转换项目后，我在Swift2中收到以下错误:stringByExpandingTildeinPathisunavailable:usestringByExpandingTildeinPathonNSStringinstead这是我用来在Swift1.2中与whatsapp分享的代码，第3行的错误:letfilename="myimage.wai"letdocumentsPath=NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.UserDomainMask,false)[0]asNSStringletdestinationP