iOS开发版本问题，你们如何选择target version

Question

在开发iOS应用的时候，经常因为版本问题报各种警告，就算用if语句判断当前版本也会警告，想请教一下大家如何解决的。
另外一个问题，大家一般选择哪个target version，根据什么来选择？

Answer 1

There is no need to worry too much about target version
Generally, just choose a version
For example, if it is 9 now, you can start supporting it from 8
It will always be one year slower than the latest version. Don’t be too radical

Answer 2

It doesn’t matter if you develop it yourself, you can choose any version. For company projects, there are usually requirements. Generally speaking, they are 1 to 2 versions lower than the current version.