How to cancel a JobIntentService

问题:

How can I cancel a JobIntentService? I see no methods to do so in the docs, apart maybe from the JobSheduler API and the Context#stopService(...) method, which I'm unsure if it's the right way.

回答1:

JobIntentService is only bringing IntentService to Android 8+ that is more strict about background services. It runs like old IntentServices on devices with older versions of Android.

IntentService has never been designed to be cancelled, hence the lack of any API to cancel a JobIntentService.

Therefore, JobIntenService should only be used for work that don't need to be cancelled. Note that JobIntentService can still be used for work that can fail, and consequently, be aborted.

Work that can be cancelled should be executed in either:

• An Activity (or its ViewModel) for short duration work
• A JobService (using Firebase Job Dispatcher or Job Scheduler if minSdk is 21)
• A custom foreground service

回答2:

Prior to Android 8.0, JobIntentService is implemented as an IntentService. IntentService does not stop or take any other requests through some intent action until its onHandleIntent method completes the previous request. stopService() won't be called until the task is finished.And it's called automatically when it is. That's a feature of IntentService But a similar question was already answered here referring to IntentServices, hope it helps.

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