Book Image

Mastering Android Application Development

By : Antonio Pachon
Book Image

Mastering Android Application Development

By: Antonio Pachon

Overview of this book

There are millions of Android apps out there for people to download – how do you make sure yours has the edge? It’s not always about innovation and ideas – the most successful apps are those that are able to satisfy customer demands – they’re the ones that look the best, the fastest, and the easiest and most intuitive to use. This book shows you how to create Android applications that do precisely that – it has been designed help you consider and answer those questions throughout the development process, so you can create applications that stand out against the crowd. Learn how to create exemplary UIs that contribute to a satisfying user experience through the lens of Material Design, and explore how to harness the range of features within the Android SDK to help you. Dive deeper into complex programming concepts and discover how to leverage concurrency and navigate memory management and image handling. You’ll also find further guidance on testing and debugging so you can guarantee that your application is reliable and robust for users. Beyond this you’ll find out how to extend your app and add greater functionality, including notifications, location services, adverts and app billing (essential if you want to properly monetize your creation!). To make sure you have confidence at every stage in the process, the book also shows you how to release your app to the Play store – to make sure your maximising your efforts to create a popular Android application!
Table of Contents (19 chapters)
Mastering Android Application Development
About the Author
About the Reviewers

Logs and the debug mode

We couldn't finish the book without mentioning logs and how to debug to solve problems while developing. Developing in Android can be more than just copying and pasting from Stack Overflow if you know how to solve your own problems.

The debug mode and logs are mechanisms used to help the developer identify where the problems are. With time, every developer improves and uses these techniques less frequently, but at the beginning, it's quite common to have an app full of logs. We don't want users to be able to see the log when the app is released, and we don't want to remove logs manually and then add them again when we release a new version. We will take a look at how to avoid this.

Working with logs

The log class is used to print out messages and errors, which we can read in real time using LogCat. This is an example of how to log a message:

Log.i("MyActivity", "Example of an info log");

The Log class has five methods, and they are used to have a different level of priority...