Android :: Row ID From A Cursor
May 17, 2010How do I get the row ID from a Cursor?
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Android :: Moving Cursor Adapter Cursor Creation To Background Thread
Mar 29, 2010The structure of some of my activities is a simple ListView with a custom CursorAdapter. The cursor is created in onCreate() on the activity from a SQLite database. The problem is that querying the SQLite database can be quite slow at times with lots of data (and let's assume I've already optimized the sql query as much as possible). Because it occurs in onCreate() on the UI thread, I get ugly black screens when opening the activity, which sometimes turn into ANRs, on a slow phone like the G1. I want to load the cursor in a background and show "Loading.." on screen while doing so. I saw AsyncQueryHandler used extensively in the framework, but this seems a solution geared more towards Content Providers and not application-local SQLite databases. I then thought of trying to load the cursor in a background thread, but realize that this might be problematic, as the CursorAdapter should be instantiated in onCreate() and should take a cursor as a parameter. The latest thought I had was to instantiate an empty MatrixCursor in onCreate() and pass that to the cursor adapter, while kicking off a thread/TimerTask to query the database. Then, on database cursor load, call cursorAdapter.change Cursor to the properly filled cursor. This doesn't seem very elegant and seems quite wasteful, however.
View 10 Replies View RelatedAndroid :: Join ContentResolver Cursor With A Database Cursor
Mar 21, 2010I get records from the system by quering a ContentResolver. I maintain the order of the items in the database. So I want to display the items in the order taken from my database.
How do I merge these two informations?
I am looking after an alternative way now. As what I ideally want is:
Get order of contacts by a custom order held in my database (this involves joining CR with my DB cursor, and doing an order by, later seams it's not possible with CursorJoiner) but there is more, if the join is not unique I want to sort by contact's name as last measure
Which is impossible using Cursor and Joiners, because of the missing feature of order bys, also I need to return a Cursor, as I will be using the in an ExpandableList
Also this translated to TSQL it would look like
select * from contactsdata
left join category on contactsdata.catid=category.id
order by category.pos asc, contact.display_name asc
So I am looking now after an alternative. I have in mind to load in a temporary DB table all data from CR, then do the query on the temporary table where I can join tables and do order bys? How does this sound to you?
Android :: Finalizing Cursor Android.database.sqlite.SQLiteCursor
May 6, 2009I am seeing the exception in 'adb logcat'.But I don't know if it is caused by my application or android platform.Can you please give me any idea how to troubleshoot this exception?
View 3 Replies View RelatedAndroid :: DB Cursor Not Working
Oct 18, 2009I've got this piece of code where I count words in a dictionary and then I try to query them:
CODE:.............
The SELECT_BY_LENGTH is defined this way: private static final String SELECT_BY_LENGTH = "select word._id, word.word from word where length(word.word) between ? and ? ";
And the count works perfectly but the cursor.move(1) always returns false. I've tried to get the column count and responds with the correct count and the column names map too. I mean that the method getColumnIndex works too but I can't get any data from the cursor. All such methods fail. Am I doin' something wrong? I'm using android 1.5.
Android :: Update A Cursor
Apr 24, 2009I call ContentResolver's query method to get a Cursor, and I would like to update the title of that row to 'new title' how to do it?
CODE:...................
Android :: Cursor And RowId
May 17, 2010How do get the row ID from a Cursor?
View 5 Replies View RelatedAndroid :: Get URL From Cursor Object
Jun 16, 2009I have a Cursor points to a Contact. How can I get an url built from that Cursor?
I need to know that because from here: http://developer.android.com/guide/topics/providers/content-providers.html
I need to have an url so that I can build a phone uri, like this: phoneUri = Uri.withAppendedPath(uri, People.Phones.CONTENT_DIRECTORY);
and I can query all the phone numbers for that contact.
Android :: How To I Make A New Cursor From First Two?
