[BUG] iOS freeze on startup

[albilaga]

Describe the bug
In iOS when want to get value from BlobCacbe in startup it always freeze or if we are using await or subscribe iOS is always faster to open first page. It become a problem when we want to check value fromBlobCache and decide which page to opened first

Steps To Reproduce

1. Open https://github.com/albilaga/akavachetest
2. Run for iOS
3. It always freeze on startup and can't continue.

Expected behavior
It should can get value from BlobCache

Environment

• OS: iOS
• Device: test on iPhone Simulator
• Version: Akavache 6.9.10

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[PureWeen]

From what I remember it's a little tricky depending on async things during startup. If you use Result that's going to most likely lock a thread and freeze the application.

Someone might know a clever way to do this with Akavache but you might look into using a simpler storage point to pivot on for startup. Something like

https://docs.microsoft.com/en-us/xamarin/essentials/preferences

It's a synchronous API that just grabs a quick value from local storage. You could use that to store where you will want a user to go and then use akavache for any additional data you want loaded.

Xamarin.Essentials: Preferences - Xamarin

This document describes the Preferences class in Xamarin.Essentials, which saves application preferences in a key/value store. It discusses how to use the class and the types of data that can be stored.

[albilaga]

Yeah we change that to using Preferences to store IsLogin state. But this means we create another property that we actually can rely on if AccessToken is empty or not. And we can't save AccessToken on Preferences for that.

[EmilAlipiev]

I think that i have posted quite detailed question somewhere regarding that. Akavache doesnt work on App start. You can use Xamarin.Essentials Preferences as you said. thats what i am doing. Akavache more convenient for complex json objects

[EmilAlipiev]

just found it here #392