Xamarin Android项目运行失败

Xamarin Android项目运行失败

错误信息：Build Failed: MonoDroid does not support running the previous version. Please ensure your solution builds before running or debugging it.

这是因为因为项目生成失败，并找不到之前编译的结果。这时，须要检查编译环境，并配置好运行环境，如模拟器、真机。确认环境正常后，从新编译便可。