Jun 25, 2009I have two tables I want to (inner) join, Contacts.People and Contacts.ContactMethods. The result will be displayed in a ListActivity. After looking into this, it appears that I should use CursorJoiner. So the code would look something like this: So my question is, how to I make a new cursor from the first two?
View 2 Replies View RelatedAndroid :: SQL Cursor And GROUP BY?
Nov 19, 2010I have a query that is making use of GROUP BY so that the results are grouped by a date column. My question is this:
When I move through the cursor to get the results of the query, how can I get the multiple items associated with each group into my vector? For example, I want to get BOTH "Item X" and "Item Y" for October 16, 2010. Currently, I get them each separately.
Here is my code:
CODE:..........
So, when I get the results from my Vector, I will get:
October 12, 2010
- Item X
October 12, 2010
- Item Y
And I want:
October 12, 2010 - Item X, Item Y
Yes, I do have to change my Vector to support multiple items, but hopefully you get what issue I'm facing...
Android :: Cursor - Get The Field Value
May 24, 2009I have problems with Cursor in my Android application.
I have a SQLiteDatabase that return me Cursor when I try to fetch the values with :
code:.......
But I don't know how to obtain the value of the field in the Cursor.
If I do that :
code:........
I obtain the name of the columns (_id, title, body) but not the value.
Android :: How To Return Typeface From Cursor?
Oct 30, 2009I want to make a content provider for font file. But I can not find any way to return a Typeface from Cursor. According to SDK reference, Matrix Cursor sounds like a solution, but it doesn't support any object except String,Long,Double,Short,Flow.
View 4 Replies View RelatedAndroid :: Simplecursoradapter - Close Cursor
Jul 19, 2010If I pass a cursor to a simplecursoradapter, do I still need to close the cursor? if so when: after I pass it to the adapter or when the adapter is finished?
View 2 Replies View RelatedAndroid :: AVD Cursor - Windows Default
Nov 10, 2010When i use the AVD to test my apps the cursor in the avd window changes from the windows default cursor to a custom black cursor. I would like to use the windows default.
View 5 Replies View RelatedAndroid :: Customised Sorting On Cursor
Sep 7, 2009I want to do customised sorting on cursor which is returned after query is done. Is it possible to do? Is there any way to do updates on Cursor?
View 7 Replies View RelatedAndroid :: Sharing Cursor Between Activities
Nov 21, 2010I think the following scenario is common, but I can't figure the way to implement it:
We have three Activities, and one database. We ask the user for an input to search in the database. The query should get none, one or may results.
If you get none you simple inform the user.
If you get only one, you show it in a new activity with the right view.
If you get many you show them in a list to let the user to chose the right one and then you pass that to the activity which with show the data in the case of one result only.
The problem is that, in order to know the number of results, you need to do the query (and get the cursor) in the first activity. And in the case you get more than one result you need to send the data (pass the cursor?)to the list acitivty. Doing the query again in the list activity can't be right, right?
I'm aware that you can share cursors by using a content provider, but as the activities are from the same application and the data is private (useless outside), don't see the point of making it avaliable to anyone else.
I read here around that you can crate a parcelable cursor and send it in bundle, but I'm not sure if that is the right use.
Android :: An App To Display Cursor Position
May 29, 2009I am new in Android application programming.I need to develop an android application which simply displays the cursor position (co ordinates) very urgently.If any has some pointers in same would be a great help to me.
View 4 Replies View RelatedAndroid :: Cursor Position At The End Of Text
Aug 26, 2009When i try to edit and already stored notepad ,i see the cursor at the end of first line.I want to make it appear to the end of the text.Please help me in this.
View 2 Replies View RelatedAndroid :: How To Input Cursor Position On Tap?
Feb 18, 2010I want to read my cursor position so that, after a tap, I can convert the screen x,y coordinates to a Geopoint for distance calculations.I found a snippet to convert x,y coordinates to a Geopoint and probably could use Projection instead, but how do I input those screen x,y values in the first place? This is probably straightforward, but I'm confused.The class Cursor seems to be something different than what I need
View 2 Replies View RelatedAndroid :: EditText's Cursor Position
Aug 10, 2010User wrote some text in EditText, then touched it somewhere in its field. Cursor position changed.I need to determine changed cursor position, and do some code. How can I do this?
