Customizing Section indexes in UITableView in iphone application

• Does any开发者_如何学运维 one have tried to customize default section index displayed in UITableView.
• I want to modify the appearance of UITableView SectionIndex.
• Is it possible to customize it ?
• Is there any delegate methods available for this ?
• What delegate methods should I use - if above question's answer is yes?

• 

It doesn't look like standard index view is customizable.

In my application I just created custom index view instead of standard one. Basically all you need to do here is track touch position in that view and scroll UITableView accordingly. You may also need to add some visual effects - change view's background color on touch and highlight current section title.

https://github.com/Hyabusa/CMIndexBar

Use this plugin from Hyabusa. Simple replacment for UITableView Index that allows setting of colors

CMIndexBar *indexBar = [[CMIndexBar alloc] initWithFrame:CGRectMake(self.view.frame.size.width-35, 10.0, 28.0, self.view.frame.size.height-20)];
[indexBar setIndexes:[NSMutableArray arrayWithObjects:@"A",@"B",@"C",@"D",@"E",@"F",@"G", nil]];
[self.view addSubview:indexBar];
[indexBar release];

Delegate

- (void)indexSelectionDidChange:(CMIndexBar *)IndexBar:(int)index:(NSString*)title;

Swift version:

tableView.sectionIndexBackgroundColor = UIColor.clearColor() //iOS7+
tableView.sectionIndexTrackingBackgroundColor = UIColor.clearColor() //iOS6+
tableView.sectionIndexColor = UIColor.redColor() //iOS6+

To customize the index view height (UITableViewStylePlain style only):

tableView.sectionIndexMinimumDisplayRowCount = 15

tableView.tintColor = UIColor.redColor();

will do it for you

Actually there is not official Apple available to do that. And Apple may reject you app if you do that. If you just wants to customize indexBar then below library may help you.

You can use custom library CollectionIndexTools by Swift(iOS 8+), which you can customize.

https://github.com/ReverseScale/CollectionIndexTools

Here's sample snippet for CollectionIndexTools

lazy var collectionViewIndex: CollectionViewIndex = {
        let collectionViewIndex = CollectionViewIndex()
        collectionViewIndex.indexTitles = ["c", "v", "t", "m", "n", "w", "e", "r", "t", "y", "u", "i", "o", "p", "h", "d", "c", "b", "q"]
        collectionViewIndex.addTarget(self, action: #selector(FakeCollectionViewController.selectedIndexDidChange(_:)), for: .valueChanged)
        collectionViewIndex.translatesAutoresizingMaskIntoConstraints = false
        return collectionViewIndex
    }()