Button Getting Populating Some Other Cell in UITableViewCell using Objective C? - ios

Question

I have created UITableview Programmatically and Populated array values dynamically. Here My Problem is, I created a UIButton Programmatically for zeroth row, It created well but When I am Scrolling the tableview button is Populating some other cells also. I don't Know how to solve that issue in my tableview. I want a UIButton on Only Zeroth index of the cell. I have tried the below code..
- (IBAction)MoreBttn:(id)sender {
NSUserDefaults *userDefaults1 = [NSUserDefaults standardUserDefaults];
[userDefaults1 setObject:amenties forKey:#"FACILITIES"];
CGRect screenRect = [[UIScreen mainScreen] bounds];
amentiestableview=[[UITableView alloc]initWithFrame:screenRect style:UITableViewStylePlain];
amentiestableview.delegate=self;
amentiestableview.dataSource=self;
UIEdgeInsets insets = UIEdgeInsetsMake(20,10,20,10);
CGRect tableframe=amentiestableview.frame;
amentiestableview.frame=UIEdgeInsetsInsetRect(tableframe,insets);
[[UIApplication sharedApplication].keyWindow addSubview:amentiestableview];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [amenties count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"facilities";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
if(indexPath.row == 0) {
UIButton *b = [UIButton buttonWithType:UIButtonTypeCustom];
float X_Co = self.tableView.frame.size.width - 60;
[b setFrame:CGRectMake(X_Co, 0.0, 60, 45)];
[b setTitle:#"button" forState:UIControlStateNormal];
[b addTarget:self
action:#selector(hidetableview:)
forControlEvents:UIControlEventTouchUpInside];
[b setImage:[UIImage imageNamed:#"clearpink.png"] forState:UIControlStateNormal];
[cell addSubview:b];
}
else{
}
cell.textLabel.text=[amenties objectAtIndex:indexPath.row];
return cell;
}
-(void)hidetableview:(UIButton*)sender
{
amentiestableview.hidden=YES;
}

Answer 1

The cell is being re-used, so the button appear on other cells. Try to update cellForRow method as follows:
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
UIButton *b = [UIButton buttonWithType:UIButtonTypeCustom];
float X_Co = self.tableView.frame.size.width - 60;
[b setFrame:CGRectMake(X_Co, 0.0, 60, 45)];
[b setTitle:#"button" forState:UIControlStateNormal];
[b addTarget:self
action:#selector(hidetableview:)
forControlEvents:UIControlEventTouchUpInside];
[b setImage:[UIImage imageNamed:#"clearpink.png"] forState:UIControlStateNormal];
[cell addSubview:b];
}
if(indexPath.row == 0) {
b.hidden = false
}
else{
b.hidden = true
}

Answer 2

We are recycling the cells by using the method dequeueReusableCellWithIdentifier. And you should recycle cells because the allocation of views need a lot of resources
Please try the below code
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
if(indexPath.row == 0) {
UIButton *b = [UIButton buttonWithType:UIButtonTypeCustom];
float X_Co = self.tableView.frame.size.width - 60;
[b setFrame:CGRectMake(X_Co, 0.0, 60, 45)];
[b setTitle:#"button" forState:UIControlStateNormal];
[b addTarget:self
action:#selector(hidetableview:)
forControlEvents:UIControlEventTouchUpInside];
[b setImage:[UIImage imageNamed:#"clearpink.png"] forState:UIControlStateNormal];
b.tag = 1010
[cell addSubview:b];
}
else{
cell.contentView.viewWithTag(1010).removeFromSuperview()
}