one button in each section of uiTableView objective-C - objective-c

Question

I have a uitableview and in my table I have different section and in each section different rows,I want to add one button in last row of each sections
I used sectionFooter, and here is my code, but I don't know why I have it just in my last section of table and also it's not appear with scroll.
Here is my code:
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {
return 50;
}
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {
if(footerView == nil) {
footerView = [[UIView alloc] init];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
// [button setBackgroundImage:image forState:UIControlStateNormal];
//the button should be as big as a table view cell
[button setFrame:CGRectMake(10, 3, 300, 44)];
//set title, font size and font color
[button setTitle:#"Report New Time" forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont boldSystemFontOfSize:20]];
[button setTitleColor:[UIColor lightGrayColor] forState:UIControlStateNormal];
//set action of the button
[button addTarget:self action:#selector(removeAction:)
forControlEvents:UIControlEventTouchUpInside];
//add the button to the view
[footerView addSubview:button];
}
//return the view for the footer
return footerView;
}
what is wrong here, Would you please help me!
Thanks in advance!

Answer 1

You need to remove the if statement in your tableView:viewForFooterInSection: method. That's causing only one view to be created.

Answer 2

One UIView has to have only one superview. You have to create footerView for every section.

Answer 3

You are reusing the footerView for every section, partly by just keeping one footerView instance variable, partly by just creating it once. Every time UITableView asks you for a footer view for a section and it gets back the same view, that view is moved since it can't stay in all those places at the same time. The solution is to not use a single view.
Use an NSMutableDictionary to hold NSNumbers with the section number as key and the appropriate footer view as the value. Change the code to work with the section's "slot" in the dictionary instead of a single instance variable.