Android :: Run SQL Functions On A ContentResolver Columns Query?
Mar 22, 2010
I am wondering if Android's ContentResolver supports using SQL functions over the columns when you query a ContentProvider. Such as SQLite3 date functions, to get a specific date format, or datediff?
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Jul 16, 2009
CODE:....
Why the contactsCursor is null? The number is in the contacts. Is there any mistakks in the query?
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Sep 29, 2010
I want to run this query in Android Application :
code:.......
My DB schema
code:..........
Here is the function -
code:...........
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Oct 21, 2009
I want to be able to query a ContentProvider from a Service, so my understanding is I will need to use a ContentResolver. What I can't seem to find is how do I get a Context that I can use to create the ContentResolver with?
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Nov 12, 2009
for some reason i would be executing a raw query or at least a query with group by clause and having clause to the table calls from database contacts.db.Adding the group by clause and the having clause to the where clause will result in exception.Open the database(/data/ data/ com.android.providers.contacts/databases/contacts.db) with SQLiteDatabase. open Database()also throws an exeception.
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Feb 17, 2010
I'm trying this code and it's getting stopped in the getContentResolver statement....
CODE:.........
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Feb 9, 2010
The goal: refresh database from XML data
The process:
Start transaction
Delete all existing rows from the tables
Per each main element of parsed XML insert row into main table and get PK
Per each child of the main element insert record into 2nd table providing FK from the previous step
Commit transaction
Pretty standard stuff as far as db operations. The problem is that CRUD operations are not done within ContentProvider but rather using ContentResolver so the insert for example looks like resolver.insert(CONTENT_URI, contentValues). The ContentResolver API doesn't seem to have anything pertained to transaction and I cannot use bulkInsert since I'm inserting in 2 tables intermittently (plus I want to have delete inside the transaction as well).
I was thinking of registering my customized ContentProvider as listener by using registerContentObserver but since ContentResolver#acquireProvider methods are hidden how do I obtain the right reference?
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Feb 22, 2010
What would be a sensible way to add DISTINCT and/or GROUPBY to ContentResolver- based queries. Right now I have to create custom URI for each special case. Is there a better way?
(I still program for 1.5 as lowest common denominator)
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Feb 27, 2010
You can delete with content resolver by URI or by passing some parameters to the where parameter.
How do you make the parameters to be SQL Injection Safe?
Is it possible to use Prepared Statements with ContentResolver?
act.getContentResolver().delete(myuriwithid,null,null);
act.getContentResolver().delete(mybaseuri," name = '"+this.name"'",null);
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Sep 17, 2010
I know that after downloading an mp3 from your app you need to add it to the ContentResolver to see it on the music player. I am doing it with the following code...
My issue is that I am willing to avoid setting DISPLAY_NAME, ARTIST, ALBUM, TITLE by hand.
Is there a way to tell Android to do it from the file? I've already used just values.put(Media.DATA, pathToFile); but it's not adding it to the player.
Is there a way to force the thread that scans the sd for music?
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Sep 19, 2010
When i access the phone book,i change the peoleo of the book,or delete the peoploe of the book, or update the people of the book, very qukliy ,the phone tell me GREF has increased to 201,and it increased when i next acess the phone book. i have use the ContentResolver,not the activity query.
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Aug 26, 2010
How can I get all the column names used in a database table in Android..?
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Dec 31, 2009
On an Android layout, I'd like to have a set of rows, each with two TextViews. The leftmost column of TextViews should be right-aligned, just left of an imaginary centerline down the screen. The rightmost column should be left-aligned.
Examples of this can be seen at http://stuff.greenberg.org/ScopeCalc.htm
What's the best layout to use?
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Feb 15, 2010
I have set a content provider, for some reason I am able to to delete a row this way:
getContentResolver().delete(myUri, "_id=" + "3", null);
but i am not able to delete a row that way:
getContentResolver().delete(myUri, "NAME=" + "chris", null);
getting this error:
02-15 15:48:08.197: ERROR/AndroidRuntime(3043): android.database.sqlite.SQLiteException: no such column: chris: , while compiling: DELETE FROM User WHERE NAME=chris
I have checked my database file, and it is there.. but for some reason i can delete columns from my database only by the _id column, how can i fix this?
error:
02-15 15:48:08.197: ERROR/AndroidRuntime(3043): android.database.sqlite.SQLiteException: no such column: idanmoshik1: , while compiling: DELETE FROM User WHERE USER_NAME=idanmoshik1.
