无法构建 Xamarin.Forms 项目

Question

构建时出现以下错误。我收到源代码的 "Build Succeeded" 消息，但显然在尝试输出源文件时出了点问题。有人有什么想法吗？

/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/Android/Xamarin.Android.Common.targets: 

Error: Tool exited with code: 1. Output: unknown output extension: obj/Debug/android/bin

usage:
  dx --dex [--debug] [--verbose] [--positions=<style>] [--no-locals]
  [--no-optimize] [--statistics] [--[no-]optimize-list=<file>] [--no-strict]
  [--keep-classes] [--output=<file>] [--dump-to=<file>] [--dump-width=<n>]
  [--dump-method=<name>[*]] [--verbose-dump] [--no-files] [--core-library]
  [--num-threads=<n>] [--incremental] [--force-jumbo]
  [<file>.class | <file>.{zip,jar,apk} | <directory>] 

...Convert a set of classfiles into a dex file, optionally embedded in a
    jar/zip. 

Output name must end with one of: .dex .jar .zip .apk. 

Positions
    options: none, important, lines.

  dx --annotool --annotation=<class> [--element=<element types>]
  [--print=<print types>]
  dx --dump [--debug] [--strict] [--bytes] [--optimize]
  [--basic-blocks | --rop-blocks | --ssa-blocks | --dot] [--ssa-step=<step>]
  [--width=<n>] [<file>.class | <file>.txt] ...
    Dump classfiles, or transformations thereof, in a human-oriented format.
  dx --find-usages <file.dex> <declaring type> <member>

Find references and declarations to a field or method.
    declaring type: a class name in internal form, like Ljava/lang/Object;
    member: a field or method name, like hashCode
  dx -J<option> ... <arguments, in one of the above forms>
    Pass VM-specific options to the virtual machine that runs dx.
  dx --version
    Print the version of this tool (1.7).
  dx --help
    Print this message.
 (Zint.AddIt.Forms.Droid)

Answer 1

在 Xamarin Studio 下 -> 首选项 -> 项目 -> SDK 位置 -> Andorid 指向一个目录，我不再使用该目录进行更新的 SDK 更新。将其更改为指向正确的 SDK 目录并构建成功。

无法构建 Xamarin.Forms 项目

Can't build Xamarin.Forms project

xamarin.android

xamarin