Xamarin中Design与Source标签不显示问题求助

Hey there! As a fellow Xamarin developer, I know how frustrating it is when the Design and Source tabs go missing for your AXML layout files—let’s walk through some tried-and-true fixes to get them back:

• Update Visual Studio and Xamarin Components
  Outdated versions often have bugs with the Android Designer. Head to Tools -> Get Tools and Features, open the Visual Studio Installer, and make sure the Mobile development with .NET workload is fully updated. Restart Visual Studio after any updates finish.

• Clean & Rebuild Your Solution
  Cached build files can sometimes break the designer connection. Right-click your solution in the Solution Explorer, select Clean Solution, wait for it to finish, then select Rebuild Solution. Try opening your AXML file again afterward.

• Reset Visual Studio Settings
  Corrupted settings might be causing the issue. Go to Tools -> Import and Export Settings -> Reset all settings, choose No, just reset settings, overwriting my current settings, pick a default settings collection, and restart VS once done.

• Verify AXML File Association
  Sometimes the file gets linked to the wrong editor. Right-click your AXML file, select Open With..., choose Android Designer from the list, click Set as Default, then open the file again.

• Double-Check Android Designer Enablement
  Make sure the designer isn’t disabled at the Xamarin level: Go to Tools -> Options -> Xamarin -> Android Settings and confirm the Enable Android Designer checkbox is ticked. Restart VS after changing this setting.

• Check SDK Compatibility
  Mismatched .NET and Android SDK versions can break the designer. Open Tools -> Android -> Android SDK Manager, go to the SDK Tools tab, and ensure Android SDK Build Tools and other related tools are up to date. Also, confirm your project’s target Android version matches an installed SDK.

If none of these work, try creating a brand new Xamarin Android project and add a simple AXML layout file. If the Design/Source tabs show up there, the issue is likely specific to your existing project—you might need to compare project settings or recreate the problematic AXML file from scratch.

内容的提问来源于stack exchange，提问作者khoi