u010200636的专栏

window -Devices 里面可以看到，每一个设备的8.4版本有两个模拟器，删掉剩一个，就ok了

http://www.skyfox.org/ios-xcode7-debug-device.htmlCould not find Developer Disk Image - Xcode 7 - iOS 8.4I saw that there was a public beta for Xcode, so I installed it. One of the new featu