At this moment, i talking about how to manage our Andorid application data using SQLite database. The event was held in Jogja Digital Valley, organized by dicoding.

1. Android Persistance Data
using SQLite Database

2. How I am
Name : Arif Akbarul Huda
Job : Lecture | Programmer | Book Writer | Researcher
Office : qiscus , AMIKOM, home
Socmed : @omayib , http://id.linkedin.com/in/akbarul

3. My contribution...

4. Qiscus [kis-kas] (noun). Perusahaan teknologi yang
menyediakan layanan pesan instan dan komunikasi untuk
tempat kerja. Perusahaan ini didirikan di Singapura pada
tahun 2013 dan memiliki pusat riset dan pengembangan
teknologi di Yogyakarta, Indonesia.[1]
(https://id.wikipedia.org/wiki/Qiscus)

5. Lets begin

6. How they manage the data?

7. Saving data
Shared
Preference
File
Storage
SQLite
Cloud

8. what kind of storage we need?
It is depend on your data type and structure

9. SQLite Database
[se-kyu-lait]

10. TodoList Application
Source :
https://github.com/omayib/TodoList/tree/feature/sqlite

11. What is SQLite?
● Opensource db
● For limited memory devices
● Support SQL syntax dan transaction.

12. SQLite database file location
DATA/data/package/databases/fileDatabase.db

13. SQLite Data Type
● NULL
● Integer
● Real
● Text
● Bloob

14. SQLite Component
SQLiteOpenHelper
-onCreate()
-onUpdgrade()
SqliteDatabase
- insert()
- update()
- delete()
- execSQL()
Cursor
- getCount()
- getInt()
- getString()
A helper class to manage
database creation and
version management
has methods to create, delete,
execute SQL commands,
and perform other common
database management tasks
the result set returned
by a database query

15. Simple and clean architecture

16. Design your code like a puzzle

17. Todolist Application Architechture
UI
Model domain repository
SQlite Cloud..

18. Todolist Application Architechture

19. LocalDatabaseConfiguration configDb = new LocalDatabaseConfiguration(this,
“databaseName.db”, null, 1);
#1. Make a configuration for our SQLite database
#2. Initiate the repository
TodoRepository repo = new TodoRepository(configDb);
Database
Creation

20. #4. insert an item
Todo newTodo = new Todo(”randomId”,”beli makan!”);
repo.insert(newTodo);
#5. update an item
Todo itemTobUpdated = new Todo(”randomId”,”beli makan!”);
repo.update(itemTobUpdated);
#6. update an item
Todo itemTobeDeleted = new Todo(”randomId”,”beli makan!”);
repo.delete(itemTobeDeleted);
#3. get all todo items
List<Todo> todos = repo.findAll()
Database
Querying

21. Show me the code!

22. Performance

23. E/Database(234): Leak found
E/Database(234): Caused by:
java.lang.IllegalStateException: SQL iteDatabase created
and never closed

25. Open the database but forgot to close it
Possible Solution :
- make SQLiteDataBaseOpenHelper as Single Instance
- initiate inside Application

26. public class DatabaseHelper extends SQLiteOpenHelper {
private static DatabaseHelper sInstance;
private static final String DATABASE_NAME = "database_name";
private static final String DATABASE_TABLE = "table_name";
private static final int DATABASE_VERSION = 1;
public static synchronized DatabaseHelper getInstance(Context context) {
if (sInstance == null) {
sInstance = new DatabaseHelper(context.getApplicationContext());
}
return sInstance;
}
private DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
}

27. public class TodoApplication extends Application {
private TodoRepository repository;
@Override
public void onCreate() {
super.onCreate();
LocalDatabaseConfiguration localDatabaseConfiguration =new
LocalDatabaseConfiguration(this, LocalDatabaseConfiguration.DATABASE_NAME,
null, LocalDatabaseConfiguration.DATABSE_VERSION);
repository =new TodoRepository(localDatabaseConfiguration);
}
public TodoRepository getRepository() {
return repository;
}
}

28. ACID
(atomic, consistent, isolated, durable)

29. Handling multiple transaction and
large data

30.
db.beginTransaction();
try {
for (int i= 0; i< values.lenght; i++){
// TODO prepare ContentValues object values
db.insert(your_table, null, values);
// In case you do larger updates
}
db.setTransactionSuccessful();
} finally {
db.endTransaction();
}
//

31. end