在Xamarin.Forms中创建新项目时出现错误

Question

I have just installed Xamarin and create simple new project. After just creation of project I am getting error like:

What is the problem?

Answer 1

You have to change the target framework for compile to “Android 7.1(Nougat)”.

Here are Steps to change the target compile framework : Right Click on Android Project -> Properties

Current Android application properties(Compile using Android 6.0)

Change Compile Android Version to Android 7.1 (Nougat)

When Change the target compilation version of Android , Visual Studio will ask you to restart the project to configure itself… "Yes" to close and reopen , after the reboot go to NuGet package manager to update Android packages and Select Android Packages v.25.3.1.. when the update ends Re-Build the project