set the tag of textFIeld - objective-c

Question

I'm Having a custom cell which is consist of 3 different textfield txtsq,txtPOB,txtRxunit , and this custom cell m taking in my table view Controller, in table view Controller class inside the tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath , now i want to set the 3 different range limit of my 3 different text field which is in custom cell but i fail to set range in my
-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range
replacementString:(NSString *)string{
NSString *resultStr = [textField.text stringByReplacingCharactersInRange:range withString:string];
if (textField.tag ==SQ) {
if([self isNumeric:resultStr]){
if(resultStr.length <= 3){
if(resultStr.length >= 1){
NSString *firstLetter = [resultStr substringWithRange:NSMakeRange(0, 1)];
if(![firstLetter isEqualToString:#"0"]){
return YES;
}
}
else{
return YES;
}
}
}
}else
if([self isNumeric:resultStr]){
if(resultStr.length <= 5){
if(resultStr.length >= 1){
NSString *firstLetter = [resultStr substringWithRange:NSMakeRange(0, 1)];
if(![firstLetter isEqualToString:#"0"]){
return YES;
}
}
else{
return YES;
}
}
}
return NO;
}
I have already defined cell.txtSQ.tag=SQ;
cell.txtPOB.tag =POB;
cell.txtRxUnit.tag=RXunit;
After using this code my table view data is not persistent.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
if (self.skuNameArray.count > 0) {
OrderCell *cell = nil;
cell = (OrderCell *)[tableView dequeueReusableCellWithIdentifier:#"OrderCell"];
if(cell == nil){
cell = (OrderCell *)[OrderCell cellFromNibNamed:#"OrderCell"];
}
// Set Tag
cell.tag = indexPath.row;
cell.txtSQ.tag = indexPath.row;
cell.txtPOB.tag = indexPath.row;
cell.txtRxUnit.tag = indexPath.row;
// cell.txtSQ.tag=SQ;
//set Delegate
cell.txtPOB.delegate = self;
cell.txtRxUnit.delegate = self;
cell.txtSQ.delegate = self;
//set Values
cell.lblSKU.text = self.skuNameArray[indexPath.row];
cell.txtSQ.text = self.sqArray[indexPath.row];
cell.txtPOB.text = self.pobArray[indexPath.row];
cell.txtRxUnit.text = self.rxUnitArray[indexPath.row];
if (self.index == PCP || self.index == CURRENT_DAY_REPORTING_DETAIL) {
cell.txtSQ.enabled = NO;
cell.txtRxUnit.enabled = NO;
cell.txtPOB.enabled = NO;
}
[cell.txtSQ addTarget:self action:#selector(sqChanged:) forControlEvents: UIControlEventEditingChanged];
[cell.txtPOB addTarget:self action:#selector(pobChanged:) forControlEvents: UIControlEventEditingChanged];
[cell.txtRxUnit addTarget:self action:#selector(rxUnitChanged:) forControlEvents: UIControlEventEditingChanged];
cell.backgroundColor = [UIColor clearColor];
return cell;
}

Answer 1

Your SQ may be dynamic . So, make it static.
or
you might not have set delegate to self. Do this :
cell.txtSQ.delegate = self;
cell.txtPOB.delegate = self;
cell.txtRxUnit.delegate = self;
Set your tag carefully :
// Set Tag
cell.txtSQ.tag = SQ;
cell.txtPOB.tag = POB;
cell.txtRxUnit.tag = RXunit;