1. 12/5/2018 4:31 AM
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2. What’s new for multi-tasking in UWP?
12/5/2018 4:31 AM
P4172
What’s new for multi-tasking in UWP?
Chris Cortes
Program Manager
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3. Multitasking and Background Activity
12/5/2018 4:31 AM
Multitasking and Background Activity
Background Task and Application Lifecycles
New Multitasking Scenarios
User Controls and Best Practices
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4. Process Lifecycle 12/5/2018 4:31 AM
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5. Background Task Lifetime
12/5/2018 4:31 AM
Background Task Lifetime
Ideal
Terminated
Canceled
Run()
Run()
Run()
Cancel()
Execution Time
Default Background Tasks
25s Running time
5s Canceled time
Separate Component
Separate Project
IBackgroundTask
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6. Application Lifecycle
12/5/2018 4:31 AM
Application Lifecycle
In-Process Introduced in the
Anniversary Update
App states
Not Running
Running
Suspended
App Callbacks
Launched/On Activated
Suspending/Resuming
EnteredBackground/LeavingBackground
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7. Background Scenarios 12/5/2018 4:31 AM
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8. Triggers Sensors Bluetooth Toasts Network System Trigger Local Data
12/5/2018 4:31 AM
Triggers
GattCharacteristicNotificationTrigger
GattServiceProviderTrigger
BluetoothLEAdvertisementWatcherTrigger
BluetoothLEAdvertisementPublisherTrigger
RfCommConnectionChangeTrigger
DeviceUseTrigger
DeviceConnectionTrigger
DeviceServicingTrigger
DeviceWatcherTrigger
Sensors
Bluetooth
ToastNotificationActionTrigger
ToastNotificationActionHistoryChangedTrigger
UserNotificationChangedTrigger
PushNotificationTrigger
SocketActivityTrigger
TimeTrigger
MaintenanceTrigger
Toasts
Network
UserAway
UserPresent
TimeZoneChange
ServicingComplete
PowerStateChange
NetworkStateChange
InternetAvailable
AppointmentStoreNotificationTrigger
ContactStoreNotificationTrigger
StoreNotificationTrigger
CachedFileUpdaterTrigger
Local Data
System Trigger
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9. 12/5/2018 4:31 AM
Trigger Demo
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10. Trigger Demo Recap Background Task Code in the Main App Project
12/5/2018 4:31 AM
Trigger Demo Recap
Background Task Code in the Main App Project
Background Activated
No Manifest Entry Required
Registration Groups in Creators Update
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11. Background Task Registration Group
12/5/2018 4:31 AM
Background Task Registration Group
const string MyTaskGroupId = "4F8904E0-3F25-9A0C-41D3-0305E82C3333";
const string MyTaskGroupDebugName = "My Task Group";
var group = BackgroundTaskRegistration.GetTaskGroup(MyTaskGroupId);
if (group == null) {
group = new BackgroundTaskRegistrationGroup(MyTaskGroupId, MyTaskGroupDebugName); }
var builder = new BackgroundTaskBuilder();
builder.Name = "Tasks Name";
builder.IsNetworkRequested = true;
builder.TaskEntryPoint = "Tasks.MyTask";
builder.SetTrigger(myTrigger));
builder.TaskGroup = group
builder.Register();
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12. Activity Sponsored Execution
12/5/2018 4:31 AM
Activity Sponsored Execution
Manifest Entry
<Capabilities>
<uap3:Capability Name="backgroundMediaPlayback" />
</Capabilities>
Press Play
var player = new MediaPlayer();
player.Source = MediaSource.CreateFromUri(new Uri("
player.Play();
No Registration Code, No Background Management
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13. Extended Execution Run While Minimized Run Longer while Suspending
12/5/2018 4:31 AM
Extended Execution
Run While Minimized
Location Tracking or Unspecified
Run without a time limit
Run Longer while Suspending
Saving Data
Revoked on a new activation
Ensure good Resource Usage
Time Limited on Battery
Accepted into Windows Store
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14. Enterprise Restricted Capability Device Management Policy
12/5/2018 4:31 AM
Enterprise
Restricted Capability
<Capabilities>
<rescap:Capability Name="extendedBackgroundTaskTime"/>
</Capabilities>
Device Management Policy
./Vendor/MSFT/Policy/Config/Privacy/LetAppsRunInBackground
./Vendor/MSFT/Policy/Config/Privacy/LetAppsRunInBackground_ForceAllowTheseApps
./Vendor/MSFT/Policy/Config/Privacy/LetAppsRunInBackground_ForceDenyTheseApps
./Vendor/MSFT/Policy/Config/Privacy/LetAppsRunInBackground_UserInControlOfTheseApps
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

15. 12/5/2018 4:31 AM
User Controls
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16. Privacy User in control Controls all triggers Controls Generic EE
12/5/2018 4:31 AM
Privacy
User in control
Controls all triggers
Controls Generic EE
Overridden by Group Policy
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17. Battery Usage Controls
12/5/2018 4:31 AM
Battery Usage Controls
Different UI per OS Edition
Same Group Policy
Same developer interface
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18. Respect User Control and Battery
12/5/2018 4:31 AM
Respect User Control and Battery
BackgroundAccessStatus backgroundStatus = await BackgroundExecutionManager.RequestAccessAsync();
AlwaysAllowed
AllowedSubjectToSystemPolicy
DeniedDueToSystemPolicy
DeniedByUser
BatteryStatus batteryStatus = Battery.AggregateBattery.GetReport().Status;
Charging
Discharging
Idle
NotPresent
EnergySaverStatus status = PowerManager.EnergySaverStatus;
Disabled, Off, On
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19. Extended Execution Demo
12/5/2018 4:31 AM
Extended Execution Demo
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20. Extended Execution Demo Recap
12/5/2018 4:31 AM
Extended Execution Demo Recap
Test Lifetime off of the Debugger
Extended Execution Session
Background Access Status, Battery Status
Direct User to Settings App if Needed
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21. Call to action Build any background scenario you can think of!
12/5/2018 4:31 AM
Call to action
Build any background scenario you can think of!
Check out other Build session recordings on Channel 9.
Use the Github samples and tutorials on the next slides.
Continue your education at Microsoft Virtual Academy online.
Provide Feedback on UserVoice.
#MSBuild
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22. 12/5/2018 4:31 AM
Related Sessions
B8012 – Tips, Tricks and Secrets: Building a Great UWP App for Windows 10
P4050 – Bridges to UWP for Retail Point-Of-Sale Application Developers
P4179 – Bluetooth GATT Server in Windows 10
#MSBuild
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23. 12/5/2018 4:31 AM
Github Samples
Out-Of-Proc Background Task:
In-Proc Background Activation:
Background Media Playback:
Extended Execution:
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24. Tutorials
App Lifecycle:
In-Proc Background Task:
Group Background Tasks:
Background Media Playback:
Extended Execution:
Best Background Practices:

25. 12/5/2018 4:31 AM
© Microsoft Corporation. All rights reserved. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.