ios - data in tableview is pile up when scrolling -

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how create data in tableviewcell when scrolling not pile ?

-(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {      static nsstring *thecell = @"cell";     uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:thecell];      if (! cell) {          cell = [[uitableviewcell alloc]initwithstyle:uitableviewcellstylesubtitle reuseidentifier:thecell];     }      uilabel *data1 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"nomer"]]withframe:cgrectmake(10, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data1 atindex:0];      uilabel *data2 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"subjek"]]withframe:cgrectmake(50, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data2 atindex:1];      uilabel *data3 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"shadowscore"]]withframe:cgrectmake(200, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data3 atindex:2];      uilabel *data4 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"finalscore"]]withframe:cgrectmake(250, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data4 atindex:3];      uilabel *data5 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"kkm"]]withframe:cgrectmake(300, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data5 atindex:4];      uilabel *data6 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"status"]]withframe:cgrectmake(350, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data6 atindex:5];      uilabel *data7 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"teachernote"]]withframe:cgrectmake(400, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];     [cell insertsubview:data7 atindex:6];      return cell; }

the problem everytime cell loaded, adding new uilabel. becomes problem when cells recycled since have labels created , you're creating more.

you should subclassing uitableviewcell, creating uilabels , layout want on load, setting information in cellforrowatindexpath: method. allows recycle cells , improve performance while maintaining layouts , avoiding "stacking issue" you've found.

second option

as second, less desirable, option move uilabel create methods if (!cell) block , retrieving them tags , setting them outside block. less portable , more fragile, same efficient effect of reusing labels in place. this:

-(uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {      static nsstring *thecell = @"cell";     uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:thecell];      if (! cell) {          cell = [[uitableviewcell alloc]initwithstyle:uitableviewcellstylesubtitle reuseidentifier:thecell];          uilabel *data1 = [self createlabeltext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"nomer"]]withframe:cgrectmake(10, 10, 150, 50) withfont:[uifont fontwithname:@"arial" size:16] withcolor:[uicolor clearcolor]];         data1.tag = 1;         [cell insertsubview:data1 atindex:0];          // ... load other labels , give unique tags      }      uilabel *data1 = [cell viewwithtag:1];     data1 settext:[nsstring stringwithformat:@"%@",[[arrayutama objectatindex:indexpath.row]objectforkey:@"nomer"]]];      // ... load other labels tag , set text.      return cell; }

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