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I have the following situation:
I have a Service that checks periodically for new data over the internet,
The user might want to request an immediate update...
...in that case I use a Messenger to request the Service to look for new data
Here is the problem:
the user is notified that a request is ongoing, but it might take a while, can be unsuccessful, could never return...
currently I get a message (using a Messenger) back from the Service to the Activity informing of the result of the request, or, if I get no message, in x seconds I inform the user that the request was unsuccessful.
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We already know that we can communicate with Service from activity just by using method startService() and passing Intent to the argument in the method, or either we can use bindService() to bind the service to the activity with argument Intent.
You can start a service from an activity or other application component by passing an Intent to startService() or startForegroundService() . The Android system calls the service's onStartCommand() method and passes it the Intent , which specifies which service to start.
A bound service is the server in a client-server interface. It allows components (such as activities) to bind to the service, send requests, receive responses, and perform interprocess communication (IPC).
Services are a unique component in Android that allows an application to run in the background to execute long-running operation activities, on the other hand, an activity, like a window or a frame in Java, represents a single screen with a user interface.
You've got the basics, so not much else to recommend. I'll just show you a few alternatives:
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