I can't choose iOS simulator as destination when I run my project in Xcode.

Hey there,

Several days ago, I reinstalled my Xcode 6 for some reason. Since then, I can no longer run my apps on a simulator.

I tried following steps to solve the problems, but none of them work.

* I deleted my Xcode and reinstalled it from the App Store.

* I changed my project's "Deployment Info" -> "Deployment Target" to 8.1, 8.0, 7.1, 7.0, 6.1, 6.0, none of them worked.

* I download the 7.1 simulator from Xcode -> Preference -> Download, and change the Deployment Target again, nothing happened.

* I clear the download caches in ~/Library/Caches/Xcode, I knew it won't make any difference, but just in case, still, nothing changed.

I launch the simulator from the Xcode -> Open Developer Tools -> iOS Simulator. The 8.1 simulator launch with a alert said "Unable to determine device."

NEED HELP!!!! THANK YOU!!!!

P.S.

* I'm using a macbook pro (15 inch, mid 2012).

* My laptop's OS version is 10.10.2.

* My Xcode version is 6.1.1 (6A2008a).

* My (Default) simulator version is 8.1 (550.3).

* I never ever use bootcamp. =D

Hey there,

Several days ago, I reinstalled my Xcode 6 for some reason. Since then, I can no longer run my apps on a simulator.

I tried following steps to solve the problems, but none of them work.

* I deleted my Xcode and reinstalled it from the App Store.

* I changed my project's "Deployment Info" -> "Deployment Target" to 8.1, 8.0, 7.1, 7.0, 6.1, 6.0, none of them worked.

* I download the 7.1 simulator from Xcode -> Preference -> Download, and change the Deployment Target again, nothing happened.

* I clear the download caches in ~/Library/Caches/Xcode, I knew it won't make any difference, but just in case, still, nothing changed.

I launch the simulator from the Xcode -> Open Developer Tools -> iOS Simulator. The 8.1 simulator launch with a alert said "Unable to determine device."

NEED HELP!!!! THANK YOU!!!!

P.S.

* I'm using a macbook pro (15 inch, 2012 mid).

* My laptop's OS version is 10.10.2.

* I never ever use bootcamp. =D