How to check a file is video or image?

问题

I am developing a chat app using parse. I want to play the vodeo when users click on the video message and Display expandable image when the user click on the picture message. for that I need to differentiate image and video. Kindly guide me to do that...

回答1:

Surely the easiest way will be of course to look at the file extension...?

回答2:

For future googlers ... on didTapMessageBubbleAtIndexPath delegate you should check for item class

let message = yourMessageArray[indexPath.item]

if message.isMediaMessage() {
    if message.media().isKindOfClass(JSQPhotoMediaItem) {
         //Handle image
    } else if message.media().isKindOfClass(JSQVideoMediaItem) {
         let video = message.media() as! JSQVideoMediaItem
         let videoURL = video.fileURL
    }
}

回答3:

Save this information in another field on Parse during the asset upload.

来源：https://stackoverflow.com/questions/31582717/how-to-check-a-file-is-video-or-image