Okay, so I am still learning to do some coding here, and I seem to have gotten stuck.
I want to have a select number of documents added to a package for the Android OS
but I don't know how to store said documents. Do I add them all under res/raw, or make an SQLite database and call from there?
More importantly, I need to be able to call those documents when a search criteria is added.
I was on the Android reference site, and they add write functions for the SQLite db, which I would prefer not having as an option.
What kind of database should I implement here?
I would prefer a link to an example, but anything would help at this point.
Try reading this.
Notepad example
or make an SQLlite database and call from there?
No you don't create a SQLlite database it will be created for you after your App start the database call.
See this SQLiteOpenHelper
And SQLiteDatabase
Related
i am new to android. i already created a database and store some data there. What i want is that the stored data in my database, I want to print it all out in another activity.
I don't know how to do this sharing of one database in all activities. I did research but they are all complex codes that i don't understand. Greatly appreciated if you could give me some simple codes about it. Thanks
im using SQLLite database.
You can use the same database throughout the whole app. In order to create an interaction bridge between your Activity and Database, you need to utilise few classes like ContentResolver and ContentProvider. Here is android example of how to create a ContentProvider -
Creating ContentProvider
You can also read this blog for better understanding about how things work in Android in terms of Database.
Hope it helps.
The same database can be used in all activities.You need to create a class through which you can access the database.Before I can tell you how to retrieve data you need to tell me somethings.You have written that you have already created a database.Have you created an external database and are trying use the database from assets folder or have you created an internal database in your android application?
I have created a database which contains 4 tables using Firefox plugin. The format of the saved database is .sqlite(name.sqlite).
I just want to know how/where to insert it into the android project that I am developing and what the changes are that I should make in my project (like changes in the Manifest file). I guess I should paste it into an asset folder, but I do not know how to access it in the code.
I want to add, view, update and delete data in the table, how should Ido this? Or Should I use another way?
This is a pretty solid tutorial: http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/
Basically, don't copy your sqlite file directly into the project. Follow the steps and create / upgrade your database in the provided onCreate and onUpgrade hooks.
These hooks give you the opportunity to change your database structure when publishing updates through the Play Store.
And the proper places to do longer running operations to upgrade all your data, or prefill your data from disk/network.
If you want to prefill your DB from a dataset, you can provide that data in a raw XML, or JSON, or CSV, and after your onCreate do all the inserts when the app launches from a fresh install.
Here is some good tuts for sqlite...
http://coderzheaven.com/2011/04/using-sqlite-in-android-a-really-simple-example/
http://androidexample.com/SQLite_Database_Manipulation_Class_-_Android_Example/index.php?view=article_discription&aid=51
http://www.vogella.de/articles/AndroidSQLite/article.html
I'm working on an android project that requires writing to a created database and later reading from it.
The idea is for the user to fill out a form and then submit, it will submit into a database table in the first row. Then if they hit submit again it will submit to the second row.
I have all of the activity layouts defined but I'm confused on how to make the databases. I'm thinking maybe I can make a content provider?
Can anyone advise me on what to do? All of the questions I look at on here skip the baby steps, and that's what I need
Yes you should make a content provider. There are a lot of great tutorials out there for making databases - try section 8.0 of this one
http://www.vogella.com/articles/AndroidSQLite/article.html
Since you plan to use a pre-loaded (created) database wherein the DB structure has been already defined, Refer to this link on how to include your pre-created DB file into your app :
http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/
And to then add new data to your database refer to this tut.. You can ignore the create Table part here since you already have the table structure ready.
http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/
Hope this helps.
First of all you dont need Content provider...Content provider is only need when you want to provide your data to other application...Its kind of central repository of data for other applications.
Now You have to use the SQLITE database in android...Since android support sqlite database..
Below link will guide you...
http://developer.android.com/training/basics/data-storage/databases.html
Google has large manuals for all the aspects of Android development http://developer.android.com/training/basics/data-storage/databases.html
it might be done without content providers too.
this might be helpful.
http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/
I'm currently trying to learn how to use a SQLite database with android. I've managed to successfully follow http://www.androidhive.info/2011/11/android-sqlite-database-tutorial/ but I'm now looking to make a table with 25-30 fields. It seems like it would be a huge task to type out all this in a similar style to that link especially as I'd want to be able to search by many of those fields.
Is there something I can use to automatically generate a database helper class with this number of fields and methods to search them? Or am I going about this completely the wrong way?
Thanks
First off i just recently started android programming also and i particularly enjoyed this tutorial about databases : http://www.vogella.de/articles/AndroidSQLite/article.html
To generate the queries i think it will be better you use an SQLite Database Manager and just copy and past your queries in the methods.
I am working on my graduation project
It has the same idea as calories counter application of Fatsecret >> if you know!
I created the database file using SQLite, I copied it into the asset folder, and then wrote the code as in this link:
http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/
recently I read a code that only use openOrCreateDatabase(name, mode, factory) to deal with the database
Can I use this in my case, which code is better?
Best Regards
There is good basic documentation on how to work with sqllite in android. Check out http://developer.android.com/guide/topics/data/data-storage.html#db to get an overview on how to use sqllite in your application.
Basic idea is to extend http://developer.android.com/reference/android/database/sqlite/SQLiteOpenHelper.html class and from there do the rest of CRUD operations on your database.
Also i forgot to mention: preferably avoid using openorcreatedatabase method, recommendation is to keep using sqliteopenhelper instead