This is how I saved the images
    let format = DateFormatter()
    format.dateFormat=\"MMMM-dd-yyyy-ss\"
    let currentFileName = \"\\(format.string(from: Date         
        
Try using this
 func getImage(){
        let fileManager = FileManager.default
        let imagePAth = (self.getDirectoryPath() as NSString).appendingPathComponent("apple.jpg") // saved image name apple.jpg
        if fileManager.fileExists(atPath: imagePAth){
            self.lockbackImageview.image = UIImage(contentsOfFile: imagePAth)
        }else{
            print("No Image")
            self.lockbackImageview.image = UIImage.init(named: "1.jpg")
        }
    }