我需要用字符串productDesc初始化NsmutableAttributedString，但是代码崩溃attrStrInfoLabel=[[NSMutableAttributedStringalloc]initWithString:productDesc];错误[NSConcreteMutableAttributedString_encodingCantBeStoredInEightBitCFString]。请告知我的代码是NSMutableAttributedString*attrStrInfoLabel;NSMutableString*productDesc;productDe