- The iOS Simulator deployment target is set to 6.0, but the range of supported deployment target versions for this platform is 8.0 to 12.0. (in target 'MJRefresh')
出现这个问题如果你用了cocoapods的话。直接删除原来cocoapods相关的内容在重新pod install重新生成。
Perform Changes一下,然后clean一下就搞定了。