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Aug 31, 2010
How can I make columns in Android ListView? I have this list item layout xml:
CODE:.....
The problem is when the f.ex. wind_direction change from "4" to "300", then the columns are not aligned.
Who can this be made with fixed width of columns and using the whole width independent of devices?
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Sep 24, 2010
I am having problems creating a table layout with 4 columns, that span horizontally.
I want my Row to look like this: AAPL | 200.00 | Image Divider | 1.53 (+1.5%)
I want the 200.00 to be right aligned, as well as the 1.53(+1.5%).
CODE:................
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Feb 25, 2010
I've got a question about updating an app after release. If I have a database that contains 10 columns and I add a feature that requires an 11th column after the app has been released, where would I put the sql code to add the new column so that when they install the app it keeps their current data, but adds that 11th column? Is that even possible or would I need to create another table that references the first with a foreign key?
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May 15, 2010
I create a set of RadioButtons in a RadioGroup on the fly (no XML), and would like to arrange them in either two columns or two rows - right now they are in a single column. I could of course create two sets of RadioButtons, and place each in a different RadioGroup view, but presumably then I would have to control the active state of each button by taking into account both views. Does anyone have an idea how to better do this?
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May 15, 2010
I have two SQLite tables, that I would love to join them on a name column. This column contains accented characters, so I am wondering how can I compare them for join. I would like the accents dropped for the comparison to work.
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Jan 13, 2010
I am trying to get the emails from a contact on Android (2.0.1). I canīt get the email. The code...
When I try to get the values of the columns, I get null. How can I obtain the emails? Maybe the CONTENT_URI is not correct or the data is stored in another table and I have to make a join.
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Sep 20, 2010
I need create a gridview with 50 columns for my application.Then i did this gridview created with 5000 px width and in the horizontal view.its now working .But the problem is its loads about 5 row of data first time about(250) images in gridview.when scroling it reuse the above rows. but actually i need to load only the images in screen.but it not working.
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Nov 3, 2009
I am displaying a table of values in my android application, and would like the columns to be distributed evenly in terms of size , instead of sizing according to content. Been playing around with stretchColumns but couldn't manage to figure out the right combination.
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Mar 4, 2010
I am after a code to get the available column names of a table in Android?
I looked around and didn't find anything.
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Oct 5, 2010
I need populate three columns in Android activity with dynamic data. How can I do it?
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Apr 28, 2010
I have an XML layout which contains a TableLayout with an unknown number of TableRows...
The number of Rows will be established durin runtime, what I do know though is that I want two columns...
So I have a couple of questions regarding this :
- is there a way to set the whole TableLayout to have 2 columns ?
- is there a way programmatically to give an id to the (during runtime) created TableRows which will be placed within the TableLayout, so I can reference them later on from other parts of the software ?
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Aug 28, 2010
I have a dynamic tablelayout that I build programmatically. Every so often one of the rows has a child SeekBar.
How I can programmatically make these SeekBars span across all the table columns?
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Oct 6, 2010
I am trying to see if someone can help me with a simple list view I am tying to make. I am specifically facing problem trying to introduce a new column in this list view. Label 3 in xml code below is the new column I m trying to make. Should I have a new linear layout and wrap two text views in it or is there some other option? code...
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Oct 2, 2009
I am working on an app that will need to connect to an external database and pull certain columns. I am looking for some help in opening a connection to the database. In another words, something like ODBC or JDBC in web development.
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Jul 24, 2010
I want a Layout that is as big as the screen with two rows and three columns
like that image =>
http://dl.dropbox.com/u/2024237/Bildschirmfoto-DroidDraw.png
the colors should be buttons.
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Sep 6, 2010
I am new in Android development, I got a simple question to ask, I know the way how to implement item insert to DB table when there is only one id column and one "name" column in the table, which is code...
But how about there are multiple columns (more than 2 columns) in the table, how to implement the insert function?? For example I have a TABLE (myTable) has the following columns:
"CREATE TABLE myTable (id INTEGER PRIMARY KEY, date TEXT, time TEXT, cost DOUBLE)"
Now, I want to use SQLiteStatement to insert a item to this table, how to do that?
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