Answers

• robbit CNMember Xamurai

  November 2017

  Hi ,@NguyenLiem
  In Android you can use the AlarmManager( under Android 4.4) or JobSchedulerService ( above Android 5.0) or Timer (java Api). Maybe the FCM will help you.
  If there is an task auto run every 15 min , the app should be alive all the time . In android it can't be achieved , because it will consumes electricity very fast . Google doesn't advocate doing that.

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• Liêm_Nguyễn USMember ✭✭✭✭

  November 2017 edited November 2017

  @robbit said:
  Hi ,@NguyenLiem
  In Android you can use the AlarmManager( under Android 4.4) or JobSchedulerService ( above Android 5.0) or Timer (java Api). Maybe the FCM will help you.
  If there is an task auto run every 15 min , the app should be alive all the time . In android it can't be achieved , because it will consumes electricity very fast . Google doesn't advocate doing that.

  I'm creating app for my company, In my app need 2 feature:
  1. Send location to server every 15min (Or all time if can)
  2. Send notification when server have new records of data.
  Please suggest me the best way to do this!
  Thank you!

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• Charwaka INMember ✭✭✭✭✭

  November 2017

  Hi @NguyenLiem

  Please use following code

  Device.StartTimer(TimeSpan.FromMinutes(15),() => {
  
                  Task.Run(async () =>
                  {
  
  
               //Write the method you want to run Here
  
                  });
                                return true; //use this to run continuously 
                                return false; //to stop running continuously 
  
              });
  
  Make sure you are properly handling **UI Thread**
  

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• NMackay GBInsider, University admin

  November 2017

  http://arteksoftware.com/backgrounding-with-xamarin-forms/

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• Liêm_Nguyễn USMember ✭✭✭✭

  November 2017

  @Charwaka said:
  Hi @NguyenLiem

  Please use following code

  Device.StartTimer(TimeSpan.FromMinutes(15),() => {
  
                  Task.Run(async () =>
                  {
  
                       
               //Write the method you want to run Here
                          
                  });
                                return true; //use this to run continuously 
                                return false; //to stop running continuously 
  
              });
  
  Make sure you are properly handling **UI Thread**
  

  Will it run without open app?

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• Charwaka INMember ✭✭✭✭✭

  November 2017

  Hi > @NMackay said:

  http://arteksoftware.com/backgrounding-with-xamarin-forms/

  Use this code to run without even app open

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• Liêm_Nguyễn USMember ✭✭✭✭

  November 2017

  @Charwaka said:
  Hi > @NMackay said:

  http://arteksoftware.com/backgrounding-with-xamarin-forms/

  Use this code to run without even app open

  I have seen this sample.
  But I'm sorry, my english is terrible, I can not complete understand it.
  Can you help explain in every row of code, thank you!

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• GeorgeCeaserJr USMember ✭✭

  June 10

  @NMackay said:
  http://arteksoftware.com/backgrounding-with-xamarin-forms/

  This link is very old and no longer works in Xamarin Forms. Is there an updated version or even an updated sample that you know of?

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• NMackay GBInsider, University admin

  June 10

  https://docs.microsoft.com/en-us/xamarin/android/app-fundamentals/services/
  https://docs.microsoft.com/en-us/xamarin/ios/app-fundamentals/backgrounding/introduction-to-backgrounding-in-ios

  Try referring to the official documentation, it's very good.

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• NMackay GBInsider, University admin

  June 10

  Never used this but might give you some ideas, I'd check the lines provided to make sure your aware of each platforms limitations, this pluggin will have the same limitations, for old Android API levels, you'll need to see what's supported etc

  https://github.com/winstongubantes/MatchaBackgroundService

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