ios - UITableView image changing while scrolling -


i have uitableview custom cell. custom cell contains uiview. image loaded here asynchronously. when scrolls table view, images in cell changes. here code:

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     static nsstring *cellidentifier = @"mycell";     msappointmentsmodel *data = [self.appointments objectatindex:indexpath.row];      msappointmentscell *cell = (msappointmentscell*)[tableview dequeuereusablecellwithidentifier:cellidentifier];     if (cell == nil) {         nsarray *ar = [[nsbundle mainbundle] loadnibnamed:[common checkdeviceforcontroller:@"msappointmentscell"] owner:nil options:nil];         (id eachobject in ar) {             if ([eachobject iskindofclass:[uitableviewcell class]]) {                 cell = eachobject;             }         }         cell.accessorytype = uitableviewcellaccessorydisclosureindicator;         dispatch_async(dispatch_get_global_queue(0, 0), ^{             nsurl *imgurl = [nsurl urlwithstring:[data.cusdetails objectforkey:@"customer_image"]];             nsdata *imgdata = [nsdata datawithcontentsofurl:imgurl];             uiimage *image = [uiimage imagewithdata:imgdata];             dispatch_sync(dispatch_get_main_queue(), ^{                 [cell.medallionview setimage:image];             });         });          if (data.comp_status == yes) {             cell.status.image = [common imageresize:[uiimage imagenamed:@"checkmark_green.png"] andresizeto:cell.status.frame.size];         }      }      cell.custname.text = [data.cusdetails objectforkey:@"customer_name"];     cell.service.text = [data service];     cell.empname.text = [nsstring stringwithformat:@"by %@",[data.empdetails objectforkey:@"employee_name"]];       return cell; }

please me.

try this,

1: take array caching image nsmutablearray * imageicons;

2: after downloading data add null values array;

 imageicons=[[nsmutablearray alloc] init];   (int i=0; i<[self.appointments count]; i++)  {  [imageicons insertobject:[nsnull null] atindex:i]; }

3: 

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {   if(indexpath.row < [imageicons count] && [imageicons objectatindex:indexpath.row] != [nsnull null] )         {             [cell.bookimage setimage:[imageicons objectatindex:indexpath.row]];             nslog(@"array hit");          }         else{         nslog(@"count of %i size of %li array , row number %i",[imageicons count],sizeof(imageicons),indexpath.row);       [nsthread detachnewthreadselector:@selector(downloadimageinbackground:) totarget:self withobject:indexpath];         }  }  -(void)downloadimageinbackground:(nsindexpath *)path { msappointmentsmodel *data = [self.appointments objectatindex:indexpath.row]; nsstring *str=[data.cusdetails objectforkey:@"customer_image"];    imagetodisplay  = [uiimage imagewithdata:[nsdata datawithcontentsofurl:[nsurl urlwithstring:str]]];  if (imagetodisplay==nil) {    // set deault image      [imageicons replaceobjectatindex:path.row withobject:[uiimage imagenamed:@"defaultimg.png"]]; } else {      msappointmentscell *cell=(msappointmentscell *)[self.booktableview cellforrowatindexpath:path];     [cell.bookimage setimage:imagetodisplay];     //nslog(@"count of %i size of %li array , row number %i",[imageicons count],sizeof(imageicons),path.row);      [imageicons replaceobjectatindex:path.row withobject:imagetodisplay];   }  }

Comments

Post a Comment

Popular posts from this blog

curl - PHP fsockopen help required -

i trying work on cloudflare api , have found in documentation. unfortunately have no idea how can use in fsockopen or through curl. here example of post request. need know how can make request below data post using curl or fsockopen curl https://www.cloudflare.com/api_json.html -d 'a=cache_lvl' \ -d 'tkn=8afbe6dea02407989af4dd4c97bb6e25' \ -d 'email=sample@example.com' \ -d 'z=example.com' \ -d 'v=agg' here link cloudflare https://www.cloudflare.com/docs/client-api.html#s4.2 try one: $ch = curl_init("https://www.cloudflare.com/api_json.html"); curl_setopt($ch, curlopt_returntransfer,1); curl_setopt($ch, curlopt_followlocation, 1); curl_setopt($ch, curlopt_ssl_verifypeer,false); // handling of -d curl parameter here. $param = array( 'a' => 'cache_lvl', 'tkn' => '8afbe6dea02407989af4dd4c97bb6e25', 'email' => 'sample@example.com', 'z' =...
Read more

HTTP/1.0 407 Proxy Authentication Required PHP -

i working in restricted network/limited access internet. since have use proxy make web service call. here php code calling web service , response . $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' => $proxy_host, 'proxy_port' => $proxy_port, 'proxy_login' => $proxy_login, 'proxy_password' => $proxy_password)); response is fatal error: uncaught soapfault exception: [wsdl] soap-error: parsing wsdl: couldn't load ' http://www.xyz.com/abc/wsdls/login.wsdl ' : failed load external entity if copy url error message , paste in browser(with same proxy settings) works. 2nd scenario is, if pass values instead of variables giving me diffarant response $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' ...
Read more

c# - Resource not found error -

i have problem accessing method on homecontroller. show code of method : [httpget] public actionresult decriptidentifiantetredirige(string login_crypter, string mdp_crypter) { string loginacrypter = _globalmanager.protegemotdepasse(login_crypter); string mdpacrypter = _globalmanager.protegemotdepasse(mdp_crypter); user userapp = new models.user(login_crypter, mdp_crypter); if (userapp.authentificationvalidee(userapp.userlogin, userapp.password)) { session["name"] = userapp.userlogin; return redirecttoaction("accueil", "home"); } else { return redirecttoaction("validerauthentification", "home"); } } then in routeconfig.cs wrote route : routes.maproute( name: "authentificationapresdecryptage", url: "{controller}/{action}/{login_crypter}/{mdp_crypter}", defaults: new...
Read more