(I read a lot of articles about getting the mobile phone address book. The display is very monotonous, and some can't be sorted, which is very troublesome to find. You have to write your own code when applying. Importing files one by one is very troublesome. So I made this function into a library project, which can be directly imported into the project (see the screenshot for the import method) for your convenience. In terms of function, it is sorted alphabetically and can be searched by a~z I have tested it with my mobile phone. When it comes to the secret of the address book, I won't take screenshots and run it directly. The project has been tested and you can download it with confidence.)