android.database.Cursor.close()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.close()方法的一些代码示例，展示了Cursor.close()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.close()方法的具体详情如下：
包路径：android.database.Cursor
类名称：Cursor
方法名：close

Cursor.close介绍

暂无

代码示例

代码示例来源：origin: stackoverflow.com

Cursor cursor = db.rawQuery(...);
try {
  while (cursor.moveToNext()) {
    ...
  }
} finally {
  cursor.close();
}

代码示例来源：origin: stackoverflow.com

public String getRealPathFromURI(Context context, Uri contentUri) {
 Cursor cursor = null;
 try { 
  String[] proj = { MediaStore.Images.Media.DATA };
  cursor = context.getContentResolver().query(contentUri,  proj, null, null, null);
  int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
  cursor.moveToFirst();
  return cursor.getString(column_index);
 } finally {
  if (cursor != null) {
   cursor.close();
  }
 }
}

代码示例来源：origin: stackoverflow.com

private String getNote(long contactId) { 
  String note = null; 
  String[] columns = new String[] { ContactsContract.CommonDataKinds.Note.NOTE }; 
  String where = ContactsContract.Data.RAW_CONTACT_ID + " = ? AND " + ContactsContract.Data.MIMETYPE + " = ?"; 
  String[] whereParameters = new String[]{Long.toString(contactId), ContactsContract.CommonDataKinds.Note.CONTENT_ITEM_TYPE}; 
  Cursor contacts = getContentResolver().query(ContactsContract.Data.CONTENT_URI, projection, where, whereParameters, null); 
  if (contacts.moveToFirst()) { 
   rv = contacts.getString(0); 
  } 
  contacts.close(); 
  return note; 
}

代码示例来源：origin: square/sqlbrite

@Override public String apply(Query query) {
  Cursor cursor = query.run();
  try {
   if (!cursor.moveToNext()) {
    throw new AssertionError("No rows");
   }
   return cursor.getString(0);
  } finally {
   cursor.close();
  }
 }
});

代码示例来源：origin: aa112901/remusic

public static Uri getAlbumUri(Context context, long musicId) {
  ContentResolver cr = context.getContentResolver();
  Cursor cursor = cr.query(Media.EXTERNAL_CONTENT_URI, proj_music, "_id =" + String.valueOf(musicId), null, null);
  long id = -3;
  if (cursor == null) {
    return null;
  }
  if (cursor.moveToFirst()) {
    id = cursor.getInt(cursor.getColumnIndex(Media.ALBUM_ID));
  }
  cursor.close();
  return getAlbumArtUri(id);
}

代码示例来源：origin: xinghongfei/LookLook

public boolean isRead(String table, String key, int value) {
  boolean isRead = false;
  Cursor cursor = mSQLiteDatabase.query(table, null, "key=?", new String[]{key}, null, null, null);
  if (cursor.moveToNext() && (cursor.getInt(cursor.getColumnIndex("is_read")) == value)) {
    isRead = true;
  }
  cursor.close();
  return isRead;
}

代码示例来源：origin: stackoverflow.com

Cursor mCount= db.rawQuery("select count(*) from users where uname='" + loginname + "' and pwd='" + loginpass +"'", null);
mCount.moveToFirst();
int count= mCount.getInt(0);
mCount.close();

代码示例来源：origin: greenrobot/greenDAO

/** Returns the count (number of results matching the query). Uses SELECT COUNT (*) sematics. */
public long count() {
  checkThread();
  Cursor cursor = dao.getDatabase().rawQuery(sql, parameters);
  try {
    if (!cursor.moveToNext()) {
      throw new DaoException("No result for count");
    } else if (!cursor.isLast()) {
      throw new DaoException("Unexpected row count: " + cursor.getCount());
    } else if (cursor.getColumnCount() != 1) {
      throw new DaoException("Unexpected column count: " + cursor.getColumnCount());
    }
    return cursor.getLong(0);
  } finally {
    cursor.close();
  }
}

代码示例来源：origin: naman14/Timber

public static final SortedCursor makeRecentTracksCursor(final Context context) {
  Cursor songs = RecentStore.getInstance(context).queryRecentIds(null);
  try {
    return makeSortedCursor(context, songs,
        songs.getColumnIndex(SongPlayCount.SongPlayCountColumns.ID));
  } finally {
    if (songs != null) {
      songs.close();
      songs = null;
    }
  }
}

代码示例来源：origin: stackoverflow.com

public String getRealPathFromURI(Uri contentUri) {
  String res = null;
  String[] proj = { MediaStore.Images.Media.DATA };
  Cursor cursor = getContentResolver().query(contentUri, proj, null, null, null);
  if(cursor.moveToFirst()){;
    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    res = cursor.getString(column_index);
  }
  cursor.close();
  return res;
}

