Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Android Programming for Beginners
  • Toc
  • feedback
Android Programming for Beginners

Android Programming for Beginners

By : John Horton, Mayani
4.1 (47)
close
Android Programming for Beginners

Android Programming for Beginners

4.1 (47)
By: John Horton, Mayani

Overview of this book

Android is the most popular OS in the world. There are millions of devices accessing tens of thousands of applications. It is many people's entry point into the world of technology; it is an operating system for everyone. Despite this, the entry-fee to actually make Android applications is usually a computer science degree, or five years’ worth of Java experience. Android Programming for Beginners will be your companion to create Android applications from scratch—whether you’re looking to start your programming career, make an application for work, be reintroduced to mobile development, or are just looking to program for fun. We will introduce you to all the fundamental concepts of programming in an Android context, from the Java basics to working with the Android API. All examples are created from within Android Studio, the official Android development environment that helps supercharge your application development process. After this crash-course, we’ll dive deeper into Android programming and you’ll learn how to create applications with a professional-standard UI through fragments, make location-aware apps with Google Maps integration, and store your user’s data with SQLite. In addition, you’ll see how to make your apps multilingual, capture images from a device’s camera, and work with graphics, sound, and animations too. By the end of this book, you’ll be ready to start building your own custom applications in Android and Java.
Table of Contents (32 chapters)
close
31
Index

Handling the SQLite database

Create a new class called DataManager. We need an SQLiteDatabase object and a whole bunch of final string members for the table and column names.

All the code that we will add first to our DataManager is straightforward, but it is worth pointing out that we will actually have two tables in this database. One called wis_table_photos will have a column for each of the member variables of our Photo class.

Another called wis_table_tags will have just two columns, autoincrement _ID and a tag column.

The wis_table_photos table will have a row of data for each and every photo the user takes. The tags column will only have a row for each new/unique tag that the user enters. So, if the user has more than one photo with the "Barbados" or "2016" tag, it will only appear once in the wis_table_tags table but will appear with each and every photo that uses it in the wis_table_photos table.

This way, it will be possible to show the user a list of all the unique...

Unlock full access

Continue reading for free

A Packt free trial gives you instant online access to our library of over 7000 practical eBooks and videos, constantly updated with the latest in tech
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete