????????錯(cuò)誤信息:?The iOS Simulator deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 14.2.99.
? ? ? ? 解決方案:進(jìn)入target的build setting 欄,修改iOS Deployment Target為8.0以上

還有種做法,是在Podfile文件最底部添加,后邊的版本號(hào)就跟錯(cuò)誤提示中說(shuō)明的版本號(hào)
?post_installdo|installer|
? ? installer.pods_project.targets.eachdo|target|
? ? ? target.build_configurations.eachdo|config|
? ? ? ? ifconfig.build_settings['IPHONEOS_DEPLOYMENT_TARGET'].to_f <9.0
? ? ? ? ? config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] ='9.0'
? ? ? ? end
? ? ? end
? ? end
? end
