cursor

问题 I'm in the progress of developing an Android app for displaying a number of RSS feeds (yes, I know there are many apps like this already). The data to be displayed is backed by a content provider, and I want to be backward compatible with API level 4. I'm using an ExpandableListView to display the content of three different RSS feeds. The ExpandableListView 's adapter is implemented as a sub-class of SimpleCursorTreeAdapter : private class RssFeedLatestListAdapter extends

问题 Is there any benefit to closing a cursor when using Python's sqlite3 module? Or is it just an artifact of the DB API v2.0 that might only do something useful for other databases? It makes sense that connection.close() releases resources; however, it is unclear what cursor.close() actually does, whether it actually releases some resource or does nothing. The docs for it are unenlightening: >>> import sqlite3 >>> conn = sqlite3.connect(':memory:') >>> c = conn.cursor() >>> help(c.close) Help on

问题 I have 4 textboxes and a submit button in my webpage Suppose the user enters data in 2 fields and then clicks the submit button. I now want to know in which textbox the cursor was located just before the submit button was clicked. Any Idea on how to do this in javascript..?? 回答1: Your question does specifically say in javascript , but FWIW here is another option in jQuery: Working jsFiddle here HTML: <input id="in1" type="text" /><br /> <input id="in2" type="text" /><br /> <input id="in3"

问题 I am in the process of moving our database over to Oracle from SQL Server 2008 but cannot get MyBatis to work. Given the following example: UserMapper.xml (example) <resultMap type="User" id="UserResult"> <id property="userId" column="userId"/> <result property="firstName" column="firstName"/> <result property="lastName" column="lastName"/> </resultMap> <select id="getUsers" statementType="CALLABLE" resultMap="UserResult"> {CALL GetUsers()} </select> UserDAO.java public interface UserDAO {

问题 I have a view that contains a ListView which is binded to a cursor adapter. When The cursor content change I want to keep the ListView at the top then in my custom cursor adapter I added : @Override protected void onContentChanged() { // ... myListView.scrollTo(0, 0); } but this doesn't work. Then I read somewhere to queue this action like this : myListView.post(new Runnable() { public void run() { myListView.scrollTo(0, 0); } }); but this doesn't work either. How can I keep the ListView at

问题 Im developing a touchscreen app and I need to hide the cursor whenever it is within the main Form. Any ideas? 回答1: I knew this was a stupid question! Simply put Cursor.Hide(); is all I needed in the forms constructor. 来源： https://stackoverflow.com/questions/457360/c-sharp-how-can-i-hide-the-cursor-in-a-winforms-app

问题 I am going to implement the method to retrieve the record of the strings but when it comes to the execution , it turns Runtime Error as the Log cat stated. Would you please tell us how in correctly initialise the cursor ? Logcat 07-08 10:10:34.620: D/result(8036): true 07-08 10:10:34.660: D/memalloc(8036): ion: Unmapping buffer base:0x57c06000 size:466944 07-08 10:10:34.660: D/memalloc(8036): ion: Unmapping buffer base:0x57d6c000 size:466944 07-08 10:10:34.660: D/memalloc(8036): ion:

问题 I want to implement pagination for my website using the Cursor feature of GAE (Java). However, there is only a forward cursor ; backward cursors are not implemented as of App Engine SDK 1.4.0. So, to implement a previous page functionality, it is suggested that I store the cursor page wise in memchache. But my question is - when new record gets added into the datastore, the old cursors for respective pages would become invalid. How do I handle such situations? Is there anyone who has already

问题 In Honeycomb the Loader APIs were introduced as the proper way to provide data to an application by doing the heavy lifting on a background thread. In my application I'm working to replace all my Cursor s with Loader s that return Cursor s. Since Cursor.requery() is depreciated now, it is recommended to just call restartLoader and allow the work to again be done on a background thread and then changeCursor when it returns in onLoadFinished . All of this works wonderfully except that the

问题 I get a String data from Cursor, but I don't know how to convert it to Array. How can I do that? String[] mString; for(cursor.moveToFirst(); cursor.moveToNext(); cursor.isAfterLast()) { mTitleRaw = cursor.getString(cursor.getColumnIndex(SBooksDbAdapter.KEY_TITLE_RAW)); } mString = mTitleRaw ???? 回答1: You could just wrap mTitleRaw into a single element array like so: mString = new String[] { mTitleRaw }; Update: What you probably want is to add all the rows to a single array, which you can do