Closed danielkboyer closed 3 years ago
danielkboyer
commented
3 years ago I was able to reproduce this error using the sample app provided. I am looking for a solution now, if I find one I will submit a pull request, my earliest hypothesis is that the updated xamarin forms has a problem with the library. Will test this now.
danielkboyer
commented
3 years ago I didn't find a fix but I believe I found the problem. I am using Xamarin.ios hot restart, and they have a known limitation with referencing static libraries. I recently started using Xamarin.Stripe.IOS and it is giving me the same problem. There might be a fix that can get this library working with xamarin hot restart but this is not a bug with this library.
Bug Information
FacebookClientManager.Initialize(app, options); 'Object not set to an instance of an object'
happens at runtime.
Version Number of Plugin: 2.21 Device Tested On: Iphone 12, using xamarin.hotrestart Simulator Tested On: none Version of VS: 4.8.04084
Version of Xamarin: 5.0.0.2083 Versions of other things you are using:
Steps to reproduce the Behavior
Follow the instructions for setup, run on ios device with Xamarin Hot Restart
Expected Behavior
The app should launch
Actual Behavior
The app crashes because of Initialization method
Code snippet
This is the line of code that crashes my project, I commented it out and everything ran smoothly (but I couldn't login through facebook) FacebookClientManager.Initialize(app, options);
Screenshotst
An error occurred: 'Object reference not set to an instance of an object.'. Callstack: ' at Plugin.FacebookClient.FacebookClientManager.Initialize (UIKit.UIApplication app, Foundation.NSDictionary options) <0x110893d00 + 0x0000e> in <1205be224660445f9710edd216b72dd4>:0 at Urfoodmobile.iOS.AppDelegate.FinishedLaunching (UIKit.UIApplication app, Foundation.NSDictionary options) [0x0002c] in C:\Users\dedaq\source\repos\FormApp\iOS\AppDelegate.cs:47 at (wrapper managed-to-native) UIKit.UIApplication.UIApplicationMain(int,string[],intptr,intptr) at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:86 at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x0000e] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:65 at Urfoodmobile.iOS.Application.Main (System.String[] args) [0x00001] in C:\Users\dedaq\source\repos\FormApp\iOS\Main.cs:17 at (wrapper managed-to-native) System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo,object,object[],System.Exception&) at System.Reflection.RuntimeMethodInfo.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x0006a] in /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/src/Xamarin.iOS/mcs/class/corlib/System.Reflection/RuntimeMethodInfo.cs:395 ' The app has been terminated.