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Additionally, a component can bind to a service to interact with it and even perform interprocess communication (IPC).įor example, a service can handle network transactions, play music, perform file I/O, or interact with a content provider, all from the background. Another application component can start a service, and it continues to run in the background even if the user switches to another application.
#Intent android studio starting a service code
Modify the code in the MyIntentService.kt file, therefore, so that it reads as follows: package Service is an application component that can perform long-running operations in the background, and it does not provide a user interface. Second, the class must override the onHandleIntent() method.
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First, a constructor for the class must be implemented which calls the superclass constructor, passing through the class name of the service. When subclassing the IntentService class, there are two rules that must be followed. The class needs to be modified so that it subclasses the IntentService class. Review the new MyIntentService.kt file in the Android Studio editor where it should read as follows: package Finally, click on the OK button to create the new class. Within the resulting Create New Class dialog, name the new class MyIntentService and select Class from the Kind menu. As outlined in the preceding chapter (“An Overview of Android Started and Bound Services”), the purpose of the IntentService class is to provide the developer with a convenient mechanism for creating services that perform tasks asynchronously within a separate thread from the calling application.Īdd a new class to the project by right-clicking on the package name located under app -> java in the Project tool window and selecting the New -> Kotlin File/Class menu option. The first type of service to be demonstrated in this tutorial is to be based on the IntentService class.
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Report this ad Creating the Service Classīefore writing any code, the first step is to add a new class to the project to contain the service. Having covered started services in this chapter, the next chapter, entitled “Android Local Bound Services – A Worked Example”, will focus on the implementation of bound services and client-service communication. Finally, the steps involved in performing tasks within a separate thread when using the Service class will be implemented. This example will subsequently be extended to demonstrate the use of the Service class. In the first instance, the service will be created using the IntentService class. Within this chapter, a sample application will be created and used as the basis for implementing an Android service.
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In order to reinforce the information in the previous chapter, this chapter will work through an Android Studio tutorial intended to gradually introduce the concepts of started service implementation. The previous chapter covered a considerable amount of information relating to Android services and, at this point, the concept of services may seem somewhat overwhelming. Purchase the fully updated Android Studio Dolphin Kotlin Edition of this publication in eBook ($29.99) formatĪndroid Studio Dolphin Essentials - Kotlin Edition eBook (PDF/ePub, Kindle) edition contains 93 chapters and over 820 pages You are reading a sample chapter from the Android Studio 3.0 / Android 8 Edition book.