Android :: Inserting Data Into Cursor?
Jun 23, 2009
I'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.
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Aug 14, 2010
I am an android application developer. I am developing an application which requires of me to use Sqlite database. I have implemented fetching the data, but i am facing problems when i try to insert data into the Sqlite database. The problem that i am having is that the new data i enter is not fetched, i.e nothing is new is being entered into the database.
this is the method i wrote in Data.java
myDataBase is an object of SQLiteDatabase
public void insertTitle(String Recipe)
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_NAME,value);
myDataBase.insert(ZRECIPE, null, initialValues);
}
and i create an object "d" of it in Add.java, where i call the "insertTitle()" method. But nothing is inserted.
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Sep 2, 2009
I need to insert approximately one million rows of data (spread over 4 tables) - each row has one or two numeric fields, and two or three text fields (normally quite short). Single-column indexes on all the fields. After doing some tests on the emulator with a small test set, I extrapolated (assuming the last row will be inserted with a similar speed to the first row) my results to figure out that this would take about 15 hours (I have a Core 2 Duo running Vista). However, then I tried running the small test set on my Hero and I was surprised to see it run more than four times faster. I would guess it would take about 3 hours on the Hero. Alternatively, I could make the pre-populated database available as a download on the first run but this is likely to be a 120MB download. I have a few questions I'm hoping someone can help me with: 1. SQLite performance on the actual device being 4-5 times faster compared to the emulator - is this normal/expected? 2. Do the figures above generally sound fast/slow/normal (sorry this is so vague)? 3. From a user perspective - would it be best to provide a 120MB download or a 3 hour "first-time initialisation" step (plus 6MB download)?
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Feb 1, 2012
How is inserting ,editing and deleting data from mysql database using webservice...how is it do?
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Oct 27, 2010
I am new to android development.currently i am facing a problem while inserting/retrieving image to sqlite database using android Code...
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May 11, 2010
I need to know how to retrieve data from cursor. I need this because the ringtonemanager returns all the audio files in form of cursor object, I need to know how to retrieve the values.
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Feb 3, 2010
I have not found an example yet with a solution to the following task.
I have a SQLite database with two tables- BOOK and AUTHOR. I execute a query on the DB that uses a join and results in a cursor that looks like this. code...
New authors and books can be added to the database at any time, and I also need the user to be able to remove books, hence the [ ] checkboxes.
So i have two row layouts, row_author.xml & row_book.xml. I detect when I need to show a row_author subheading by seeing when the current author has changed compared to the previous row. But I have realized that the rendering of an Author Row will then move the cursor forward one row and jump over their first book.
Can anyone suggest a good approach to presenting data like this? Is there a much better way to do this?
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Apr 23, 2010
I have some text data in database which I have retrieved in a Cursor, and I am displaying it in a ListView. What I want to do now is that when you select click a particular row in the list its text content should be displayed in full screen and the user should be able to scroll horizontally (like scrolling between iPhone home screens) to view the contents of the Cursor.
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Aug 30, 2009
How can I create a list Array (the list display First Alphabet when scroll) with the cursor data?
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Sep 3, 2010
I have a ListView populated via a CursorAdapter. I give my user the ability to alter the data in the list. For example, the user can mark a row as being unread (the data are messages).
Suppose my user marked a row unread. Would a proper implementation mark the row in the database as read and then requery the Cursor?
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Mar 29, 2010
The 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.
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Mar 21, 2010
I 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?
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Jan 10, 2010
Maybe I'm going about this the wrong way, but if so, please correct me. Here is the situation: I have a query which returns URI strings for ringtones stored in a database.
I am trying to add a "column" to this cursor with the ringer "Title" (since this can change outside my program). I can successfully user RingtoneManager to get the title, but I cannot figure out how to add this "column" to the cursor data for later use. Here is what I have so far: Code...
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Aug 28, 2010
I have a TableRow that is empty on compile time. The tablerow is supposed to be filled with a chart generated by JFreeChart during runtime. How do I add the chart into the tablerow?
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Aug 5, 2009
Looks to me like every time you run your app, you insert two more rows in to the database, so the first it will have 2 rows, then 4, 6, 8, etc. On Wed, Aug 5, 2009 at 1:12 PM, saptarshi chatterjee <
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Aug 20, 2010
This is my SimpleDBAdapter Class that encapsulates all the complexities of accessing the database and the inner class SimpleDBHelper takes care of CRUD operations,now the Problem that i am facing here is when i deploy the code, the tables were getting created, but the
i am unable to insert tht values in to the table, the id is returning -1 that depicts that there is an error,while inserting the values.
id = db.insert(TABLE_SIMPLETABLE_CLIENT1,null,contentvalues);
SimpleDBAdapter.java
import android.content.ContentValues;
import android.content.Context;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
import android.view.ViewGroup.MarginLayoutParams;
public class SimpleDBAdapter {................................
