Android :: Possible To Retrieve Data From Two Tables Via ContentProvider Way?
Apr 5, 2009
How to retrieve data from two tables via the ContentProvider way? I.E. the database of Calendar application, include many tables including Events and Deleted, and some others. I want to retrive records in Events table, whose _sync_id field is also in Deleted table. Usually, we write a SQL sentence like: select (all fields in Events) from Events as e, Deleted as d where e._sync_id = d._sync_id or select * rom Events as e where e._sync_id in select _sync_id from Deleted etc. But, how can I accomplish it in the ContentProvider way? I saw ContentProvider.query take a Uri as the first parameter, but pity that I don't know how to build one that could fulfill my purpose.
View 2 Replies
Oct 6, 2009
I want to operate on multiple tables. I searched a lot but everywhere I could find is single table with one content provider.
How can I use multiple tables under one content provider? How can I get result from two/three tables ?
Can I provide my own SQL select query from multiple tables in ContentProvider?
Can anybody give me any example or link where I can get idea?
View 4 Replies
View Related
Nov 10, 2010
I have this database file under the usual databases folder and a bunch of tables inside it. Please note that I don't want to retrieve under the command line. I know I can use the ".tables" command. I want to retrieve a list of all tables in it, using code, so that I can execute some specific algorithms on each of them. Also, I didn't find any questions with this problem on Android, so please forgive me if there is any. I was wondering if there is any function I can use under Databases, but I didn't find any either.
View 1 Replies
View Related
May 7, 2010
I'm writing an RSS reader for Android. I've faced a certain difficulty which the problem I can't resolve since databases aren't my expertise.. So i figured out maybe one of you could help me out! I currently have 3 tables (Categories, links and feeds). My goal is too link a feed to multiple categories. Therefor I'm using a Link table. My databases is an Android ContentProvider (sqlite) and looks like the following:
| Categories | | Links | | Feeds |
|------------| |---------| |-------|
| _ID | | Category| | _ID |
| Title | | Feed | | Title |
| URL |
I currently wrote the following code in my FeedListActivity to retrieve a list of links and their feeds.
CODE:.................
Now my question:
I was wondering how I could optimize this database layout, code or query so I would get my entries in a more efficient way. Because i believe this link table or the query to retrieve links isn't needed! Or am i doing this the correct way?
View 2 Replies
View Related
Jan 27, 2010
I am new to Android and i would like to know if there's any tool to see databases (.db) tables and data into these tables.
View 4 Replies
View Related
Aug 16, 2012
Now I've done a bit of research into Fusion tables already and I know it's possible for me to put all the data that's going to be in my app into a fusion table and then display the fusion table there for the user to see the data. Much easier to update the data when need be instead of making it static text and having to update the app via the play store every time I need to update the data.
How do I do this though? All I know is that it's possible and that I should use the Fusion table API. More than anything I just need a starting point so I know how to set up Eclipse and then learning the code is up to me.
Any apps at the moment that use Fusion tables to hold their applications data? Would be good to download them and have a play.
View 1 Replies
View Related
Aug 18, 2010
I just encountered the following situation. I have an Android app with a scenario which I guess may happen in multiple apps. It's about tagging/labeling/categorizing, call it as you want.After CommonsWare's feedback here a bit of a clarification. I'm weird about doing the second query to the DB inside the CursorAdapter, basically this would result in one query per row and I fear this will heavily impact my performance (I've still to test it on a real device with a substantial amount of data to see how much this impacts).My question therefore is on whether there are some strategies on how to avoid this given my data model or whether I have to basically "live" with that :)
View 2 Replies
View Related
Jun 4, 2010
At the application level, my data is of the form.
* Event
* Contact List
* Contact
* Name
* Email
* Contact
* Name
* Email
The number of contacts is not predefined. Any thoughts on how to push this into a ContentProvider in one go? I basically dont want my application to worry about the hierarchy and bulk insert or something, I want to hand this responsibility over to the ContentProvider.
View 2 Replies
View Related
Jul 25, 2009
I have some questions about how the ContentProvider works behind the scenes.
1. The ContentProvider class is registered in the kernel when the application is installed and then what? Or how do the other applications exactly manage to access the application data?
2. When is actually onCreate called? The documentation is pretty vague...
3. What happens if two applications register the same provider class? (I have more applications that must communicate between eachother. The content provider must be registered, of course, along with the first application installed on the system. The problem here is that I don't know which one will be, so I want to deliver the ContentProvider with all the applications)
View 2 Replies
View Related
Oct 20, 2010
Please direct me to a description of the techniques that the ContentProvider employs to access data. I am trying to understand how it works as well as what is tunable or even if its meant to be tunable. It the memory management tiered, cached, virtual, flat? Is it file based, shmem based, stream based? Can there be a combination thereof?
Any information, suggestions, or references are welcome. The android fundamentals page says: "The data can be stored in the file system, in an SQLite database, or in any other manner that makes sense;" but the android ContenProvider page barely skins the onion.
