Android uses jobscheduler to regularly push local notification instance code

After Android 5.0, jobservice and jobscheduler are provided to execute a task at a later point in time or when a specific condition is met. Using jobscheduler, we can push local notifications to improve the user retention rate of the app when users haven't used our app for a period of time. No more nonsense, code:

First, use the jobscheduler to schedule a job when the app's mainactivity starts. Note that in oncreate, we record the time when the user starts the app in the shared preference:

Then comes the notificationservice for pushing notifications. Here SharedPreferences are dagger2 dependency injection. If there is no dagger, you can directly use preferencemanager.getdefaultsharedpreferences:

Finally, we need to register our service in manifest and apply for relevant permissions:

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