fetch Cover Image from epub in ios

问题:

I want to display Book Cover Image of epub file in my Reading table. In my iOS application I have added "Open In" support for epub files. So when i navigate to my book reading app I want to show book's cover image in shelf first and then want to load that book. Please help me to fetch Cover Image from epub book in ios app.

回答1:

You will have to unzip the ePub and parse the metadata.

1. Parse META-INF/container.xml and find the .OPF file path.

2. The .OPF file contains all that you need, a tag meta with name cover that refers to a tag item, this is the image cover.

3. You can copy this image to somewhere and delete the unzipped files.

PS: I am the creator of FolioReaderKit an ePub Reader and Parser written in Swift 2, this is where I get the book cover FREpubParser.swift. If you don't want to deal XML you can read the ePubs using it, it will also parse the metadata and exposes for you.