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  • Save and Restore Android Activity State in Java

    If the previous few chapters have achieved their objective, it should now be clearer as to the importance of saving and restoring the state of a user interface at particular points in the lifetime of an activity. In this chapter, we will extend the example application created in A Java Android Activity State Changes Tutorial…

  • A Java Android Activity State Changes Tutorial

    The previous chapters have discussed in detail the different states and lifecycles of the activities comprising an Android application. In this chapter, we will put the theory of handling activity state changes into practice by creating an example application. The purpose of this example application is to provide a real-world demonstration of an activity as…

  • Handling Android Activity State Changes in Java

    Based on the information outlined in the chapter entitled Android App and Activity Lifecycles, it is now evident that the activities and fragments that make up an application pass through various different states during the application’s lifespan. The Android runtime system imposes the change from one state to the other and is, therefore, largely beyond…

  • Android View Binding in Java

    An essential part of developing Android apps involves the interaction between the code and the views that make up the user interface layouts. This chapter will look at the options available for gaining access to layout views in code, emphasizing an option known as view binding. Once the basics of view bindings have been covered,…

  • A Java Android Studio Example App

    The preceding chapters of this book have covered the steps necessary to configure an environment suitable for developing Android applications using the Android Studio IDE. Before moving on to slightly more advanced topics, now is a good time to validate that all required development packages are installed and functioning correctly. The best way to achieve…

  • Android Studio Giraffe Essentials Java Edition

  • An Android Studio Material Design 3 Theming and Dynamic Color Tutorial

    This chapter will show you how to create a new Material Design 3 theme using the Material Theme Builder tool and integrate it into an Android Studio project. The tutorial will also demonstrate how to add support for and test dynamic theme colors to an app. Creating the ThemeDemo Project Select the New Project option…

  • Working with Material Design 3 Theming in Android Studio

    The appearance of an Android app is intended to conform to a set of guidelines defined by Material Design. Google developed Material Design to provide a level of design consistency between different apps while also allowing app developers to include their own branding in terms of color, typography, and shape choices (a concept referred to…

  • An Android Studio In-App Purchasing Tutorial

    In the previous chapter, we explored how to integrate in-app purchasing into an Android project and also looked at some code samples that can be used when working on your own projects. This chapter will put this theory into practice by creating an example project demonstrating how to add a consumable in-app product to an…

  • An Android Studio Biometric Tutorial

    Touch sensors are now built into many Android devices to identify the user and provide access to the device and application functionality, such as in-app payment options using fingerprint recognition. Fingerprint recognition is just one of several authentication methods, including passwords, PINs, and, more recently, facial recognition. Although only a few Android devices currently on…