Expo startLocationUpdatesAsync doesn't work on android 8.0 + when minimized - react-native

Hey I have a problem with expo latest TaskManager featur. I'm trying to implement background user locating while application is in background. Firstly, expo API background location works perfectly on Android Version 5.0 and 6.0. But on versions 7.0+, when i minimazie application gps service is paused. It's probably due to android battery saving. Do you guys know any workarounds?

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How to build iOS apps using react- native on window 10

I am new in react-native. I want to build an android and iOS application by using react-native. I used the Windows 10 to build the react-native project and it is ok when I run the android app using Android SDK or real device but cannot on iOS devices. I have researched this problem and know that I need to use macOS to run the iOS apps. Is it possible to build iOS apps using any iOS simulator on Windows 10?
for exporting ios apps you must have a MAC system(X-code) or you can do it in windows with VMvare that have a virtual Mac system ,and in next step you must have a developer account then other steps are simple :)
The best way to develop in react native if you did not have access to MAC OSX environment is to use EXPO as it will ensured the app could run on android and iOS.
The second option would be using private cloud Mac like MacStadium.

How to run background service in react native both ios and android

I'm try to create a Background service in React-native for both android & ios I'll try so many library but still I'll be not find batter way to develop background service.
Did you try with this way I think this will work on both iOS and android

Expo Android apk crashes when playing lottie animation

I recently updated expo clients (both android and ios) of my phone and only the android version crashed after trying to play lottie animation (using dangerzone). Animations work fine in ios and also it did work in android before i update the apk.
I dont get any error message when the app crash, i only get system message saying "app crashed". Anyone know how to fix this?

Titanium SDK 3.5 not adding Splash Screen for iPhone 5

I was using SDK3.4.1 and the build was fine for iPhone, I submitted it successfully on iTunes Connect using Application Loader, but since SDK 3.4.1 doesn't support 64bit it got rejected. I upgraded my sdk to 3.5.0 but this time although I have splash screen present for iPhone 5 (Default-568h#2x.png) but it's keep giving me error that the binary is not iPhone 5 optimized and the splash screen is missing. I'va cleaned, created new project and done everything but cannot solve this problem. Any Help?
Thank you

How can I see why titanium app crashes on Blackberry simulator

I do a Titanium application that woks on iOS and android. Now, I want to create the Blackberry version.
I've tried with a simple app and it's launched well at simulator, but when I've tried my app it doesn't work.
It launches splash screen and begins to load the elements, but I think the app crash because simulator returns to main screen, there isn't any alert (like on android when app stop unexpectedly), it only returns to main screen.
My problem is that I don't know what happen and I can't find any error logs...
I connect by telnet to the simulator, and there I can see the first traces of my app, but any error.
Do you know what can be happened? How can I know if I have an error? How can I know if my app has crashed?
Sorry, if it's an easy question, I'm newbie at Blackberry.
I'm using Titanium SDK 3.2.2 and Blackberry SDK 10.02
Thank you very much
I've created a new project (with Titanium SDK 3.1.3 instead of Titanium SDK 3.2.2) and copy all files there. I've tried to launch the app many times, and one of them, the app launches.
Maybe it was a computer or simulator problem.