Xcode creates a new project, and the simulator frequently pops up when running. "x x x" comes from an unidentified developer and is different from the previously opened version. Are you sure you want to open it? As shown below:
This is a bit different from installing applications on a mac. If you encounter this problem when installing applications on a mac, you only need to go to "Settings" --> "Privacy and Security" --> "AppStore and North-approved development Set "Medium"/"Any Source" to agree.
I am developing with Xocde here, and it will pop up every time I run it (PS, if you think about it later, it is right, every time you open it, it is equivalent to installing the app on the simulator every time, so it is reasonable for this pop-up window to pop up every time). I checked the reply from the official website: as shown below, there is the words "App under development that has not been registered with Apple". The final guess is that the new project created by Xcode does not have Team set up.
Solution:
Just select the certificate in the Team of Signing&Capabilities (the prerequisite is that you have a developing account, personal ones are also acceptable)
