小编Luk*_*ers的帖子

这个代码和它在“尝试！”时崩溃，但我不知道如何捕捉错误并且它是明确的，否则它将无法工作。

func downloadPicture2(finished: () -> Void) {          
    let imageUrlString = self.payments[indexPath.row].picture
    let imageUrl = URL(string: imageUrlString!)!
    let imageData = try! Data(contentsOf: imageUrl)
    cell.profilePicture.image = UIImage(data: imageData)
    cell.profilePicture.layer.cornerRadius = cell.profilePicture.frame.size.width / 2
    cell.profilePicture.clipsToBounds = true        
}