View 1 Replies View RelatedAndroid :: Moving Cursor Position To A Certain ID
Sep 23, 2010My user can flick through a set of records.I save the last seen record _ID in Preferences, so that they can start off from where they left when they access the application next time.The cursor that I have extracts _ID field too.However, I don't know how to move cursor to that particular row.The following functions of the cursor need a specific position to go to :- The _ID may not be sequential (due to deletes etc).Any way to do this?
View 1 Replies View RelatedAndroid :: Cursor Position In The EditText
Jul 15, 2009I was going through the notepad tutorials.the cursor was placed in the middle of edit text.i tried to make the cursor to point in the first line as shown in the pic but not able to find the solution for it.Kindly look at the pic and give favorable reply.
View 4 Replies View RelatedAndroid :: Cursor Not Highlighting Buttons
Aug 27, 2010I'm trying to customize my buttons in my view a bit and give them my own look. Whenever I set a picture as a background so that the button looks different though, I seem to lose my cursor. I can use my trackball to go through the items still but when I come to one of my custom buttons the cursor does not show. I have the same problem with some TextViews that I made clickable.
View 1 Replies View RelatedAndroid :: Set Cursor Visible In TextView
Apr 9, 2009In the android reference site, it is written in the serCursorVisible section that cursor is visible by default and you can give its value as either "true or "false" to change the its visibility on the GUI screen. But in my case , cursor is remaining invisible irrespective of setting the visibility "true" or "false" using android:cursor Visible = "true" in the layout/main.xml. Should I do something more to make cursor visible on the GUI screen or its a bug in android?
View 4 Replies View RelatedAndroid :: Inserting Data Into Cursor?
Jun 23, 2009I'm looking for a way to insert data into a cursor that is separate from the SQL database it retrieves the rest of the information from. Is there any way to to this, or is there a different way to add more information to a list view item? What I'm trying to do is to use a date column for each entry in the list to calculate the number of days until that date (and then put that number in the list item). I know how to get the value, but I just cant find a way to put it into the list without it being in the cursor.
View 7 Replies View RelatedAndroid :: An IF Statement In A Cursor Adapter?
Jul 15, 2010CODE:...........................
View 1 Replies View RelatedAndroid :: Possible To Pass Cursor To An Activity?
Oct 16, 2010Is this possible? I am trying to open a SQLite database cursor in one activity, and pass it to another activity.
View 2 Replies View RelatedAndroid :: Always Close() Cursor Explicitly?
Jul 2, 2009If I don't close() a cursor explicitly, relying on gc instead, may it, theoretically, cause any problems?
View 2 Replies View RelatedAndroid :: SQLite And Cursor Leak On AutoComplete
Oct 20, 2010In my activity, I have an AutoCompleteTextView that gets its contents from my custom adapter. I created my adapter by following this example.The adapter works so far, but I am getting so many errors on leaks and cursors that are not finalized.My question is: how do I close the db in runQueryOnBackgroundThread?
View 1 Replies View RelatedAndroid :: Using Cursor With SetMultiChoiceItems In Alert Dialog
Aug 30, 2010I want to display a multichoice list in an alert dialog box. If I'm using an array to store the list of items, then it is working fine :
d.setMultiChoiceItems(R.array.items,
new boolean[]{false, true, false, true, false, false, false},
new DialogInterface.OnMultiChoiceClickListener() {
public void onClick(DialogInterface dialog, int whichButton,
boolean isChecked) {
/* User clicked on a check box do some stuff */
}
})
But in my case, the item list is dynamic, which I'm geting from a database. The database keeps on updating its contents and hence the list is also updating at a fixed interval of time. So, instead of using an array I would like to use a cursor in the argument of setMultiChoiceItems.