Example usage for android.content ContentResolver delete

List of usage examples for android.content ContentResolver delete

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Introduction

In this page you can find the example usage for android.content ContentResolver delete.

Prototype

public final int delete(@RequiresPermission.Write @NonNull Uri url, @Nullable String where,
        @Nullable String[] selectionArgs)

Source Link

Document

Deletes row(s) specified by a content URI.

Usage

From source file:com.example.android.sunshine.sync.SunshineSyncTask.java

/**
 * Performs the network request for updated weather, parses the JSON from that request, and
 * inserts the new weather information into our ContentProvider. Will notify the user that new
 * weather has been loaded if the user hasn't been notified of the weather within the last day
 * AND they haven't disabled notifications in the preferences screen.
 *
 * @param context Used to access utility methods and the ContentResolver
 *///from w w  w  .ja  va2  s .co m
synchronized public static void syncWeather(Context context) {

    try {
        /*
         * The getUrl method will return the URL that we need to get the forecast JSON for the
         * weather. It will decide whether to create a URL based off of the latitude and
         * longitude or off of a simple location as a String.
         */
        URL weatherRequestUrl = NetworkUtils.getUrl(context);

        /* Use the URL to retrieve the JSON */
        String jsonWeatherResponse = NetworkUtils.getResponseFromHttpUrl(weatherRequestUrl);

        /* Parse the JSON into a list of weather values */
        ContentValues[] weatherValues = OpenWeatherJsonUtils.getWeatherContentValuesFromJson(context,
                jsonWeatherResponse);

        /*
         * In cases where our JSON contained an error code, getWeatherContentValuesFromJson
         * would have returned null. We need to check for those cases here to prevent any
         * NullPointerExceptions being thrown. We also have no reason to insert fresh data if
         * there isn't any to insert.
         */
        if (weatherValues != null && weatherValues.length != 0) {
            /* Get a handle on the ContentResolver to delete and insert data */
            ContentResolver sunshineContentResolver = context.getContentResolver();

            /* Delete old weather data because we don't need to keep multiple days' data */
            sunshineContentResolver.delete(WeatherContract.WeatherEntry.CONTENT_URI, null, null);

            /* Insert our new weather data into Sunshine's ContentProvider */
            sunshineContentResolver.bulkInsert(WeatherContract.WeatherEntry.CONTENT_URI, weatherValues);

            /*
             * Finally, after we insert data into the ContentProvider, determine whether or not
             * we should notify the user that the weather has been refreshed.
             */
            boolean notificationsEnabled = SunshinePreferences.areNotificationsEnabled(context);

            /*
             * If the last notification was shown was more than 1 day ago, we want to send
             * another notification to the user that the weather has been updated. Remember,
             * it's important that you shouldn't spam your users with notifications.
             */
            long timeSinceLastNotification = SunshinePreferences.getEllapsedTimeSinceLastNotification(context);

            boolean oneDayPassedSinceLastNotification = false;

            if (timeSinceLastNotification >= DateUtils.DAY_IN_MILLIS) {
                oneDayPassedSinceLastNotification = true;
            }

            /*
             * We only want to show the notification if the user wants them shown and we
             * haven't shown a notification in the past day.
             */
            if (notificationsEnabled && oneDayPassedSinceLastNotification) {
                NotificationUtils.notifyUserOfNewWeather(context);
            }

            /* If the code reaches this point, we have successfully performed our sync */

        }

    } catch (Exception e) {
        /* Server probably invalid */
        e.printStackTrace();
    }

    // Sync new weather data to Android Wear
    sendWearWeatherData(context);

}

From source file:com.rks.musicx.misc.utils.PlaylistHelper.java

/**
 * Delete playlist/*from ww w . j  a  v  a 2s .  c o m*/
 *
 * @param context
 * @param selectedplaylist
 */
public static void deletePlaylist(Context context, String selectedplaylist) {
    String playlistid = getPlayListId(context, selectedplaylist);
    ContentResolver resolver = context.getContentResolver();
    String where = MediaStore.Audio.Playlists._ID + "=?";
    String[] whereVal = { playlistid };
    resolver.delete(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI, where, whereVal);
}

From source file:info.guardianproject.otr.app.im.app.DatabaseUtils.java

/** Clear the branding resource map cache. */
private static int clearBrandingResourceMapCache(ContentResolver cr, long providerId) {
    StringBuilder where = new StringBuilder();
    where.append(Imps.BrandingResourceMapCache.PROVIDER_ID);
    where.append('=');
    where.append(providerId);//from  w  w w .ja  va2 s.c om
    return cr.delete(Imps.BrandingResourceMapCache.CONTENT_URI, where.toString(), null);
}

From source file:com.silentcorp.autotracker.db.VehicleDB.java

/**
 * Delete vehicles TODO better sql query
 * //from   www  . j a  va 2  s.c om
 * @param resolver
 * @param ids
 */
public static void deleteVehicles(Context context, Set<Long> ids) {
    StringBuilder sb = new StringBuilder();
    String[] args = new String[ids.size()];

