Remember that if you do use a service, it still runs in your application's main thread byĭefault, so you should still create a new thread within the service if it performs intensive or Threading on Android document for more information about Or Kotlin coroutines instead of the traditional For example, if you want to play some music, but only while your activity is running,Īlso consider using thread pools and executors from the package With your application, you should instead create a new thread in the context of another applicationĬomponent. If you must perform work outside of your main thread, but only while the user is interacting Interacting with your application, so you should create a service only if that is what you Choosing between a service and a threadĪ service is simply a component that can run in the background, even when the user is not This is discussed more in the section about Declaring the service in the The service as private in the manifest file and block access from other applications. Regardless of whether your service is started, bound, or both, any application componentĬan use the service (even from a separate application) in the same way that any component can useĪn activity-by starting it with an Intent. It's simply a matter of whether you implement a couple of callback methods: onStartCommand() to allow components to start it and onBind() to allow binding. Your service can work both ways-it can be started (to run indefinitely) and also allowīinding. Service at once, but when all of them unbind, the service is destroyed.Īlthough this documentation generally discusses started and bound services separately, A bound service runs onlyĪs long as another application component is bound to it. Interface that allows components to interact with the service, send requests, receive results,Īnd even do so across processes with interprocess communication (IPC). In mostīound A service is bound when an application component binds to it by calling bindService(). Services when the app itself isn't in the foreground. Note: If your app targets API level 26 or higher, the system imposes restrictions on running background That would usually be a background service. For example, if an app used a service to compact its storage, WorkManager is preferable to using foreground services directly.īackground A background service performs an operation that isn't directly noticed by These jobs as foreground services if needed. WorkManager API offers a flexible way of scheduling tasks, and is This notification cannotīe dismissed unless the service is either stopped or removed from the Users are actively aware that the service is running. When you use a foreground service, you must display a notification so that Foreground services must display a Notification.įoreground services continue running even when the user isn't interacting For example, an audio app would use a foreground service to play anĪudio track. These are the three different types of services: ForegroundĪ foreground service performs some operation that is noticeable to the You should run any blocking operations onĪ separate thread within the service to avoid Application Run in a separate process unless you specify otherwise. Process the service does not create its own thread and does not Music, perform file I/O, or interact with a content provider, all from the background.Ĭaution: A service runs in the main thread of its hosting For example, a service can handle network transactions, play Additionally, a component can bind to a service to interact with it and even perform Started, a service might continue running for some time, even after the user switches to anotherĪpplication. Long-running operations in the background.
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