UIDocumentInteractionController UIDocumentPickerViewController

Recently, the company has made a mobile terminal that can send office File and can open preview , So I picked out these two brothers , But there are not many introductions on the Internet , So I need to check the official documents , And realize it .

 

UIDocumentInteractionController

One 、 The main role ：

1. The preview is similar to pdf、doc、ppt And other types of files .

2. The files received by the user can be shared with others on the user's mobile phone App in .