Microsoft Visual Studio 没有为 Xamarin 项目显示任何 android 模拟器或物理设备

Question

I have a xamarin project and i want to debug it, but visual studio doesn't show any emulator or physical device. this is the menu

I wanted to restart adb from tools > android but it's disabled. but when I open a non xamarin project (for example a web porject) this options is enabled.

I can see my device in cmd with command adb devices and in android studio, every thing is fine and I can deploy some java application to my phone.
do you have Any idea?

Update
I created new project and in this new project, every thing is fine and I can debug with my phone or emulators.
but in my existing project which I'm currently working on, there is no device in list.

Answer 1

我刚刚在使用 vs 2019 时遇到了这个问题，要解决这个问题，手动删除obj和bin文件夹重新启动 vs，仅此而已:)