iOS Dropbox错误加载缩略图

Question

I wanna get thumbnails for dropbox files that I display on a view. I know that I've to use the loadThumbnail method, but I don't get exactly how to do it.

I wrote this :

for file in dropboxMetadata.contents {
        dbRestClient.loadThumbnail(file.path, ofSize: "s", intoPath: "https://api-content.dropbox.com/1/thumbnails/auto/")
}

but I get some errors like this :

error making request to /1/thumbnails/dropbox/star.jpg - (4) Error Domain=NSCocoaErrorDomain Code=4 "The operation couldn’t be completed.

Thanks for your help !

Answer 1

Petesh has the right idea. intoPath is the destination directory for those thumbnails.

Try this:

    func createTempDirectory() -> String? {
    let tempDirectoryTemplate = NSTemporaryDirectory().stringByAppendingPathComponent("XXXXX")

    let fileManager = NSFileManager.defaultManager()

    var err: NSErrorPointer = nil

    // remove any previous temporary folder that's there, in case it's there
    fileManager.removeItemAtPath(tempDirectoryTemplate)

    if fileManager.createDirectoryAtPath(tempDirectoryTemplate, withIntermediateDirectories: true, attributes: nil, error: err) {
        return tempDirectoryTemplate
    } else {
        print("can't create temporary directory at \(tempDirectoryTemplate)")
        return nil
    }
}

The above code for which I found in this question

Then you could change your own code to do something like:

let temporaryDirectory = createTempDirectory()
for file in dropboxMetadata.contents {
        dbRestClient.loadThumbnail(file.path, ofSize: "s", intoPath: temporaryDirectory)
}

If this works, then you could change the " intoPath " parameter into any directory you think is more appropriate.