Example Analysis of Service in Android

This article mainly introduces the example analysis of Service in Android, which has a certain reference value, and interested friends can refer to it. I hope you will gain a lot after reading this article.

Service

There are two types of Service:

The local service, which belongs to the same application, is started by startService or bound and obtained by bindService. If you just want to set up a service to run in the background, you can directly startService. If you need to pass values or operations to each other, you should use bindService.

Remote services (between different applications) that bind and get proxy objects through bindService.

The corresponding life cycle is as follows:

Context.startService ()-> onCreate ()-> onStartCommand ()-> Service running-- call context.stopService ()-> onDestroy () context.bindService ()-> onCreate ()-> onBind ()-> Service running-- call > onUnbind ()-> onDestroy ()

Be careful

Service runs on main threads by default, so if you need to perform time-consuming operations in Service (operations on large files, copies of databases, network requests, file downloads, etc.), they should be done in child threads.

! The special case is that Service specifies in the manifest file to run in other processes.

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