View 8 Replies
View Related
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.
View 2 Replies
View Related
Nov 8, 2010
I'm working on a API, and i want to take the json data that is display in an adress like this : https://api.empireavenue.com/profile/info/?apikey=YOURAPIKEY&username=TICKER&password=PASSWORD
and take this data to display it on my app .
View 1 Replies
View Related
Jan 6, 2010
I am developing an App that needs to retrieve some data from a web server, but I have no idea how this can be possible?
View 1 Replies
View Related
Jan 14, 2010
I am using httprequest to retrieve data from webservice, I know using tomcat we can compress response data using gunzip algo. But how can uncompress data to display, is un-compress is time consuming? Is there any other way to compress response and uncompress on android?
View 1 Replies
View Related
Apr 30, 2010
I want to retrieve an image from my data/data/com.apps.myapp/images folder and display it in an ImageView. Any clue?
View 2 Replies
View Related
Dec 2, 2009
Am new to mobile development environment as well as android. I m trying to store data in the remote database and retrieve back.
View 2 Replies
View Related
Aug 4, 2010
I need to store and retrieve data from database when the device is in offline.When i run my application when the device have internet it fetches data and shows it user,but i also need the same output when the device is in offline by saving previously obtained data in database,anyone help me to implement it in my application.
View 1 Replies
View Related
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...
View 1 Replies
View Related
Aug 31, 2009
What is the problem in the given code to retrieve the data from the local server by using Http Get method......Give some example code......I tried but if i give the url the result i m getting same url in the text view...shall any one point out wat the error in the code
CODE:........................
View 2 Replies
View Related
Jun 6, 2010
I am new to android.
Create db ,table and insert data and retrieve it make it display in list.
View 3 Replies
View Related
Jul 22, 2009
How to connect and retrieve data from one webserver through coding in android application?
How to achieve this ? Give me sample code for this
View 2 Replies
View Related
Jun 17, 2010
The question is in the title.
View 1 Replies
View Related
Sep 17, 2011
how do i do it that for exmaple. we have a main.xml that have 1 text field for entering a name for example A and when we press a button lets say button 1. it will retreive A's data from database and display on main.xml's textview.
View 1 Replies
View Related
Nov 16, 2010
How do I store and retrieve a byte array (image data) to and from a SQLite database in Android?
View 1 Replies
View Related
Jul 31, 2013
I'm new to android,stuck in this part of my code. If I would like to filter in spinner based on the dates, how should I do it? For example,
I've a list of events, and in my spinner when I select "Today", it will show out the list for today.
I've tried out the coding, however, I met some error. The part in BOLD, ** is having error.
I would like to get the XML data from here:
the highlighted part
here is my coding:
AndroidXMLParsingActivity.java
public class AndroidXMLParsingActivity extends ListActivity implements OnItemSelectedListener {
String[] browseby;
String[] dates = { "Today", "Tomorrow", "Next Week",
[Code] ......
View 1 Replies
View Related
May 26, 2013
This phone was my dads until he got a new one, but he only has a limited amount of time to retrieve the data before it goes back to T-mobile or else he has to pay money for the broken phone core. It was dropped, and broke the digitizer but not the screen. As of now, the display doesn't work at all, but I can hear the phone turn on just fine. I have been trying to think of how I can access the internal storage without tearing the phone apart and getting to the storage directly(not sure if that would work either).
- Model Number SGH - T989
- Not rooted
- USB debugging not enabled. I thought I might be able to get to the storage via adb, but that will be useless without usb debugging activated.
View 3 Replies
View Related
Sep 27, 2010
I'm trying to reduce the number of queries I do to the Android's database. Basically I want to get any email or IM address that contains a user defined search term. Right now I'm doing two separate queries:
Email:...............
View 3 Replies
View Related
Nov 20, 2010
I'm trying to use Android SDK's SQLiteQueryBuilder to join two tables, let's call them t1 and t2, and query that table based on an attribute from each table, say t1.att1 and t2.att2, equaling a certain value. I'm a little confused on the syntax when it comes to the selection.
View 1 Replies
View Related
Feb 28, 2010
I need to display a single list, ordered by date which contains different types of data, images, video and whatnot.
I guess you could have one separate table for each type and the use something like FULL OUTER JOIN (simulated as sqlite doesn't support it) and sort on date. But this would be complicated because I still need to have unique IDs across all tables.
Maybe having a master list which has ID and date, and then JOIN in the types tables? But how bad is the performance of this using sqlite? I really like to avoid having a super table which contains columns all the combined types could ever need.
View 3 Replies
View Related
Jul 30, 2009
I am trying to create a database with two tables. Employees and Computers. A spinner with employee names fill properly when I don't try create and do anything with the second table...
The code to create is:
CODE:.........................
Is there somehting I am doing wrong during the creating, as the rest of the code (to read data) is exactly the same...
View 2 Replies
View Related
