i trying convert html attributedtext , store inside of uitextview. keep getting error
[__nsplaceholderdictionary initwithobjects:forkeys:count:]: attempt insert nil object objects[0]
i have checked values of dictionaries using , not nil, don't see problem is.
the attributed text generated , has value "your message here" in red text expected but, when try insert in line tx.attributedtext = attrstring; error.
uitextview *tx =[[uitextview alloc]init]; [tx setreturnkeytype:uireturnkeydone]; [tx settag:1]; tx.delegate = self; nsstring *htmlstring = @"<bold>test html</bold>"; nsdictionary *options = @{nsdocumenttypedocumentattribute: nshtmltextdocumenttype}; nsattributedstring *attrstring = [[nsattributedstring alloc] initwithdata:[htmlstring datausingencoding:nsutf8stringencoding] options:options documentattributes:nil error:nil]; tx.attributedtext = attrstring; return tx; edit: have simplified code,i have removed web request , inserted plain html. no matter inserted there, still same error
this raw value of htmlstring: may have messed in pasting value
"<!doctype html public "-//w3c//dtd html 4.01//en" "http://www.w3.org/tr/html4/strict.dtd"><html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"><meta http-equiv="content-style-type" content="text/css"><title></title><meta name="generator" content="cocoa html writer"><style type="text/css">p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px ".sf ui text"; color: #ff0000; background-color: #ffffff}span.s1 {font-family: ".sfuitext-regular"; font-weight: normal; font-style: normal; font-size: 14.00pt; text-decoration: line-through}</style></head><body><p class="p1"><span class="s1">your message here!</span></p</body></html>""
options :
[0] (null) @"documenttype" : @"nshtml" attrstring :
`attrstring nsconcreteattributedstring * @"hi test html" with attributes nsrlearray * 0x7fa0fd8053a0 0x00007fa0fd8053a0
inside of nsobject of isa class nsrlearray 0x000000010a03ede8
for reason, code above works fine if it not run on main thread had pass textview function , convert html attributedtext within it
- (uitextview *)requestmessagereply:(uitextview*)textview { nsmutableurlrequest *request = [[nsmutableurlrequest alloc] init]; [request sethttpmethod:@"get"]; [request seturl:[nsurl urlwithstring:@"http://lurl"]]; nserror *error = [[nserror alloc] init]; nshttpurlresponse *responsecode = nil; nsdata *oresponsedata = [nsurlconnection sendsynchronousrequest:request returningresponse:&responsecode error:&error]; if([responsecode statuscode] != 200){ nslog(@"error getting http status code %li", (long)[responsecode statuscode]); } nsstring * responsestring = [[nsstring alloc] initwithdata:oresponsedata encoding:nsutf8stringencoding]; nsdata *jsondata = [responsestring datausingencoding:nsutf8stringencoding]; nsdictionary *json = [nsjsonserialization jsonobjectwithdata:jsondata options: nsjsonreadingmutablecontainers error:nil]; // nsstring *htmlstring = [self requestmessagereply]; nsstring *htmlstring = (nsstring *)json[@"message"]; //(nsstring *)json[@"message"] nsdictionary *options = @{nsdocumenttypedocumentattribute: nshtmltextdocumenttype,nscharacterencodingdocumentattribute: @(nsutf8stringencoding)}; nsattributedstring *attrstring = [[nsattributedstring alloc] initwithdata:[htmlstring datausingencoding:nsutf8stringencoding] options: options documentattributes:nil error:nil]; textview.attributedtext = attrstring; return textview; } 
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