    Iterator<Long> iter = ids.iterator();
    int index = 0;
    while (iter.hasNext()) {
        Long id = iter.next();
        args[index] = Long.toString(id);
        index++;

        sb.append(COL_ID);
        sb.append(" = ?");
        if (iter.hasNext()) {
            sb.append(" OR ");
        }
    }

    // delete a vehicles records
    ContentResolver contentResolver = context.getContentResolver();
    contentResolver.delete(DBContentProvider.VEHICLES_URI, sb.toString(), args);

    //delete related events
    EventDB.deleteEventsByVehicleIDs(context, ids);

    //delete related notifications
    NotificationDB.deleteNotificationsByVehiclesIds(context, ids);
}

From source file:Main.java

public static void DeleteImageFromGalleryBase(final Context context, String fileName) {

    // Set up the projection (we only need the ID)
    String[] projection = { MediaStore.Images.Media._ID };

    // Match on the file path
    String selection = MediaStore.Images.Media.DATA + " = ?";
    String[] selectionArgs = new String[] { fileName };

    // Query for the ID of the media matching the file path
    Uri queryUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
    ContentResolver contentResolver = context.getContentResolver();
    Cursor c = contentResolver.query(queryUri, projection, selection, selectionArgs, null);
    if (c.moveToFirst()) {
        // We found the ID. Deleting the item via the content provider will also remove the file
        long id = c.getLong(c.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
        Uri deleteUri = ContentUris.withAppendedId(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, id);
        contentResolver.delete(deleteUri, null, null);
    } else {//  w w w  .j  a v  a 2 s  .c  om
        // File not found in media store DB
    }
    c.close();
}

From source file:saphion.batterycaster.providers.Alarm.java

public static boolean deleteAlarm(ContentResolver contentResolver, long alarmId) {
    if (alarmId == INVALID_ID)
        return false;
    int deletedRows = contentResolver.delete(getUri(alarmId), "", null);
    return deletedRows == 1;
}

From source file:com.slownet5.pgprootexplorer.utils.FileUtils.java

public static void removeMediaStore(Context context, File file) {
    try {//from  ww w  .ja  v  a2s.  co m
        final ContentResolver resolver = context.getContentResolver();

        // Remove media store entries for any files inside this directory, using
        // path prefix match. Logic borrowed from MtpDatabase.
        if (file.isDirectory()) {
            final String path = file.getAbsolutePath() + "/";
            resolver.delete(FILE_URI, "_data LIKE ?1 AND lower(substr(_data,1,?2))=lower(?3)",
                    new String[] { path + "%", Integer.toString(path.length()), path });
        }

        // Remove media store entry for this exact file.
        final String path = file.getAbsolutePath();
        resolver.delete(FILE_URI, "_data LIKE ?1 AND lower(_data)=lower(?2)", new String[] { path, path });
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.example.android.ennis.barrett.popularmovies.asynchronous.TMDbSyncUtil.java

/**
 * Removes all data from themovies, thevideos, and thereviews tables.
 * @param context/*from   w w  w  . ja  v a  2  s  . c o  m*/
 */
public static void deleteFavorite(Context context, int movieId) {
    String[] whereArgs = new String[] { Integer.toString(movieId) };

    Log.e(TAG, "deleteFavorite");
    ContentResolver contentResolver = context.getContentResolver();
    int i = contentResolver.delete(TMDbContract.Movies.URI, TMDbContract.Movies.MOVIE_ID + " = ?", whereArgs);
    Log.e(TAG, "favorite movies deleted  " + i);

    contentResolver.delete(TMDbContract.Videos.URI, TMDbContract.Videos.MOVIE_IDS + " = ?", whereArgs);
    contentResolver.delete(TMDbContract.Reviews.URI, TMDbContract.Reviews.MOVIE_IDS + " = ?", whereArgs);
}

From source file:com.rks.musicx.misc.utils.PlaylistHelper.java

/**
 * Delete Playlist Track/*from  w w  w .  ja  va 2  s  .c  o m*/
 *
 * @param context
 * @param playlistId
 * @param audioId
 */
public static void deletePlaylistTrack(Context context, long playlistId, long audioId) {
    ContentResolver resolver = context.getContentResolver();
    Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId);
    String filter = MediaStore.Audio.Playlists.Members.AUDIO_ID + " = " + audioId;
    resolver.delete(uri, filter, null);
}

From source file:org.voidsink.anewjkuapp.calendar.CalendarUtils.java

public static boolean removeCalendar(Context context, String name) {
    Account account = AppUtils.getAccount(context);
    if (account == null) {
        return true;
    }//from  w  w w .j ava2  s  . c o  m

    String id = getCalIDByName(context, account, name, false);
    if (id == null) {
        return true;
    }

    final ContentResolver resolver = context.getContentResolver();

    resolver.delete(
            KusssAuthenticator.asCalendarSyncAdapter(CalendarContractWrapper.Calendars.CONTENT_URI(),
                    account.name, account.type),
            CalendarContractWrapper.Calendars._ID() + "=?", new String[] { id });

    Log.i(TAG, String.format("calendar %s (id=%s) removed", name, id));

    return true;
}