I'm testing out Xamarin.Android in Visual Studio 2010 and have noticed that I have no Android Intellisense when I'm working in an Android Layout (.axml) file. However, I do get Android Intellisense when I'm working in a .cs file.
Example:
Here is a screenshot of my Main.axml file that lives in my Layout directory. Notice how the intellisense doesn't contain anything within the Android namespace.
What do I need to do to get intellisense to display the Android namespace in a .axml file?
Kannan Balasubramanian has posted an answer that worked for me (Binary Bits)
Here's Kannan's solution:
Most of the people who work with Xamarin’s Mono for Android in Visual Studio 2012 face a bug where Intellisense doesn’t work for AXML in source view.
One of the fix which worked for me is mentioned below.
- Launch Visual Studio 2012
- Open a solution with .AXML file in it
- Now XML main menu should be visible on top
- Open “Schemas…” menu
- Sort by “File Name” column and see if “android-layout-xml” and schemas.android.com.apk.res.android” are there. If found, skip to step 13
- If not found, go to “Program Files” if 32-bit system or “Program Files (x86)” if 64-bit system.
- Then go to “\MSBuild\Novell” or “\MSBuild\Xamarin\Android” You should be able to see 2 files “android-layout-xml.xsd” and “schemas.android.com.apk.res.android.xsd”
- Copy these 2 files to “\Microsoft Visual Studio 11.0\Xml\Schemas”
- Again open the “Schemas…” menu as mentioned in steps 3&4
- Now click “Add…” button and add these 2 files which should be located as mentioned in step 7 & 8
- Now restart visual studio and the XML editor for design layout should work fine with Intellisense
- From step 5….
- If above steps don’t work, then close the Visual Studio 2012.
- Now open “Developer command prompt for VS2012″ under Windows programs menu.
- Type “Devenv /ResetSettings” without quotes.
- Launch Visual Studio 2012 and see if Intellisense works.
- If still not working, better go to Xamarin forums and post there.
I just installed the latest release Xamarin.Android 6.0.1 – this may have been resolved in this release
来源：https://stackoverflow.com/questions/17245308/xamarin-android-intellisense-not-working-in-visual-studio-2010