I am trying to connect my android application to sqlite, i dont knw how to configure SD card in emulator to have a database... can anyone help me please?
You don't need to configure an SD card in the emulator to create and use a sqlite database. You can create an SQLiteOpenHelper class that will do all the work of creating, opening, upgrading and other tasks on the database.
You can follow the tutorial on this link to understand the entire process. The blog has really explained the entire thing in a very simple manner and plus, also gives you the entire tutorial project as a download too.
Android Sqlite Database tutorial
Related
I have made my database using greendao and Have been testing it on the emulator so far. It was working so perfectly. And there was no memory leak and any error whatsoever .
But now I am stuck to just one single point. and that is how do I use this
pre-populated database in the application on the real device. How can I push my database into real device?
Some one suggest me to put my database file in the assets folder and later on Application start just copy it into device.
The suggestion was good, but it is not helping me as there comes the error when I run my application for the first time , but after that it goes forward But then greendao is unable to get the database it find.
The error I got at first run is as under.
can not open database
Buton second run it goes forward and there in next activity I am getting data in list using greendao , but it is not finding that database.
Please tell me :
1) How can I push my pre papulated database into the device to be use by greendao methods.
2) What is a way that is supported in all devices.
Please share me the code. Its been a long I am trying to get over this. But nothing is helping me out.
I made a simple dictionary demo for Android, which manipulates prebuilt database in assets folder with GreenDAO 3.x.
All you have to do is extended the DevOpenHelper class that GreenDAO generates.
Here is the project link: Sawloih.
I see a sqllite database in another application, why can't I just just drag and drop from that application to mine in the eclipse environment? that way I can use data already in that database?
Android doesn't do too well with using an sqlite database file directly. Generally the way to go around it is to package an sqlite database as a resource and on first create of the app to load that resource and then connect to it and then copy all the data out of it. The downside of this is you are essentially doubling all your data.
If you are the publisher of the other app then you can list the database as a shared database to share between your apps.
Share SQLite database between 2 android apps?
Noone has written an Eclipse plugin that does that. You can write one if you feel it is both useful and worth your time.
Hello everyone first of all.
I am making an application for android, which I need to have a database for information.
The database management computer mailbox.
What I need is to take that database and included in the application for android'S SELECT generally.
I've been testing it on this website, but I can not get it to work. I do not think either the DB copy to memory, and then to perform the query, she says she can not find the table.
I have been debugged and saw that even the open works, but something strange happens ...
If you have some method or way of doing this, I would really appreciate it.
Thanks for everything.
Check out these resources
This tutorial by Lars Vogel
This reference article from Android website
Puit it in your assets directory in your apk, and on first use copy to "/data/data/YOUR_PACKAGE/databases/" directory. Here is SO discussion on this topic. database in assets folder
First I want to say thanks to everyone that reads this. Stackoverflow is an amazing site and you guys help me out with answers everyday in the form of questions already submitted. You all rock!
My problem:
I'm working on a database app that I'd like to back up the database at certian points so I can save the data I've collected in database over time, during development. So to save the database to accessible memory I've followed this page:
How can I pull databases off my android onto my desktop?
..and the above code is working great in the emulator (I can use DDMS to pull the copy of the database to my PC and view it using SQLite Database Browser). However when I run it on an actual device, SQLite Database Browser can't read it. To extrapolate, the copy is being created just fine on the SD card, but when I copy to my PC from my device and view it, I get nothing, SDB can't understand it or something. However when I use an emulator, I can copy it off using DDMS and view all the tables just fine with SDB.
Using WinMerge to compare the two raw database files (one generated by the device, one generated by the emulator both running the same code) I can see there are formatting differences, but nothing that looks corrupted, but I'm not 100% sure. The android metadata and SQL sequence tables appear to be in there (albeit in different orders), as well as my custom table.
Do you guys have any suggestions on how to debug this? I'm not sure where to start since it seems to work perfectly on the emulator. Also, I've run the emulator at the same android release (2.3.3) as the device, so I'm am pretty sure they are using the same SQLite engine.
Thanks,
Matt
I'd try opening this database with different SQLite clients.
If that doesn't work, the next step may be to try finding an SQLite database file validator and/or to run the standard SQLite client in debug mode (but to be honest, I don't even know if those two last options are even possible).
How can I connect to and insert and select data from a database in Android?
There are too many examples of how to do it:
Android SQLite Basics: creating and
using a database, and working with
sqlite3
Android Data Storage
Also, the NotePad tutorial in official developer's page is a good starting point.