网上下载的demo,执行报错-pie can only be used when targeting iOS 4.2 or later 解决的方法:选择target==》改动development Target改为8.1就可以 相关文章: 2021-06-29 2021-12-29 2022-12-23 2022-12-23 2022-12-23 2021-07-07 2021-06-02 2022-01-12