android.database.Cursor.isClosed()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中android.database.Cursor.isClosed()方法的一些代码示例，展示了Cursor.isClosed()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Cursor.isClosed()方法的具体详情如下：
包路径：android.database.Cursor
类名称：Cursor
方法名：isClosed

Cursor.isClosed介绍

暂无

代码示例

代码示例来源：origin: leolin310148/ShortcutBadger

public static void close(Cursor cursor) {
  if (cursor != null && !cursor.isClosed()) {
    cursor.close();
  }
}

代码示例来源：origin: yanzhenjie/NoHttp

/**
 * Close the database when writing data.
 *
 * @param cursor {@link Cursor}.
 */
protected final void closeCursor(Cursor cursor) {
  if (cursor != null && !cursor.isClosed()) {
    cursor.close();
  }
}

代码示例来源：origin: ankidroid/Anki-Android

public void close() {
    if (cur != null && !cur.isClosed())
      cur.close();
  }
}

代码示例来源：origin: stackoverflow.com

public int getRecordsCount() {
  int count = 0;
  String countQuery = "SELECT  * FROM " + TABLE_LOGIN;

  SQLiteDatabase db = this.getReadableDatabase();
  Cursor cursor = db.rawQuery(countQuery, null);


  if(cursor != null && !cursor.isClosed()){
    count = cursor.getCount();
    cursor.close();
  }   
  return count;
}

代码示例来源：origin: jeasonlzy/okhttp-OkGo

protected final void closeDatabase(SQLiteDatabase database, Cursor cursor) {
  if (cursor != null && !cursor.isClosed()) cursor.close();
  if (database != null && database.isOpen()) database.close();
}

代码示例来源：origin: stackoverflow.com

public static String getContactName(Context context, String phoneNumber) {
  ContentResolver cr = context.getContentResolver();
  Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber));
  Cursor cursor = cr.query(uri, new String[]{PhoneLookup.DISPLAY_NAME}, null, null, null);
  if (cursor == null) {
    return null;
  }
  String contactName = null;
  if(cursor.moveToFirst()) {
    contactName = cursor.getString(cursor.getColumnIndex(PhoneLookup.DISPLAY_NAME));
  }

  if(cursor != null && !cursor.isClosed()) {
    cursor.close();
  }

  return contactName;
}

代码示例来源：origin: stackoverflow.com

public Bitmap getImage(int i){

  String qu = "select img  from table where feedid=" + i ;
  Cursor cur = db.rawQuery(qu, null);

  if (cur.moveToFirst()){
    byte[] imgByte = cur.getBlob(0);
    cur.close();
    return BitmapFactory.decodeByteArray(imgByte, 0, imgByte.length);
  }
  if (cur != null && !cur.isClosed()) {
    cur.close();
  }       

  return null ;
}

代码示例来源：origin: stackoverflow.com

public Account getCurrentAccount() {
  SQLiteDatabase db       =   dbHelper.getWritableDatabase();
  String sql              =   "SELECT * FROM ACCOUNTS";
  Cursor cursor           =   db.rawQuery(sql, new String[] {});

  if(cursor.moveToFirst()){
    this.accId             = cursor.getInt(0);
    this.accName           = cursor.getString(1);
    this.accImage          = cursor.getBlob(2);
  }
  if (cursor != null && !cursor.isClosed()) {
    cursor.close();
  }
  db.close();
  if(cursor.getCount() == 0){
    return null;
  } else {
    return this;
  }
}

代码示例来源：origin: ankidroid/Anki-Android

public ArrayList<Object[]> _qaData(String where) {
  ArrayList<Object[]> data = new ArrayList<>();
  Cursor cur = null;
  try {
    cur = mDb.getDatabase().query(
        "SELECT c.id, n.id, n.mid, c.did, c.ord, "
            + "n.tags, n.flds FROM cards c, notes n WHERE c.nid == n.id " + where, null);
    while (cur.moveToNext()) {
      data.add(new Object[] { cur.getLong(0), cur.getLong(1), cur.getLong(2), cur.getLong(3), cur.getInt(4),
          cur.getString(5), cur.getString(6) });
    }
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
  return data;
}

代码示例来源：origin: stackoverflow.com

if (oldCursor != null && oldCursor != cursor && !oldCursor.isClosed()) {
  oldCursor.close();
if (mCursor != null && !mCursor.isClosed()) {
  mCursor.close();

代码示例来源：origin: ankidroid/Anki-Android

/**
 * Field checksums and sorting fields ***************************************
 * ********************************************************
 */
private ArrayList<Object[]> _fieldData(String snids) {
  ArrayList<Object[]> result = new ArrayList<>();
  Cursor cur = null;
  try {
    cur = mDb.getDatabase().query("SELECT id, mid, flds FROM notes WHERE id IN " + snids, null);
    while (cur.moveToNext()) {
      result.add(new Object[] { cur.getLong(0), cur.getLong(1), cur.getString(2) });
    }
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
  return result;
}

