Bug 57250 - Previewer bug, work perfect in emulator..
Summary: Previewer bug, work perfect in emulator..
Alias: None
Product: Visual Studio Extensions
Classification: Xamarin
Component: Xamarin.Forms Previewer ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Jérémie Laval
Depends on:
Reported: 2017-06-07 16:22 UTC by Stanley Broo
Modified: 2017-06-08 08:55 UTC (History)
5 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Stanley Broo 2017-06-07 16:22:43 UTC
Creating class loader with 20 projects

Creating LibraryClassLoader in shadow copy path C:\Users\stanley\AppData\Local\Temp\AndroidDesignerJars8415397788035289124
Setting id 1 on newly created ClassLoader

Trying to load class md5e940e1e778de0f856e343395a2f338c5.XFPageRendererView

mono.android.DesignerException: java.lang.NullPointerException
	at mono.android.DesignerException.fromThrowable(DesignerException.java:46)
	at mono.android.DesignerSession.checkRenderResultForError(DesignerSession.java:187)
	at mono.android.DesignerSession.load(DesignerSession.java:239)
	at mono.android.DesignerSession.processMessage(DesignerSession.java:702)
	at mono.android.MessageListener.executeMessage(MessageListener.java:88)
	at mono.android.MessageListener$Runner.run(MessageListener.java:44)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
	at android.preference.PreferenceManager.getDefaultSharedPreferencesName(PreferenceManager.java:498)
	at android.preference.PreferenceManager.getDefaultSharedPreferences(PreferenceManager.java:487)
	at md5b60ffeb829f638581ab2bb9b1a7f4f3f.PageRenderer.n_onAttachedToWindow(Native Method)
	at md5b60ffeb829f638581ab2bb9b1a7f4f3f.PageRenderer.onAttachedToWindow(PageRenderer.java:55)
	at android.view.View.dispatchAttachedToWindow(View.java:15395)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2953)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2960)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2960)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2960)
	at android.view.AttachInfo_Accessor.setAttachInfo(AttachInfo_Accessor.java:42)
	at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:333)
	at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:429)
	at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:368)
	at mono.android.DesignerSession.load(DesignerSession.java:233)
	... 4 more
Comment 1 Alan McGovern 2017-06-08 08:55:20 UTC
Jeremie, can this be made work in the previewer context or is just simply a limitation of layoutlib and google need to fix it?