Book Image

Android Studio 2 Essentials - Second Edition

By : Belén Cruz Zapata
Book Image

Android Studio 2 Essentials - Second Edition

By: Belén Cruz Zapata

Overview of this book

Android Studio 2, the official IDE for Android application development, dramatically improves your workflow by letting you quickly see changes running on your device or emulator. It gives developers a unique platform by making app builds and deployment faster. This book will get you up and running with all the essential features of Android Studio 2 to optimize your development workflow. Starting off with the basic installation and configuration of Android Studio 2, this book will help you build a new project by showing you how to create a custom launcher icon and guiding you to choose your project. You will then gain an insight into the additional tools provided in Android Studio, namely the Software Development Kit (SDK) Manager, Android Virtual Device (AVD) Manager, and Javadoc. You’ll also see how to integrate Google Play Services in an Android project. Finally, you’ll become familiar with the Help section in Android Studio, which will enable you to search for support you might require in different scenarios.
Table of Contents (17 chapters)
Android Studio 2 Essentials Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Sign automatically in release mode


Apps are signed automatically when running in debug mode, since the debug key is automatically generated. If we try to run our app in release mode, the following error will be displayed because Android Studio does not know how to sign our app: Error: The apk for your currently selected variant (app-release-unsigned.apk) is not signed. Please specify a signing configuration for this variant (release).

We need to configure our build settings if we want to run our app in release mode.

Open the Project Structure settings by navigating to File | Project Structure.... Select your app in the Modules section and open the Signing tab. Click on the plus button to create a new signing configuration. Rename the configuration and type the data of your key store, as shown in the following screenshot:

Switch to the Build Types tab, in which the default two build types are listed: debug and release. Select release and choose the recently created configuration (releaseConfig...