Hi,
In my app i should maintain a local database which contain 20 tables with
primary and foreign keys later it should sync with remote server database.
I have some queries following
- I came across that foreign key constraint is not supported.
- Can we implement Joins.
- What is
usually the syncing with a database pattern happens via service in an
alarmmanager then updating a content provider or something of that
nature..
kris
On Fri, Oct 26, 2012 at 1:26 AM, nageswara rao Rajana
nagu.raj...@gmail.com wrote:
Hi,
In my app i should maintain a local database which
I have 2 users (out of thousands) reporting this problem. I am at a loss
as to why this is happening, also. It doesn't have anything to the data as
the user claims they few rows. I even had them recreate their database (I
have a backup facility that that backs up/restores from JSON) and the
Actually, just to respond to myself -- I don't believe this a SQLite issue.
For this only happens on the one query that runs in the AsyncTask.
I run the exact same query twice in parallel: once in the UI thread (I
know I shouldn't, but it's fast) and then I run it again in the AsyncTask,
Also, bear in mind that on 2.2 and below (and some 2.3 devices), we
are dealing with the YAFFS2 filesystem, so if some other app is doing
a bunch of disk I/O, you may be blocked by their work.
On Wed, Mar 21, 2012 at 3:22 AM, Zsolt Vasvari zvasv...@gmail.com wrote:
Actually, just to respond to
But that should effect both the UI thread query and the worker thread
query. But only one runs slow.
On Wednesday, March 21, 2012 7:11:43 PM UTC+8, Mark Murphy (a Commons Guy)
wrote:
Also, bear in mind that on 2.2 and below (and some 2.3 devices), we
are dealing with the YAFFS2 filesystem,
Are you perhaps running multiple instances of this query at the same
time, causing contention inside SQLite?
From what you've described, it seems possible - since AsyncTask uses a
pool of more than one thread, and you also mentioned running this
query on the UI thread as well.
I would try to use
2012/3/21 Kostya Vasilyev kmans...@gmail.com:
From what you've described, it seems possible - since AsyncTask uses a
pool of more than one thread, and you also mentioned running this
query on the UI thread as well.
Actually... on ICS, that's apparently no longer true.
Somebody tweeted this
Wow. Just checked my 4.0.1 and 4.0.3 sources - yes, it's there:
/**
* An {@link Executor} that can be used to execute tasks in parallel.
*/
public static final Executor THREAD_POOL_EXECUTOR
= new ThreadPoolExecutor(CORE_POOL_SIZE,
MAXIMUM_POOL_SIZE, KEEP_ALIVE,
Of course there is a faster way. Run a second query that identifies the
required row (make sure the condition is indexed) and throw the cursor out
of the window.
On Wednesday, March 21, 2012 3:22:24 AM UTC-4, Zsolt Vasvari wrote:
I run the exact same query twice in parallel: once in the UI
Hmm, it's hard to debug since I cannot duplicate the issue and it happens
for so few users.
AFAIK, both of these guys were on Gingerbread.
On Wednesday, March 21, 2012 10:22:11 PM UTC+8, Kostya Vasilyev wrote:
Are you perhaps running multiple instances of this query at the same
time,
Can you please elaborate?
Basically, what I need to do is find the row number of a particular row
where _id = X.Basically, I am trying to position my ListView so that
this row is showing out of potentially thousands of rows.
I strongly suspect there is a better way than to loop through
I'm rewriting a simple translation app with a SQLite db. There is an
extreme hit to performance between two queries, but only on certain devices.
One query lists the english words in a ListView, the other lists the
secondary language in a list view. The data is structured differently, and
is
You can get the SQLite version to perform acceptably. You just need to use
it correctly -- set up indices as appropriate as needed for joins and such.
I am not a SQL (lite or otherwise) expect in any way so I can't help you
with the particulars, but at the very least make sure you are actually
I have created an open source Google Android App, hosted on Google
Projects to help new Android Developers get up to speed with how to do
some various development tasks, and provide some reusable code that
all developers may use.
The Google Project URL is
You will need to learn SQL. Getting all data from a table goes like
SELECT * FROM tablename
That's what needs to go into the SQL string field.
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I am facing a problem to access IP camera directly in android.I got byte
streams of video file by using http request I am facing a problem How to
convert live stream to video file . Anybody knows it please replay me..
Thanks
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hello!
i don't know how to view my DB file as list. there's an SQLite data
base file prepared and already passed to my comp from droid device.
and has been opened in sqlite browser. the browser has a window
where :'SQL string' textbox and 'SQL quiary' button.
there are three column in my DB:
hi i am a student from Brazil and I am studying android. I would ask
if you could
share a material on Android and sqlite (CRUD). Thank you all
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Hi,
I implemented an database application on device. But i am unable to
find where the database file is stored on sdcard.
Please any one help me.
Thanking you,
Nagu.
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HI,
its simple to check ur all data. use sqlite database browser. download it
from its website.
Steps to find the sqlite data from sdcard.
- Go to DDMS-file explorer
- click on mnt- Sdcard
- choose ur desired project's data
- and pull from sdcard(this option is in the corner of file
Hi,
I want to extract db file from device.
Thanking you,
Nagu.
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Hi,
i think you find you ans on this site
http://pa.rezendi.com/2010/04/sqlite-on-android.html
http://stackoverflow.com/questions/1209469/storing-android-application-data-on-sd-card
On Fri, Jun 17, 2011 at 2:50 PM, nageswara rao rajana nagu.raj...@gmail.com
wrote:
Hi,
Hi Ankit,
Thanks for the links. I will work on it and i will get back to
you, if i get any issues.
Thanking you,
Nagu.
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Hi,
Ok.
On Fri, Jun 17, 2011 at 3:00 PM, nageswara rao rajana nagu.raj...@gmail.com
wrote:
Hi Ankit,
Thanks for the links. I will work on it and i will get back
to you, if i get any issues.
Thanking you,
Nagu.
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u easily get exact db file .
use these steps
On Fri, Jun 17, 2011 at 3:04 PM, Ankit Kasliwal kasliwalankit2...@gmail.com
wrote:
Hi,
Ok.
On Fri, Jun 17, 2011 at 3:00 PM, nageswara rao rajana
nagu.raj...@gmail.com wrote:
Hi Ankit,
Thanks for the links. I will work on
Hi everybody!
I would like to know better ways to use SQLite in Android.
I've got some UI Activities and background service (Android service
which runs some AsyncTasks to change the data, they also can use
database concurrently )
First I tried to use all this stuff as is, just open cursor in
Hi,
im doing debug with my mobile. My code works in the past, but now is not
working and i dont know why i cant create or open an existing database.
Here is my code:
http://stackoverflow.com/questions/2163100/creating-database-in-android
Could you help me about how to solve this problem?
I
I am new to android and I am getting follwing errors in my
compilation..
//Cannot make static reference to a non-static method
//Cannot make static reference to non-static fields
please help!
here's the code..
package database.create;
import android.app.Activity;
import
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