iOS---TextView显示HTML文本

_checkallintroducetextview = [[uitextview alloc] initwithframe:cgrectmake(10, 0, kscreenwidth-20, kscreenheight)];

_checkallintroducetextview.backgroundcolor = self.view.backgroundcolor;

_checkallintroducetextview.returnkeytype=uireturnkeydone;

_checkallintroducetextview.delegate = self;

_checkallintroducetextview.showsverticalscrollindicator = no;

nsattributedstring *attributedstring = [[nsattributedstring alloc] initwithdata:[@"后台返回给你的html格式的字符串" datausingencoding:nsunicodestringencoding] options:@{ nsdocumenttypedocumentattribute: nshtmltextdocumenttype } documentattributes:nil error:nil];

_checkallintroducetextview.attributedtext = attributedstring;

_checkallintroducetextview.textcolor = kcolor_gray_6;

[self.view addsubview:_checkallintroducetextview];