Category: Kotlin

As technology evolves, the traditional distinction between web and mobile content is beginning to blur. One area where this is particularly true is the growing popularity of progressive web apps, where web apps look and behave much like traditional mobile apps. Another trend involves making the content within mobile apps discoverable through web searches and…

As we have seen in the preceding chapters, the Android Printing framework makes it relatively easy to build printing support into applications as long as the content is in the form of an image or HTML markup. More advanced printing requirements can be met by using the custom document printing feature of the Printing framework.…

As outlined in the previous chapter, entitled “Printing with the Android Printing Framework”, the Android Printing framework can print both web pages and dynamically created HTML content. While there is much similarity between these two approaches to printing, there are also some subtle differences that need to be considered. This chapter will work through the…

Android Printing Framework is used to print content from within Android applications. While subsequent chapters will explore in more detail the options for adding printing support to your applications, this chapter will focus on the various printing options now available in Android and the steps involved in enabling those options. The chapter will then provide…

When Google introduced a map service many years ago, it is hard to say whether or not they ever anticipated having a version available for integration into mobile applications. When the first web-based version of what would eventually be called Google Maps was introduced in 2005, the iPhone had yet to ignite the smartphone revolution,…

Direct reply is an Android feature that allows the user to enter text into a notification and send it to the app associated with that notification. This allows the user to reply to a message in the notification without launching an activity within the app. This chapter will build on the knowledge gained in the…

Notifications provide a way for an app to convey a message to the user when the app is either not running or is currently in the background. For example, a messaging app might notify the user that a new message has arrived from a contact. Notifications can be categorized as being either local or remote.…

This chapter will provide an overview of the MediaRecorder class and explain how this class can be used to record audio or video. The use of the MediaPlayer class to play back audio will also be covered. Having covered the basics, an example application will be created to demonstrate these techniques. In addition to looking…

In several of the example projects created in preceding chapters, changes have been made to the AndroidManifest.xml file to request permission for the app to perform a specific task. In a couple of instances, for example, internet access permission has been requested to allow the app to download and display web pages. In each case…

Following the previous chapters, this chapter will take the existing VideoPlayer project and enhance it to add Picture-in-Picture support, including detecting PiP mode changes and adding a PiP action designed to display information about the currently running video. Adding Picture-in-Picture Support to the Manifest The first step in adding PiP support to an Android app…