(Bookmarks.CHECKED,
                        checked ? 1 : 0);
                    getContentResolver().update(deleteUri,
                        checkedValues, null, null);
                    deleteBookmarksCursor.requery();
                  }
                  ((AlertDialog) dialog).getListView()
                      .invalidate();
                }
              })
          .setPositiveButton(R.string.delete,
              new DialogInterface.OnClickListener() {

                public void onClick(DialogInterface dialog,
                    int which) {
                  for (Uri uri : bookmarksToDelete) {
                    getContentResolver().delete(uri, null,
                        null);
                  }
                  restartBookmarksChecked();
                }
              })
          .setNegativeButton(R.string.cancel,
              new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog,
                    int item) {
                  restartBookmarksChecked();
                }
              }).create();
      return dialog;
    }
    return super.onCreateDialog(id);
  }

  @SuppressWarnings("deprecation")
  private void restartBookmarksChecked() {
    ContentValues checkedValues = new ContentValues();
    checkedValues.put(Bookmarks.CHECKED, 0);
    getContentResolver().update(Bookmarks.CONTENT_URI, checkedValues, null,
        null);
    deleteBookmarksCursor.requery();
    bookmarksToDelete.clear();
  }

  @SuppressWarnings("deprecation")
  private Cursor getBookmarksCursor() {
    return managedQuery(Bookmarks.CONTENT_URI, new String[] {
        Bookmarks._ID, Bookmarks.NAME, Bookmarks.PATH,
        Bookmarks.CHECKED }, null, null, null);
  }
}
Java Source Code List
