FFile.setup("<Your AWS identity pool Id>",
 s3URL: "<AWS Region URL>",
 s3Bucket: "<AWS bucket>", 
 s3Region: "<Your AWS bucket region>" 

let file = FFile(name: "example", data: data, fileExtension: "png")
file.saveInBackgroundWithBlock { success, error in
    if success {
        //Do something if success
    } else {
        // handle error
    }
}

//get your objectId and save it to anywhere
file.objectId

//use objectId to get your file
let file = FFile(objectId: objectId)
file.getDataInBackgroundWithBlock { data, error in
    if error {
        // handle error
    } else {
        // use your data
    }
}