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Learning Android Application Development

Learning Android Application Development

By : Ràfols Montane, Dawson
2.7 (3)
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Learning Android Application Development

Learning Android Application Development

2.7 (3)
By: Ràfols Montane, Dawson

Overview of this book

The mobile app market is huge. But where do you start? And how you can deliver something that takes Google Play by storm? This guide is the perfect route into Android app development – while it’s easy for new apps to sink without a trace, we’ll give you the best chance of success with practical and actionable guidance that will unlock your creativity and help you put the principles of Android development into practice. From the fundamentals and getting your project started to publishing your app to a huge market of potential customers, follow this guide to become a confident, creative and reliable mobile developer. Get to grips with new components in Android 7 such as RecyclerView, and find out how to take advantage of automated testing, and, of course, much, much more. What are you waiting for? There’s never been a better time – or a better way – to get into Android app development.
Table of Contents (11 chapters)
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SQLite


We have seen how to store key-value data in the SharedPreferences class and more complex data in the form of files in either internal or external storage. But, if we want to store structured data, we should go for a database-like storage option. Android provides us with an implementation of SQLite we can use to store and query data.

Note

More information about SQLite is available at https://www.sqlite.org/. For more information on the SQLite applied to Android, refer to http://developer.android.com/training/basics/data-storage/databases.html.

Schema and contract definition

As a good practice, it is recommended that you define your database structure in a contract class. Doing it this way will make things very easy, for example, changing a column name and propagating all the changes to everywhere the database is used.

In addition to this, if we implement the BaseColumns interface, it will automatically add an _ID field, which we can use as the primary  autoincrement key.

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