Mvvmcross: JASidePanels Slide Menu iOS Native Library Crash only on device

[polotto]

I tried to use JASidePanel, but its crashes on device. I thought that is a problem in the link configuration, so, I changed it but the problem was not solved.

Note: I flowed this example to create my project, but I using Xib file to create the login design screen: https://github.com/MvvmCross/MvvmCross-Samples/tree/master/XPlatformMenus

Steps to reproduce

1. Create a new MvvmCross project flowing the example XPlatformsMenus.

2. Update the MvvmCross packages.

3. Change the LoginView to a Xib ViewController.

4. Deploy the application on device (I using iPhone 5c in my tests).

Expected behavior

The application deploys without crashes on devices.

Actual behavior

The application deploys on iPhone Simulator, but crashes on devices.

Configuration (Tool/Version)

• Xamarin.iOS: 10.3.1,
• XCode: 8.2,
• MvvmCross: 4.4.0,
• MvvmCross.iOS.Support: 4.4.0,
• MvvmCross.iOS.Support.JASidePanels: 4.4.0,
• iPhone 5c: iOS 10.2

Platform: iOS.

[Cheesebaron]

Provide a reproducible sample and we'll take a look.

[polotto]

I created a project with a reproducible error that can be found in my gitHub:

https://github.com/angelopolotto/XMenuTestJASidePanels

Deploy the application on device to get the error.

[Cheesebaron]

Hmm. Strange. What I gather from the crash is that it cannot find the ObserveValue method which responds to one of the observers set when setting a ViewController in JASidePanels. Not sure exactly why this is, but could be due to how the JASidePanels.dll which someone, dunno who, made and we are using with the JASidePanels stuff.

@martijn00 do you know where this comes from? Maybe it needs to be recompiled or something.

[polotto]

@Cheesebaron I found these projects: https://github.com/gotosleep/JASidePanels and https://components.xamarin.com/view/jasidepanels . Are these projects?

[martijn00]

I have no idea. I usually use the SideBar menu. Maybe @jamsoft knows?

[jonathan-jd4software]

@angelopolotto @Cheesebaron @martijn00 I have stumbled onto the same issue, is there any progress on tying down the issue in the JASidePanels. Or a you suggesting that I need to rewrite to use SideBar? Thanks

[Cheesebaron]

We dont have the source for JASidePanels, I don't know where it comes from.

[jonathan-jd4software]

@Cheesebaron In that case, a re-write it is

[polotto]

@jonathan-jd4software I solve my problem replacing the JASidePanels with SideBar (https://github.com/MvvmCross/MvvmCross/tree/develop/MvvmCross-iOSSupport/MvvmCross.iOS.Support.XamarinSidebar). The migration isn't tough.
I followed this example: https://github.com/MvvmCross/MvvmCross/tree/develop/TestProjects/iOS-Support/XamarinSidebar .

[martijn00]

Removed in 5.0. See https://github.com/MvvmCross/MvvmCross/pull/1684