I Cant seem to figure out whats going on here because I have set the value of EditText to TextView in the beginning on onCreate() so when the app starts again it should take the saved value just fine. As of now if I type lets say "Car" it will update the TextView with "Car" and will also have the value of Car even turning to Landscape mode, BUT when turning back to portrait the TextView value is gone and has nothing. So the whole goal of this is to get the TextView to save the word that was int the EditText and maintain it switching from portrait to landscape. (,, , import 7.app.AppCompatActivity import android.os.Bundle import import import import public class MainActivity extends AppCompatActivity.The values will be bound as Strings.įor more details about update() method please refer the following link: You may include is in the where clause, which will be replaced by the values from whereArgs. The optional WHERE clause to apply when updating. null is a valid value that will be translated to NULL. Update() is the convenient method for updating rows in the database.Ī map from column names to new column values. Public static final String COLUMN_LAST_NAME = void onCreate(SQLiteDatabase db) public int update (String table, ContentValues values, String whereClause, String whereArgs) Public static final String COLUMN_FIRST_NAME = "FIRST_NAME" Public static final String COLUMN_ID = "ID" Let’s check the code and understand these methods in detail: public static final String TABLE_NAME = "PEOPLE" Let’s learn how to create database and table in SQLite database and do the operations (select/insert/update/delete) on table records. This xml file for two DML (Data Manipulation Language – used for insert/ update/ delete queries) statements of SQLite Database i.e. We are using this layout to inflate the records we are inserting. It is always a bad idea to make intensive computation, such as inserting or retrieving data from a database, on the main thread. When there are no contacts, we are showing the “No Records” and when user inserts the data, we hide that section. This layout holds all the records and an Add button to add records. We will need to create three layouts for our project And from that screen you can update the record. When you press on update record you, you would be taken back to the screen where you inserted your record.When you press on delete record the particular record will be deleted from SQLite database.When user press the Add button, we’ll show him the form where user can add two fieldsīy clicking the Insert button, record will be saved into SQLite database and user can see added record on the first screen.īy long pressing on record you can Delete or Update record. The final output should look something like following:Īs you can see from the screenshots above initially user will see a list (which would be empty right now, since there are no records) and button called ‘Add‘. We are going to create a project where you will be able to insert/ update/ delete the user records from database. Step 2: Adding permissions to access the storage in the AndroidManifest.xml file Navigate to the app > AndroidManifest.xml and add the below code to it. Note that select Java as the programming language. To get more details about SQLite in general, please refer the following link: Step 1: Create a New Project To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. If you would like to learn more about the above 4 points, please refer the following link: SQLite is used as a database for android application development. To manipulate data (insert, update, delete) in SQLite database – we’ll use SQL (Structured Query Language).SQLite is embedded within the Android operating System, so you don’t need anything external on Android to use SQLite.SQLite is written in C programming language.SQLite is RDBMS (Relational Database Management System).SQLite is used as a Local Database in android.įour Major things to understand about SQLite: So before we start coding our app, let’s understand few things about SQLite. Learn how to Insert Update Delete Retrieve Records in SQLite Database in Android
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