cursor

Access ordered images and video in same Cursor

由 人盡茶涼 提交于 2019-12-17 08:23:31
问题 I'm using the android.content.CursorLoader class to create two Cursor objects to access media stored on the user of my app's device. I'd like to give the user a grid view of their stored images and video which preserves order from the Android Gallery app. Currently I'm using one Cursor to access Images and one to access Video. With this approach, all images precede all videos (i.e. they are in two separate groups). Is there a way to access both Images and Video from the same Cursor ? If not,

What is use of Cursor in Android Development?

由 假装没事ソ 提交于 2019-12-17 08:12:13
问题 I was going through some of the codes on the internet regarding the database connection, retrieval. I saw Cursor cur1= moveToFirst() in many codes, I wanted to know what is the use of a cursor and why we use moveToFirst() as I am new to android. 回答1: Cursor is the Interface which represents a 2 dimensional table of any database. When you try to retrieve some data using SELECT statement, then the database will first create a CURSOR object and return its reference to you. The pointer of this

What is use of Cursor in Android Development?

由 天大地大妈咪最大 提交于 2019-12-17 08:11:44
问题 I was going through some of the codes on the internet regarding the database connection, retrieval. I saw Cursor cur1= moveToFirst() in many codes, I wanted to know what is the use of a cursor and why we use moveToFirst() as I am new to android. 回答1: Cursor is the Interface which represents a 2 dimensional table of any database. When you try to retrieve some data using SELECT statement, then the database will first create a CURSOR object and return its reference to you. The pointer of this

jQuery - Follow the cursor with a DIV

由 无人久伴 提交于 2019-12-17 06:24:07
问题 How can I use jQuery to follow the cursor with a DIV? 回答1: You can't follow the cursor with a DIV , but you can draw a DIV when moving the cursor! $(document).on('mousemove', function(e){ $('#your_div_id').css({ left: e.pageX, top: e.pageY }); }); That div must be off the float, so position: absolute should be set. 回答2: You don't need jQuery for this. Here's a simple working example: <!DOCTYPE html> <html> <head> <title>box-shadow-experiment</title> <style type="text/css"> #box-shadow-div{

Inserting text at cursor in a textarea, with Javascript

由 ﹥＞﹥吖頭↗ 提交于 2019-12-17 06:16:06
问题 I've had a look round the web for solutions, and there are some, but they all seem to split code into supporting IE and Firefox. I was wondering if there's a more elegant way which would work on every browser, to insert some text at the cursor in a textarea. Thanks very much, Rich 回答1: No, there isn't. IE has its TextRange objects to do the job. IE >= 9 and everything else for the last long time has selectionStart and selectionEnd properties on textareas and text inputs. This particular task

How to efficiently use MySQLDB SScursor?

由 北战南征 提交于 2019-12-17 05:54:57
问题 I have to deal with a large result set (could be hundreds thousands of rows, sometimes more). They unfortunately need to be retrieved all at once (on start up). I'm trying to do that by using as less memory as possible. By looking on SO I've found that using SSCursor might be what I'm looking for, but I still don't really know how to exactly use them. Is doing a fetchall() from a base cursor or a SScursor the same (in term of memory usage)? Can I 'stream' from the sscursor my rows one by one

How to efficiently use MySQLDB SScursor?

由 穿精又带淫゛_ 提交于 2019-12-17 05:54:01
问题 I have to deal with a large result set (could be hundreds thousands of rows, sometimes more). They unfortunately need to be retrieved all at once (on start up). I'm trying to do that by using as less memory as possible. By looking on SO I've found that using SSCursor might be what I'm looking for, but I still don't really know how to exactly use them. Is doing a fetchall() from a base cursor or a SScursor the same (in term of memory usage)? Can I 'stream' from the sscursor my rows one by one

Android SimpleCursorAdapter doesn't update when database changes

由 ＊爱你＆永不变心＊ 提交于 2019-12-17 05:41:21
问题 I have an Android ListActivity that is backed by a database Cursor through a SimpleCursorAdapter . When the items are clicked, a flag field in the coresponding row in the database is toggled and the view in the list needs to be updated. The problem is, when the view that's updated goes off screen and is recycled, the old value is displayed on the view when it returns into view. The same thing happens whenever thr list is redrawb (orientation changes, etc). I use notifydatasetchanged() to

Get all dates between two dates in SQL Server

由 杀马特。学长 韩版系。学妹 提交于 2019-12-17 04:30:14
问题 How to get the dates between two dates? I have a variable @MAXDATE which is storing the maximum date from the table. Now I want to get the all dates between @Maxdate and GETDATE() and want to store these date in a cursor. So far I have done as follows: ;with GetDates As ( select DATEADD(day,1,@maxDate) as TheDate UNION ALL select DATEADD(day,1, TheDate) from GetDates where TheDate < GETDATE() ) This is working perfectly but when I am trying to store these values in a cursor SET @DateCurSor

存储过程及游标使用

由 与世无争的帅哥 提交于 2019-12-17 03:01:30
存储过程及游标使用 实现test2表向test1表同步 create or replace procedure procedure_test as v_id armcp.test2.id%Type; v_c1 armcp.test2.c1%Type; cursor cursor_test2 is( select t2.id, t2.c1 from test2 t2); begin open cursor_test2; loop fetch cursor_test2 into v_id, v_c1; update test1 t1 set t1.c1 = v_c1 where t1.id = v_id; exit when cursor_test2%notfound; end loop; commit; close cursor_test2; end; 来源： https://www.cnblogs.com/BonnieWss/p/10910944.html
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