代码示例来源：origin: ankidroid/Anki-Android

public TodayStats(SupportSQLiteDatabase db, long dayStartCutoff) {
  Cursor cur = null;
  String query = "select cards.did, "+
      "sum(case when revlog.type = 0 then 1 else 0 end)"+ /* learning */
      " from revlog, cards where revlog.cid = cards.id and revlog.id > " + dayStartCutoff +
      " group by cards.did";
  Timber.d("AdvancedStatistics.TodayStats query: %s", query);
  try {
    cur = db.query(query, null);
    while(cur.moveToNext()) {
      nLearnedPerDeckId.put(cur.getLong(0), cur.getInt(1));
    }
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
}

代码示例来源：origin: ankidroid/Anki-Android

public static int getNotificationStatus(Context context) {
  openDBIfClosed(context);
  Cursor cursor = null;
  int due = 0;
  try {
    cursor = mMetaDb.query("smallWidgetStatus", new String[] { "due" }, null, null, null, null, null);
    if (cursor.moveToFirst()) {
      return cursor.getInt(0);
    }
  } catch (SQLiteException e) {
    Timber.e(e, "Error while querying widgetStatus");
  } finally {
    if (cursor != null && !cursor.isClosed()) {
      cursor.close();
    }
  }
  return due;
}

代码示例来源：origin: ankidroid/Anki-Android

public String emptyCardReport(List<Long> cids) {
  StringBuilder rep = new StringBuilder();
  Cursor cur = null;
  try {
    cur = mDb.getDatabase().query("select group_concat(ord+1), count(), flds from cards c, notes n "
                    + "where c.nid = n.id and c.id in " + Utils.ids2str(cids) + " group by nid", null);
    while (cur.moveToNext()) {
      String ords = cur.getString(0);
      //int cnt = cur.getInt(1);  // present but unused upstream as well
      String flds = cur.getString(2);
      rep.append(String.format("Empty card numbers: %s\nFields: %s\n\n", ords, flds.replace("\u001F", " / ")));
    }
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
  return rep.toString();
}

代码示例来源：origin: stackoverflow.com

} while (cur.moveToNext());  
if (!cur.isClosed()) {  
  cur.close();  
  cur = null;

代码示例来源：origin: ankidroid/Anki-Android

/**
 * Return the current status of the widget.
 * 
 * @return [due, eta]
 */
public static int[] getWidgetSmallStatus(Context context) {
  openDBIfClosed(context);
  Cursor cursor = null;
  try {
    cursor = mMetaDb.query("smallWidgetStatus", new String[] { "due", "eta" },
        null, null, null, null, null);
    while (cursor.moveToNext()) {
      return new int[]{cursor.getInt(0), cursor.getInt(1)};
    }
  } catch (SQLiteException e) {
    Timber.e(e, "Error while querying widgetStatus");
  } finally {
    if (cursor != null && !cursor.isClosed()) {
      cursor.close();
    }
  }
  return new int[]{0, 0};
}

代码示例来源：origin: ankidroid/Anki-Android

if (cur != null && !cur.isClosed()) {
  cur.close();

代码示例来源：origin: ankidroid/Anki-Android

/**
 * Returns the state of the whiteboard for the given deck.
 * 
 * @return 1 if the whiteboard should be shown, 0 otherwise
 */
public static boolean getWhiteboardState(Context context, long did) {
  openDBIfClosed(context);
  Cursor cur = null;
  try {
    cur = mMetaDb.rawQuery("SELECT state FROM whiteboardState" + " WHERE did = " + did, null);
    if (cur.moveToNext()) {
      return cur.getInt(0) > 0;
    } else {
      return false;
    }
  } catch (Exception e) {
    Timber.e(e, "Error retrieving whiteboard state from MetaDB ");
    return false;
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
}

代码示例来源：origin: ankidroid/Anki-Android

/**
 * Returns a custom dictionary associated to a deck
 * 
 * @return integer number of dictionary, -1 if not set (standard dictionary will be used)
 */
public static int getLookupDictionary(Context context, long did) {
  openDBIfClosed(context);
  Cursor cur = null;
  try {
    cur = mMetaDb.rawQuery("SELECT dictionary FROM customDictionary" + " WHERE did = " + did, null);
    if (cur.moveToNext()) {
      return cur.getInt(0);
    } else {
      return -1;
    }
  } catch (Exception e) {
    Timber.e(e, "Error retrieving custom dictionary from MetaDB ");
    return -1;
  } finally {
    if (cur != null && !cur.isClosed()) {
      cur.close();
    }
  }
}

代码示例来源：origin: stackoverflow.com

c.close();
      .getColumnIndex(PhoneLookup.DISPLAY_NAME));
if (cursor != null && !cursor.isClosed()) {
  cursor.close();

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