代码示例来源：origin: bumptech/glide

@Nullable
private String getPath(@NonNull Uri uri) {
 final Cursor cursor = query.query(uri);
 try {
  if (cursor != null && cursor.moveToFirst()) {
   return cursor.getString(0);
  } else {
   return null;
  }
 } finally {
  if (cursor != null) {
   cursor.close();
  }
 }
}

代码示例来源：origin: greenrobot/greenDAO

public static String queryString(Database db, String sql) {
  Cursor cursor = db.rawQuery(sql, null);
  try {
    assertTrue(cursor.moveToNext());
    return cursor.getString(0);
  } finally {
    cursor.close();
  }
}

代码示例来源：origin: bumptech/glide

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 if (requestCode == REQUEST_CONTACT && resultCode == RESULT_OK) {
  Uri uri = Preconditions.checkNotNull(data.getData());
  final Cursor cursor = getContentResolver().query(uri, null, null, null, null);
  try {
   if (cursor != null && cursor.moveToFirst()) {
    final long contactId = cursor.getLong(cursor.getColumnIndex(Contacts._ID));
    showContact(contactId);
   }
  } finally {
   if (cursor != null) {
    cursor.close();
   }
  }
  return;
 }
 super.onActivityResult(requestCode, resultCode, data);
}

代码示例来源：origin: CarGuo/GSYVideoPlayer

@Override
public SourceInfo get(String url) {
  checkNotNull(url);
  Cursor cursor = null;
  try {
    cursor = getReadableDatabase().query(TABLE, ALL_COLUMNS, COLUMN_URL + "=?", new String[]{url}, null, null, null);
    return cursor == null || !cursor.moveToFirst() ? null : convert(cursor);
  } finally {
    if (cursor != null) {
      cursor.close();
    }
  }
}

代码示例来源：origin: lingochamp/FileDownloader

@Override
public FileDownloadModel find(final int id) {
  Cursor c = null;
  try {
    c = db.rawQuery(FileDownloadUtils.formatString("SELECT * FROM %s WHERE %s = ?",
        TABLE_NAME, FileDownloadModel.ID), new String[]{Integer.toString(id)});
    if (c.moveToNext()) return createFromCursor(c);
  } finally {
    if (c != null) c.close();
  }
  return null;
}

代码示例来源：origin: stackoverflow.com

protected void onActivityResult(int requestCode, int resultCode, 
    Intent imageReturnedIntent) {
  super.onActivityResult(requestCode, resultCode, imageReturnedIntent); 

  switch(requestCode) { 
  case REQ_CODE_PICK_IMAGE:
    if(resultCode == RESULT_OK){  
      Uri selectedImage = imageReturnedIntent.getData();
      String[] filePathColumn = {MediaStore.Images.Media.DATA};

      Cursor cursor = getContentResolver().query(
                selectedImage, filePathColumn, null, null, null);
      cursor.moveToFirst();

      int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
      String filePath = cursor.getString(columnIndex);
      cursor.close();

      Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
    }
  }
}

代码示例来源：origin: naman14/Timber

public static Album getAlbum(Cursor cursor) {
  Album album = new Album();
  if (cursor != null) {
    if (cursor.moveToFirst())
      album = new Album(cursor.getLong(0), cursor.getString(1), cursor.getString(2), cursor.getLong(3), cursor.getInt(4), cursor.getInt(5));
  }
  if (cursor != null)
    cursor.close();
  return album;
}

代码示例来源：origin: square/sqlbrite

public void isExhausted() {
  if (cursor.moveToNext()) {
   StringBuilder data = new StringBuilder();
   for (int i = 0; i < cursor.getColumnCount(); i++) {
    if (i > 0) data.append(", ");
    data.append(cursor.getString(i));
   }
   throw new AssertionError("Expected no more rows but was: " + data);
  }
  cursor.close();
 }
}

代码示例来源：origin: stackoverflow.com

DownloadManager mgr = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
long id = mgr.enqueue(request);

DownloadManager.Query q = new DownloadManager.Query();
q.setFilterById(id);
Cursor cursor = mgr.query(q);
cursor.moveToFirst();
int bytes_downloaded = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
cursor.close();

代码示例来源：origin: greenrobot/greenDAO

public void testExecuteSqlScript() throws IOException {
  DbUtils.executeSqlScript(getContext(), db, "minimal-entity.sql");
  Cursor cursor = db.rawQuery("SELECT count(*) from MINIMAL_ENTITY", null);
  try {
    cursor.moveToFirst();
    assertEquals(5, cursor.getInt(0));
  } finally {
    cursor.close();
  }
}

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