#XAMARIN BUGZILLA HOW TO#
#XAMARIN BUGZILLA ANDROID#
#XAMARIN BUGZILLA CODE#

Unfortunately, Android hardware only allows 51200 global references to exist at a time.īut it isn’t a simple hard limit because you have created too many objects. Xamarin.Android uses Android global references to provide mappings between Java instances and the associated managed instances. The crash report in Google Play has this message: JNI ERROR (app bug): weak global reference table overflow (max=51200) However, this issue may only exhibit in non-trivial apps with a complex user interface. Xamarin.Android will hard-crash your app unless you call GC.Collect on a regular basis.

#XAMARIN BUGZILLA CODE#

Otherwise, you will need to mitigate this issue everywhere in your code to avoid out-of-memory crashing of your Xamarin.iOS app. The good news is this problem is handled internal to the Invention iOS implementation. var TextField = new UITextField() TextField.EditingChanged += (Sender, Event) => This seems to be enough to cause a memory leak. The delegate capture implicitly takes references to TextField and LocalState. In the below example, TextField is a local variable and LocalState is a field on long-living object. Attach to your Xamarin.iOS app and use the memory leak profiling to detect leaks. Instruments is how you find leaks open it from the Xcode > Open Developer Tool > Instruments menu. It is necessary to use weak reference wrappers to prevent anonymous delegate capture from swallowing up references to everything. Xamarin.iOS leaks memory when you have a memory cycle that twice crosses the managed/native boundary. However, there are implementation flaws which must be mitigated to successfully build non-trivial apps. The design is an impressive feat of engineering and works well in practice. It works because each managed instance is connected to a corresponding native instance. So I was thinking of defining an Interface which correspond to those in HttpClient, which the platform specific ones implement and use MvvmCross's IoC stuff to inject the platform specific one.Xamarin can be thought of as a C# wrapper of the Android Java SDK and the iOS Objective-C SDK. My plan is to wrap it up in a MvvmCross plugin, however not all PCL profiles have HttpClient, if any of them. That is kind of what I was thinking about. I'll add some patterns to the Readme file discussion #5

#XAMARIN BUGZILLA HOW TO#

As to how to use it in a PCL, the easiest way is just to define a settable Func global in your PCL that creates an HttpClient (with the initial value just creating the default HttpClient), then replace it in your app with one that creates a Modern one. ModernHttpClient shouldn't be affected by this bug. Reply to this email directly or view it on GitHub What I did was subclass them all to the same name ( NativeNetoworking),Īnd used preprocessors to change out the library depending on OS. Have to think a bit about how to use it with a PCL though :) discussion #3 AFNetworking is really solid, and doesn't suffer from the managed component problems of HttpClient.

The socket leaking was one of the reasons I adopted the AFNetworking component with ModernHttpClient. Is ModernHttpClient affected in the same way? discussion #1 Any idea how this plays along with #15135? I've been having issues with the version of HttpClient that comes in Mono because sockets are not closed correctly and in some cases result in a NameResolutionError.

Xamarin bugzilla