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Custom fixed UITableView header
// Key sections of code for this implementation are placed below
@interface JSTableWithFixedHeaderViewController ()
@property (strong, nonatomic) UIView *fixedHeaderView;
@end
@implementation JSTableWithFixedHeaderViewController
// The following code will insert our custom fixed header view in the appropriate hierarchy
- (void) viewWillAppear:(BOOL)animated
{
CGSize intrinsicSize = self.fixedHeaderView.intrinsicContentSize;
CGHeight height = (intrinsicSize.height > 0) ? intrinsicSize.height : 30; // replace with some fixed value as needed
CGFloat width = CGRectGetWidth(self.view.bounds);
CGRect frame = CGRectMake(0, 0, width, height);
self.fixedHeaderView.frame = frame;
self.tableView.scrollIndicatorInsets = UIEdgeInsetsMake(height, 0, 0, 0);
UIView *wrapperView = self.tableView.subviews[0]; // this is a bit of a hack solution, but should always pull out the UITableViewWrapperView
[self.tableView insertSubview:self.fixedHeaderView aboveSubview:wrapperView];
}
- (void) scrollViewDidScroll:(UIScrollView *)scrollView
{
// Adjust the header's frame to keep it pinned to the top of the scroll view
CGRect headerFrame = self.fixedHeaderView.frame;
CGFloat yOffset = scrollView.contentOffset.y;
headerFrame.origin.y = MAX(0, yOffset);
self.fixedHeaderView.frame = headerFrame;
// If the user is pulling down on the top of the scroll view, adjust the scroll indicator appropriately
CGFloat height = CGRectGetHeight(headerFrame);
if (yOffset< 0) {
self.tableView.scrollIndicatorInsets = UIEdgeInsetsMake(ABS(yOffset) + height, 0, 0, 0);
}
}
@end
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