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So far we've seen an activity a content provider and a broadcast receiver.
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Now we're going to look at a service so here you're probably familiar with services from other operating
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systems. The concept is similar here you usually use a service when you want to do a long task in the
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background or you want to expose features of your app in the background.
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We won't go into too much detail here but we will show a basic service and how to define it. So let's
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add a class called my service default settings extend service alt and enter to implement methods and
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here you can see it created the unbind method.
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So just as the other components we need to add this service to the components in the manifest, so service
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Android colon name equals my service let's give it an icon Android colon icon equals drawable I see
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launcher background and a label Android colon label equals string app name OK.
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So we just defined a service.
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Now if you remember we had the lifecycle of an activity, a service has a different lifecycle actually.
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There are two options depending on how they were launched so here for example you have when it started
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with the start command and here with on bind then there is the service running. The unbind
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in the case of bind and I'm destroying over here for both so just like that we have our service defined
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in our app but it doesn't do anything yet.