How to migrate to SQLite in Android from an older API?

Migrating to SQLite in Android from an Older API

In this guide, we will discuss the process of migrating your Android application from older database APIs to SQLite. SQLite is a lightweight, serverless database engine that is built into Android, providing a robust solution for local data storage.

When migrating, you'll want to carefully plan the transition to ensure data consistency and minimal disruption to your application. This typically involves creating a new SQLite OpenHelper class, updating your data schema, and migrating existing data as needed.

Steps to Migrate to SQLite

1. Create a new SQLiteOpenHelper class to manage database creation and version management.
2. Define your database schema within the class.
3. Update your application code to use SQLite APIs for data operations.
4. Implement data migration logic if your application already has existing data.

Example Implementation

        public class MyDatabaseHelper extends SQLiteOpenHelper {
            private static final String DATABASE_NAME = "mydatabase.db";
            private static final int DATABASE_VERSION = 1;

            public MyDatabaseHelper(Context context) {
                super(context, DATABASE_NAME, null, DATABASE_VERSION);
            }

            @Override
            public void onCreate(SQLiteDatabase db) {
                String CREATE_TABLE = "CREATE TABLE my_table (id INTEGER PRIMARY KEY, name TEXT)";
                db.execSQL(CREATE_TABLE);
            }

            @Override
            public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
                db.execSQL("DROP TABLE IF EXISTS my_table");
                onCreate(db);
            }
        }
        

Once you have set up your SQLite database, you can start using it for all your data storage needs.