Action on Section Header Tableview iOS - ios

Question

I've a view in Section Header where I placed a Button over it. On that button click API hits but the section index picked is wrong,
I want to send Object at the Section Header index as parameter.
Here is my code for Tableview:
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
return [[DATAA objectAtIndex:section] objectForKey:#"subitemname"];
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UIView *aView =[[UIView alloc] initWithFrame:CGRectMake(0, 10, self.view.frame.size.width, 40)];
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, self.view.frame.size.width, 40)];
[btn setBackgroundColor:[UIColor clearColor]];
[btn setTag:section+1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
UILabel *title=[[UILabel alloc]initWithFrame:CGRectMake(btn.frame.origin.x+20, btn.frame.origin.y, btn.frame.size.width, btn.frame.size.height)];
title.text=[[DATAA objectAtIndex:section] objectForKey:#"subitemname"];
title.font=[UIFont boldSystemFontOfSize:12.0];
title.textColor=[UIColor grayColor];
[aView addSubview:title];
indexx=[[DATAA objectAtIndex:section] objectForKey:#"subitemid"];
NSLog(#"indexL:%#",indexx);
return aView;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [DATAA count];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
CGFloat height = 30;
return height;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSArray *subMenuData = [[DATAA objectAtIndex:section] objectForKey:#"Submenu"];
return [subMenuData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
cell=[tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
NSDictionary *cellData = [[[DATAA objectAtIndex:indexPath.section] objectForKey:#"Submenu"] objectAtIndex:indexPath.row];
cell.textLabel.text=[cellData objectForKey:#"subtosubitemname"];
cell.textLabel.font=[UIFont boldSystemFontOfSize:12.0];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
}
- (void)sectionTapped:(UIButton*)btn {
NSString *urlString = [NSString stringWithFormat:#"http://URL/api/SearchItem?subitemid=%#",indexx];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"GET"];
NSError *error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *str=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
NSLog(#"json:%#",jsonDict);
}

Answer 1

do like this.
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
return [[DATAA objectAtIndex:section] objectForKey:#"subitemname"];
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UIView *aView =[[UIView alloc] initWithFrame:CGRectMake(0, 10, self.view.frame.size.width, 40)];
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, self.view.frame.size.width, 40)];
[btn setBackgroundColor:[UIColor clearColor]];
[btn setTag:section+1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
UILabel *title=[[UILabel alloc]initWithFrame:CGRectMake(btn.frame.origin.x+20, btn.frame.origin.y, btn.frame.size.width, btn.frame.size.height)];
title.text=[[DATAA objectAtIndex:section] objectForKey:#"subitemname"];
title.font=[UIFont boldSystemFontOfSize:12.0];
title.textColor=[UIColor grayColor];
[aView addSubview:title];
//indexx=[[DATAA objectAtIndex:section] objectForKey:#"subitemid"];
//NSLog(#"indexL:%#",indexx);
return aView;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [DATAA count];
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
CGFloat height = 30;
return height;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
NSArray *subMenuData = [[DATAA objectAtIndex:section] objectForKey:#"Submenu"];
return [subMenuData count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
cell=[tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
NSDictionary *cellData = [[[DATAA objectAtIndex:indexPath.section] objectForKey:#"Submenu"] objectAtIndex:indexPath.row];
cell.textLabel.text=[cellData objectForKey:#"subtosubitemname"];
cell.textLabel.font=[UIFont boldSystemFontOfSize:12.0];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
}
- (void)sectionTapped:(UIButton*)btn {
NSString *urlString = [NSString stringWithFormat:#"http://dealnxt.com/api/SearchItem?subitemid=%#",btn,tag];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"GET"];
NSError *error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *str=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
NSLog(#"json:%#",jsonDict);
}

Answer 2

You are keeping the variable indexx as global variable, so if we scroll the tableView, then the variable get update. So it is not a good approach. Please update your 2 methods like mentioned below
Method: 1
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
UIView *aView =[[UIView alloc] initWithFrame:CGRectMake(0, 10, self.view.frame.size.width, 40)];
UIButton *btn=[UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0, 0, self.view.frame.size.width, 40)];
[btn setBackgroundColor:[UIColor clearColor]];
[btn setTag:section+1];
[aView addSubview:btn];
[btn addTarget:self action:#selector(sectionTapped:) forControlEvents:UIControlEventTouchDown];
UILabel *title=[[UILabel alloc]initWithFrame:CGRectMake(btn.frame.origin.x+20, btn.frame.origin.y, btn.frame.size.width, btn.frame.size.height)];
title.text=[[DATAA objectAtIndex:section] objectForKey:#"subitemname"];
title.font=[UIFont boldSystemFontOfSize:12.0];
title.textColor=[UIColor grayColor];
[aView addSubview:title];
return aView;
}
Method 2:
- (void)sectionTapped:(UIButton*)btn {
indexx=[[DATAA objectAtIndex:btn.tag - 1] objectForKey:#"subitemid"];
NSString *urlString = [NSString stringWithFormat:#"http://dealnxt.com/api/SearchItem?subitemid=%#",indexx];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:#"GET"];
NSError *error;
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *str=[[NSString alloc]initWithData:returnData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error];
NSLog(#"json:%#",jsonDict);
}