但是“让asset = ImageAsset (url: url!)I'm let”数据1:致命错误:在解开可选值时意外发现nil“在”I‘s successfully data from the database“一行中写道。但可能是在定义url部分中的变量时。for item in gifsa {
urlStr.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLHostAllowedCharacterSet()) let data = NSData(contentsOfURL: url!)Movie_var()
}