How to Troubleshoot "My mac 64-bit" problem (cannot open simulator)

Children's shoes know that Xcode will display the appropriate simulator for developers to choose from, depending on the current SDK in the options bar next to the Run button, such as:

But sometimes the "My mac 64-bit" error is displayed, which is obviously not what we want, such as:

The main reason for this situation is that you opened another Mac computer copy of the project or other causes of the occurrence, then the solution here Himi:

Steps to resolve:

First close your Xcode, find the project directory where you found the solution to this problem, and then right-click on the "Show Package Contents" ***.xcodeproj file, such as:

In general, the package has the following 3 files:

1.project.pbxproj 2.project.xcworkspace 3.xcuserdata

Find the "xcuserdata" this culprit, the entire move to the trash, OK, reopen your project, the normal display can be used simulator;

How to Troubleshoot "My mac 64-bit" problem (cannot open simulator)