ios - UITableView - switch data from two arrays -

i'm working on application in have uitableview, 2 arrays , 1 uisegmentedcontrol. need when uisegmentedcontrol value 0 loaded in uitableview data array one, , when uisegmentedcontrol has value 1 loaded data array two. simply, need switch data loaded uitableview arrays. tried use bool, not work, think it's not ideal.

here code:

- (void)viewdidload {     [super viewdidload];      alltabledata = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"bwm" anddescription:@"auto" anddefinice:@"osobni"],nil ];      alltabledata2 = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"renault" anddescription:@"dodavka" anddefinice:@"velka"],nil ]; }   - (nsinteger)numberofsectionsintableview:(uitableview *)tableview {     return 1; }  - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {     long rowcount;     if(self.isswich == false)         rowcount = alltabledata.count;     else         rowcount = alltabledata2.count;      return rowcount; }  - (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     static nsstring *cellidentifier = @"cell";      uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:cellidentifier];     if (cell == nil)         cell = [[uitableviewcell alloc] initwithstyle:uitableviewcellstylesubtitle reuseidentifier:cellidentifier];      food* food;     if(self.isswitch  == false)     {         food = [alltabledata objectatindex:indexpath.row];     }     else     {         food = [alltabledata2 objectatindex:indexpath.row];     }     cell.textlabel.text = food.name;     cell.detailtextlabel.text = food.description;      return cell; } -(ibaction)switchdata:(id)sender {     if(self.myswitcher.selectedsegmentindex == 0)     {         isswitch = false;     }     else     {         isswitch = true;     } } 

you missing call reloaddata in witchdata: implementation. adding call fix problem.

i think it's not ideal.

that's right. rather storing flag says array use data source, store array itself. eliminate ifs on isswitch property:

// declare instance variable, , use // in data source methods. nsarray *thesource;  - (void)viewdidload {     [super viewdidload];      alltabledata = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"bwm" anddescription:@"auto" anddefinice:@"osobni"],nil ];      alltabledata2 = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"renault" anddescription:@"dodavka" anddefinice:@"velka"], nil];     thesource = alltabledata; }  -(ibaction)switchdata:(id)sender {     if(self.myswitcher.selectedsegmentindex == 0) {         thesource = alltabledata;     } else {         thesource = alltabledata2;     }     [mytable reloaddata]; } 

alternatively make isswitch integer, , use index array has alltabledata @ index 0 , alltabledata2 @ index one:

nsarray *sources; int sourceindex; // use sources[sourceindex] current source  - (void)viewdidload {     [super viewdidload];      alltabledata = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"bwm" anddescription:@"auto" anddefinice:@"osobni"], nil];      alltabledata2 = [[nsmutablearray alloc] initwithobjects:                     [[food alloc] initwithname:@"renault" anddescription:@"dodavka" anddefinice:@"velka"],nil ];     sources = @[alltabledata, alltabledata2];     sourceindex = 0; }  -(ibaction)switchdata:(id)sender {     sourceindex = self.myswitcher.selectedsegmentindex;     [mytable reloaddata]; }