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Jul 22, 2009
I'm able to insert entries into contacts (from my app) with name, phone and email however I can't seem to add a photo to these entries.
This works:
CODE:............
continuing this fails:
CODE:.......
This is the stack trace:
CODE:...............
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Aug 28, 2009
I am trying to insert a new contact, but, even though I get a valid URI back, the Contacts do not appear in the "Contacts" application.
Code...
My problem lies already in the first three lines. The contact does not seem to be stored. However, consecutive runs of this show, that the internal ID is increased nonetheless.
Is there something I am missing? Do you have to "commit" the changes?
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Aug 9, 2010
I am inserting all day recurrence event in the android calendar. the code is following: CODE...
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Aug 9, 2010
I am inserting events in my android calendar. the code is following: CODE:.. I am getting the following exception: java.lang.IllegalArgumentException: allDay is true but sec, min, hour are not 0.
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Mar 19, 2010
I created a custom view extending "android.view.View" class. Now in this class can I add a widget like button or image View.
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Aug 11, 2010
Ive developed a DB for use with my app but I've realised that I actually want extend my db to incorporate images! I will be hosting the db online but for now I am using it locally for development purposes. To create my db I have been using SQLiteBrowser, which I think is a standalone version of the Firefox SQLiteManager plugin, however I cant see a way to insert an image. I recognise that an image will have to be transfered into a byte array and stored as a blob, but rather that developing this element of the db programatically, I was wondering if the was a gui tool to help me skip this developmental element.
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Nov 19, 2010
I am trying to insert rows into my database, but nothing gets persisted. Here is my helper class:
package com.android.cancertrials;
import java.util.Calendar;
import java.util.GregorianCalendar;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;..................
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Dec 25, 2009
I'm working on a simple Android app, it is much like any other simple Database app. I have 4 EditText fields where the user inputs 4 different small pieces of text. I want this text to be inserted in to my Database table in the corrects rows for my columns. I am not really sure how to go about doing this. I know onClickListener needs to be used but not sure how to use it.
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Nov 24, 2010
How do I use an SQL statement on an sqllite database to insert the current date in UTC. I found the NOW function but what format is that in? This will be on mobile devices so everyone will have a different locale, however, I need a standard time format because the device will compare the dates with my server. Also, is there a way to automatically update a 'modified' field when the data in the row is changed like you can in MySQL?
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Aug 10, 2009
I read somewhere in the Android documentation that (paraphrasing here): 'if you do make your own View take up the whole screen, it is then possible/even-advisable, to insert and manage the 'status-bar' within your View'. How do you do that? - i.e. insert the status-bar within ones own 'full- screen' View?
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Mar 13, 2010
I am currently developing an application and i need a login menu. In login menu there is a password textfield, but i don't know how to change the default keyboard. I want the keyboard changes only appear only number ( not complete keyboard as the default) when user at login menu. What should i do? Is there any class that handle the behavior of on screen keyboard?
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Feb 19, 2010
I need to take a picture with the camera and, if depending on the picture size, rotate it before saving it into the gallery. I'm using
Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
imageCaptureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
startActivityForResult(imageCaptureIntent, IMAGE_CAPTURE);
To take the pic and save it to a temporary file. Then
Bitmap bmp = BitmapFactory.decodeFile(imagePath);
String str = android.provider.MediaStore.Images.Media.insertImage(cr, bmp, name, description);
To save it. This is the code i have tried to use to rotate the bitmap.............
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Sep 9, 2010
I am trying to inject a long text entry into a SQLite database, in a TEXT field. This text has new lines in it (i.e. it spans multiple paragraphs). I can get the new lines to show up if I do the INSERT manually:
INSERT INTO "LOGENTRY" VALUES(5,40,'PLACE','line1
line2
line4
',1283990533315,'4A','TEXT','',NULL);
but if I have the equivalent text in a CSV file and attempt to .import it into the table, I get an error that it's expecting more columns than exist (as soon as the new line is encountered, the program assumes it's the end of the input and thus it's missing columns). Is this possible? Or is the only way to manually do each INSERT?
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May 6, 2009
I 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?
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