xamarin - How to use a Custom iOS View(located in a referenced Class Library) in an Interface Builder file? -

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i have 2 projects. first 1 ios-app referencing class library target framework xamarin.ios. in class library implemented customview inherits uiview. registered "register" attribute.

so in interface designer prefilled information use class custom class after dragged uiview viewcontroller. when run app following information: 

"unknown class mycustomview in interface builder file."

if move customview class library project first project run expected.

does know how use customview, located in referenced class library, in interface builder file?

i don't think it's possible register accross project boundaries. in tests, when use exact same namespace, still end error.

what is possible, on other hand, use proxy class , make use of inheritance bring desired behaviour proxy.

basically, boils down this:

1) in library, define custom uiview , implement behaviour want share:

public class mycustomuiview : uiview {     public mycustomuiview(intptr ptr) : base (ptr)     {     }      public override void awakefromnib()     {         // beautiful here...         addsubview(new uilabel(new cgrect(0,0,200,30)) { text = "i live in library"});         backgroundcolor = uicolor.green;     } }

note don't registerthis class, because won't work anyway.

2) in app project, open storyboard in interface designer or xcode , assign new name placeholder uiview. in case, chose mycustomuiviewproxy. xamarin studio create 2 files you: mycustomuiviewproxy.cs , mycustomuiviewproxy2.designer.cs. note in designer.cs file, xamarin automatically registered proxy class.

3) have use inheritance, make proxy act original: in mycustomuiviewproxy.cs, change base class uiview mycustomuiview, , we're go:

partial class mycustomuiviewproxy : mycustomuiview {     public mycustomuiviewproxy (intptr handle) : base (handle)     {     } }

that's it:

enter image description here


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