When we click on the target of xcode project, we can see that the framework has several optional states, just like in the construction stage: before xcode 10, there are three states: not embedded, embedded &; Sign and embed without signing.

Embedded: embedded, used for dynamic libraries, which are linked at runtime, so they need to be input into the bundle. How to judge? Use the terminal to do the following:

If returned:

The difference between state library and dynamic library

Systematic. The framework is a dynamic library, which is our own. A framework is usually a static library.

* Signature: It is only used in dynamic libraries. If you have already signed it, you don't have to sign it. How to judge? Use the terminal to do the following:

If returned: