提示" An unknown error occurred. See the [install log] for more details."
點(diǎn)擊 install log看了一下信息大概是：
Package Authoring Error: PackageInfo bundle reference found without top-level bundle definition. Bundle will be skipped: <bundle id="*"></bundle>
2019-10-29 10:08:18+08 localhost Xcode[670]: Package: PKLeopardPackage <id=com.apple.pkg.MobileDeviceDevelopment, version=12.1.9000000000.1.1540357468, url=file:///Applications/Xcode_10.3.app/Contents/Resources/Packages/MobileDeviceDevelopment.pkg> Failed to verify with error: Error Domain=PKInstallErrorDomain Code=102 "The package “MobileDeviceDevelopment.pkg” is untrusted." UserInfo={NSLocalizedDescription=The package “MobileDeviceDevelopment.pkg” is untrusted., NSURL=MobileDeviceDevelopment.pkg -- file:///Applications/Xcode_10.3.app/Contents/Resources/Packages/, PKInstallPackageIdentifier=com.apple.pkg.MobileDeviceDevelopment, NSUnderlyingError=0x7fba48468f10 {Error Domain=NSOSStatusErrorDomain Code=0 "noErr: Call succeeded with no error" UserInfo={SecTrustResult=1, PKTrustLevel=PKTrustLevelExpiredCertificate, NSLocalizedFailureReason=No error.}}}
1、根據(jù)里面的路徑進(jìn)入：/Applications/Xcode_10.3.app/Contents/Resources/Packages/MobileDeviceDevelopment.pkg
2、手動安裝pkg
安裝過程報證書失效，此時需要修改電腦的系統(tǒng)時間沿侈。
然后繼續(xù)安裝岁诉，成功后犹赖，重新打開xcode就可以了魁巩。
