UILabel in viewForFooterInSection text problem - iphone

Question

I want to display two lots of text in two different footers in my table.
The text for section 3 uses titleForFooterInSection :
- (NSString *)tableView:(UITableView *)tv titleForFooterInSection:(NSInteger)section
{
if (section == 3)
return #"SOME TEXT FOR SECTION 3";
else
return #"";
}
and works great and is styled correctly.
I also want to add some more complicatedly formatted text (just left aligned really), so I create a label and add it to viewForFooterInSection, which works but is not padded (doesn't start at x = 20 & y = 20, starts hard up against the main windows edge) and is not styled like the other text.
- (UIView *)tableView:(UITableView *)tv viewForFooterInSection:(NSInteger)section
{
if (section == 1)
{
UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(20, 20, 100, 50)] autorelease];
label.text = #"SOME COMPLICATED TEXT FOR SECTION 1\r\n"
"\r\n"
"MORE TEXT HERE\r\n"
"AND HERE.\r\n"
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont systemFontOfSize:14];
label.shadowColor = [UIColor colorWithWhite:0.8 alpha:0.8];
label.textColor = [UIColor blueColor];
label.lineBreakMode = UILineBreakModeWordWrap;
label.textAlignment = UITextAlignmentLeft;
label.numberOfLines = 0;
[label sizeToFit];
return label;
}
else
return nil;
}
-(CGFloat)tableView:(UITableView *)tv heightForFooterInSection:(NSInteger)section
{
if (section == 1)
return 180.0f;
else if (section == 3)
return 50.0f;
else
return 0.0f;
}

Answer 1

To get the padding add the label into another view before returning that as the footer view;
- (UIView *)tableView:(UITableView *)tv viewForFooterInSection:(NSInteger)section
{
...
CGRect footerFrame = [tv rectForFooterInSection:1];
CGRect labelFrame = CGRectMake(20, 20, footerFrame.size.width - 40, footerFrame.size.height - 40);
UIView *footer = [[UIView alloc] initWithFrame:footerFrame];
UILabel *footerLabel = [[UILabel alloc] initWithFrame:labelFrame];
[footer addSubview:footerLabel];
[footerLabel release];
...
return footer;
}
NB: You might want to scope *footer better to avoid a memory leak or use autorelease.
I'm not sure what the system defaults are for the label it creates to hold the text you supply as the title for footer. I guess you'll need to experiment when creating the footer label as Google hasn't thrown anything useful up.
EDIT: Rather than put all the code in the viewForFooterInSection method I use a custom UIView;
#interface CustomHeaderView : UIView {
NSString *headerTitle;
}
#property (nonatomic, retain) NSString *headerTitle;
#end
#implementation CustomHeaderView
#synthesize headerTitle;
- (id)initWithFrame:(CGRect)frame {
if ((self = [super initWithFrame:frame])) {
// create frame with padding
CGRect labelFrame = CGRectMake(8, 8, frame.size.width - 16, frame.size.height - 16);
UILabel *headerText = [[UILabel alloc] initWithFrame:labelFrame];
[headerText setNumberOfLines:0];
[headerText setFont:[UIFont boldSystemFontOfSize:14.0]];
[self addSubview:headerText];
[headerText release];
}
return self;
}
- (void)setHeaderTitle:(NSString *)title {
[title retain];
[headerTitle release];
UILabel *label = [[self subviews] objectAtIndex:0];
[label setText:title];
[label sizeToFit];
CGRect viewFrame = [self frame];
CGRect labelFrame = [label frame];
viewFrame.size.height = labelFrame.size.height + 16;
[self setFrame:viewFrame];
[self setNeedsLayout];
headerTitle = title;
}
- (void)dealloc {
[headerTitle release];
[super dealloc];
}
#end
This allows me to set my title text and have the header resize for the content. I lazy load this in my view controller;
#interface MyViewController
{
UIView *headerView;
}
- (UIView *) headerView;
#end
#implementation MyViewController
- (UIView *) headerView {
if(headerView)
return headerView;
float w = [[self view] bounds].size.width;
// height irrelevant as long as non zero custom view will resize
CGRect headerFrame = CGRectMake(0, 0, w, 32);
headerView = [[CustomHeaderView alloc] initWithFrame:headerFrame];
return headerView;
}
- (UIView *) tableView:(UITableView *)tv viewForHeaderInSection:(NSInteger)sec {
return [self headerView];
}
- (void) viewWillAppear:(BOOL)animated {
[(CustomHeaderView *)[self headerView] setHeaderTitle:#"My Custom Header"]];
}
#end

Answer 2

Make sure u return proper height in - (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section; delegate method.