I have a list of ready-made physical exercises and I want to add them to my application so that they are displayed.
I'm thinking of using the Room database, but how can I populate it?
Or perhaps there are other options for solving my problem?How to populate the Room database?
You'll a Data Access Object (DAO) and a Insert method.
It's worth taking a look at documentation:
https://developer.android.com/training/data-storage/room
Related
In one of implementing feature set application have to perform frequent Search Query directly from sqlite data Base. I found FTS could be better way to perform faster search. I created it but it's returning no data. I checked by opening db file, Virtual Table Created but no data there.
My question is, does Virtual Table required to insert data manually before to fetch any data. Any suggestion !!
The documentation says:
FTS tables are populated using INSERT, UPDATE and DELETE statements in the same way as ordinary SQLite tables are.
Creating android financial manager application with using of SQLite.
My question is how to deal with the database in terms of object oriented programming?
Say I want to write information about a purchase into the database.
Should I:
1) Get user information from EditTexts, put it into an object say "Purchase", which contains fields: productName, ammount, price...
And only than put information from the object into the database?
2) Or put data from EditTexts directly straight into the database?
3) Another way?
I've used many different frameworks available out there, from SQLite to ORMLite. But, in terms of speed, there is no alternative to Realm.io. You can basically create your data models and define them as Realm Objects. Then the rest is easy, you can read, write and query among the data models you created.
If you want to know, what is a better way to use SQLite, than you can check this article
Option 1. Create objects that does represents your data.
Create your Database Class to use the objects instead of methods with multiple arguments.
I would make a container class that you use as a way of keeping the code clean.
Is it possible to set ID of certain record? I'm importing multi table database into my application database, that is mapped to ActiveAndroid model. I get it over http in json.
It would save a lot of work to preserver those server-side ids on records to have same relations id<>id as on the server.
I planned on deserialisating json to objects using gson and then to save them using activeandroid .save()
Or what is the simplest way to accomplish something like that. Get rid of the the json and do some SQL import?
Not possible. Importing data is to be done by calling SQL inserts directly.
I am developing an App in which now i have to create database for more better user experience. Then i came to know about DB4o which is many times faster tool for creating database than other like SQLite, MySql etc, but the problem is i am not able to find any single example that explains about DB4o and how to create database using Db4o. If anybody has used it, please post an example or send me link.
To store the object in database use
db().store(exercise);
To retrieve All records from database, use
db().query(Object);
To retrieve particular record from database, use
db().queryByExample(Object);
If you need example, Try My blog example using db4o.
In this example, simple student object will be stored in database using db4o. Student object will contain student name, register number, and his age.
Thank you.
How can I insert a list of data into SQLite which is fetched from a remote database? Also I want to list out these data during offline mode. What is the easiest method to do this?
You can create a ContentProvider (in most cases it ends up necessary)
http://developer.android.com/guide/topics/providers/content-provider-basics.html
Or use the SQLiteDatabase and SQLiteOpenHelper classes:
http://developer.android.com/reference/android/database/sqlite/SQLiteDatabase.html
http://developer.android.com/reference/android/database/sqlite/SQLiteOpenHelper.html
Or the ORMLite library:
http://ormlite.com/sqlite_java_android_orm.shtml
the best way is, i have the same thing as you. from an api i will get thousands of xml and need it to store in 3 tables of a database. it will happen when i launch the app. for the best practice i will do the fetching data from api and storing it in 3 tables in Async Task as follows:
do in background(){
do your fetching data from remote
store in db.
}