在xamarin.ios bluetooth-central不应该按照它应该行事

Question

I have xamarin forms application which uses BLE peripheral device to update database. I do not want to interrupt this process when entering into background. For that purpose i included in info.plist on iOS project this:

<key>UIBackgroundModes</key>
<array>
    <string>bluetooth-central</string>
</array>

which done nothing. I changed side 2 times in foreground, 5 times in background and 2 times in foreground again and i have that log:

3/16/2017 10:27:30 AM breadcrumb: Sucessfully started
3/16/2017 10:27:30 AM breadcrumb: Navigated to MainPage
3/16/2017 10:27:31 AM breadcrumb: Activated
3/16/2017 10:27:31 AM breadcrumb: StatisticsPage appeared
3/16/2017 10:27:50 AM breadcrumb: SideChanged
3/16/2017 10:28:42 AM breadcrumb: SideChanged
3/16/2017 10:28:45 AM breadcrumb: Enter background
3/16/2017 10:28:58 AM breadcrumb: EnterForeground
3/16/2017 10:28:59 AM breadcrumb: Activated
3/16/2017 10:29:04 AM breadcrumb: SideChanged
3/16/2017 10:29:08 AM breadcrumb: SideChanged

no side changes in background. What I forgot to do and where I should search?

Edit1: I made a sample app on xamarin.iOS and everything works fine. Looks like there is something in my code. But i will appreciate any help with this.

Edit2: I removed all code from my project until nothing left and it's still does not work! my broken app sample working app

Answer 1

请在info.plist条目中尝试使用bluetooth-peripheral作为您的值。