Running a task every few hours

问题:

I have a method that I need to run every few hours even if the user didn't reopen the app. What is the best way to go? Should I use the Timer class or Alarm manager? Thanks!

回答1:

You should use AlarmManager to schedule services for this. See this Vogella tutorial.

回答2:

Step 1: Define 'Service' class to define logic to be executed

Ste 2: Define BroadcastReceiver and add in manifest xml. This is responsible for calling 'Service' class to do the task.

May be you need add intent action <action android:name="android.intent.action.BOOT_COMPLETED"/> under in manifest xml

Step 3: Use 'AlarmManager' to schedule to repeat

couple links might help http://www.vogella.com/articles/AndroidServices/article.html#scheduleservice_scheduling

http://khurramitdeveloper.blogspot.in/2013/06/android-alarm-manager-to-start-service.html