How to perform Validation in ios uitableview (group table)? - iphone

Question

In my app i have used UItableview group table.
In which there are two section and i want to perform validation on it.
for eg:In section 1 there are two row's,if user select row one user have to select some value from section 2 and if user have select second row in 1 section then no need of selection in section two.
following is my code:
- (void)viewDidLoad
{
NSArray *arr_data1 =[[NSArray alloc]initWithObjects:#"Yes",#"No",nil];
NSArray *arr_data2 =[[NSArray alloc] initWithObjects:#"Monotherapy",#"Adjunctive",nil];
NSDictionary *temp =[[NSDictionary alloc]
initWithObjectsAndKeys:arr_data1,#"",arr_data2,
#"Was it monotherapy or adjunctive",nil];
self.tableContents =temp;
self.arr_data =[[self.tableContents allKeys]
sortedArrayUsingSelector:#selector(compare:)];
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [self.arr_data count];
}
-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [self.arr_data objectAtIndex:section];
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSArray *listData =[self.tableContents objectForKey:
[self.arr_data objectAtIndex:section]];
return [listData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *SimpleTableIdentifier = #"SimpleTableIdentifier";
NSArray *listData =[self.tableContents objectForKey:
[self.arr_data objectAtIndex:[indexPath section]]];
UITableViewCell * cell = [tableView
dequeueReusableCellWithIdentifier: SimpleTableIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:SimpleTableIdentifier];
}
NSUInteger row = [indexPath row];
cell.textLabel.text = [listData objectAtIndex:row];
return cell;
}
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSArray *listData =[self.tableContents objectForKey:
[self.arr_data objectAtIndex:[indexPath section]]];
NSUInteger row = [indexPath row];
NSLog(#"fdfdfdf=%d",[indexPath row]);
NSString *rowValue = [listData objectAtIndex:row];
if ([rowValue isEqualToString:#"Yes"])
{
NSString *message = [[NSString alloc] initWithFormat:#"%#",rowValue];
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"You selected"
message:message delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}

Answer 1

In - (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath ,
you can check the section you need by using the following code:
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.section == 0)
{
//do as per you requirement
}
else if(indexPath.section == 1)
{
//do as per you requirement
}
}

Answer 2

You can first declare a variable count to keep track of how many items are selected in section 2 and isItemRequired as a flag variable and sythesize them, then use these delegates:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
A sample code to begin with:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.section == 0)
{
if(indexPath.row == 0)
{
isItemRequired = YES;
if(isItemRequired && count==0)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Item Required" message:#"You must have to select one or more item in section 2" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil ];
[alert show];
}
}
else
{
isItemRequired = NO;
}
}
else if(indexPath.section == 1)
{
count = 0;
for (int i=0; i < [tableView numberOfRowsInSection:1]; i++)
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:1]];
if(cell.selected==YES)
{
count++;
}
}
}
}
-(void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(indexPath.section == 1)
{
count = 0;
for (int i=0; i < [tableView numberOfRowsInSection:1]; i++)
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:1]];
if(cell.selected==YES)
{
count++;
}
}
if(isItemRequired && count==0)
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Item Required" message:#"Atleast one item should be selected in section 2" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil ];
[alert show];
}
}
}

Answer 3

In the didselect method of UITableView, you needs to check the section number & then check which row is clicked from that section
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (indexPath.section == 0)
{
if (indexPath.row == 0)
{
//do this
}
else if (indexPath.row == 1)
{
//do this
}
}
else
{
//do this
}
}

Answer 4

In the following delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
add a check with the help of indexPath returned by the delegate, it will tell you that which section's which row is selected like :
if(indexPath.section == 0 && indexPath.row == 0)
{
// Select something from the another section also
}
else if(indexPath.section == 0 && indexPath.row == 1)
{
// No need to select from another section.
}

Answer 5

First Take one BOOL variable with isYes in .h file like bellow...
BOOL isYes;
after in viewDidLoad: method just assign it to NO like bellow..
isYes = NO;
after that in didSelectRowAtIndexPath delegate method just use like bellow...
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if(indexPath.section == 0 && indexPath.row == 0)
{
isYes = YES;
}
else if(indexPath.section == 0 && indexPath.row == 1)
{
isYes = NO;
}
if(isYes){
if(indexPath.section == 1 )
{
//here user can select the section 2
}
}
}
i hope this help you....