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Android to create grocery list app using SQLite database

Posted on November 24, 2021November 24, 2021 By christo No Comments on Android to create grocery list app using SQLite database

Full source code to create grocery list app using SQLite database

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp"
    tools:context="com.example.application.grocerylist.MainActivity">

    <EditText
        android:id="@+id/edittext_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/textview_amount"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/edittext_name"
        android:layout_centerHorizontal="true"
        android:layout_margin="8dp"
        android:text="0"
        android:textSize="50sp" />

    <Button
        android:id="@+id/button_decrease"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/textview_amount"
        android:layout_alignBottom="@+id/textview_amount"
        android:layout_toStartOf="@+id/textview_amount"
        android:text="-" />

    <Button
        android:id="@+id/button_increase"
        android:layout_width="50dp"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/textview_amount"
        android:layout_alignBottom="@+id/textview_amount"
        android:layout_toEndOf="@+id/textview_amount"
        android:text="+" />

    <Button
        android:id="@+id/button_add"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/button_increase"
        android:layout_alignBottom="@+id/button_increase"
        android:layout_marginStart="8dp"
        android:layout_toEndOf="@+id/button_increase"
        android:text="add" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/textview_amount" />

</RelativeLayout>

grocery_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp">

    <TextView
        android:id="@+id/textview_amount_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="0"
        android:textSize="30sp" />

    <TextView
        android:id="@+id/textview_name_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:text="Empty Item"
        android:textSize="30sp" />

</LinearLayout>

GroceryContract.java

package com.example.application.grocerylist;

import android.provider.BaseColumns;

public class GroceryContract {

    private GroceryContract() {
    }

    public static final class GroceryEntry implements BaseColumns {
        public static final String TABLE_NAME = "groceryList";
        public static final String COLUMN_NAME = "name";
        public static final String COLUMN_AMOUNT = "amount";
        public static final String COLUMN_TIMESTAMP = "timestamp";
    }
}

GroceryDBHelper.java

package com.example.application.grocerylist;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

import com.example.application.grocerylist.GroceryContract.*;


public class GroceryDBHelper extends SQLiteOpenHelper {
    public static final String DATABASE_NAME = "grocerylist.db";
    public static final int DATABASE_VERSION = 1;

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

    @Override
    public void onCreate(SQLiteDatabase db) {
        final String SQL_CREATE_GROCERYLIST_TABLE = "CREATE TABLE " +
                GroceryEntry.TABLE_NAME + " (" +
                GroceryEntry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                GroceryEntry.COLUMN_NAME + " TEXT NOT NULL, " +
                GroceryEntry.COLUMN_AMOUNT + " INTEGER NOT NULL, " +
                GroceryEntry.COLUMN_TIMESTAMP + " TIMESTAMP DEFAULT CURRENT_TIMESTAMP" +
                ");";

        db.execSQL(SQL_CREATE_GROCERYLIST_TABLE);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("DROP TABLE IF EXISTS " + GroceryEntry.TABLE_NAME);
        onCreate(db);
    }
}
android Tags:Android, SQLite database

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