Category on UIActionSheet to use inline block callbacks instead of delegate callbacks.
UIActionSheet was created in a time before blocks, ARC, and judging by its naming – touch screens too. Who “clicks” on an action sheet anyway?
Lets modernize this shizzle with some blocks goodness.
typedef void (^UIActionSheetBlock) (UIActionSheet *actionSheet);
typedef void (^UIActionSheetCompletionBlock) (UIActionSheet *actionSheet, NSInteger buttonIndex);
@property (copy, nonatomic) UIActionSheetCompletionBlock tapBlock;
@property (copy, nonatomic) UIActionSheetCompletionBlock willDismissBlock;
@property (copy, nonatomic) UIActionSheetCompletionBlock didDismissBlock;
@property (copy, nonatomic) UIActionSheetBlock willPresentBlock;
@property (copy, nonatomic) UIActionSheetBlock didPresentBlock;
@property (copy, nonatomic) UIActionSheetBlock cancelBlock;You can create and show an action sheet in a single call, e.g.
[UIActionSheet showInView:self.view
withTitle:@"Are you sure you want to delete all the things?"
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:@"Delete all the things"
otherButtonTitles:@[@"Just some of the things", @"Most of the things"]
tapBlock:^(UIActionSheet *actionSheet, NSInteger buttonIndex) {
NSLog(@"Chose %@", [actionSheet buttonTitleAtIndex:buttonIndex]);
}];The full suite of action methods are supported, including showFromTabBar:, showFromToolbar:, showInView:, showFromBarButtonItem:animated: and showFromRect:inView:animated:.
If you need further customization, you can create and configure an action sheet as you usually would, and then assign blocks to the action sheet, e.g.
UIActionSheet *as = [[UIActionSheet alloc] initWithTitle:@"Choose a coffee"
delegate:nil
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Flat White", @"Latte", @"Cappuccino", @"Long Black", nil];
as.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
as.tapBlock = ^(UIActionSheet *actionSheet, NSInteger buttonIndex){
NSLog(@"Chose %@", [actionSheet buttonTitleAtIndex:buttonIndex]);
};
[as showInView:self.view];If a delegate was set on the action sheet, the delegate will be preserved and the blocks will be executed before the delegate is called.
Blocks - so iOS 4.0 and later. Compatible with both ARC and traditional retain/release code.
Since version 0.9 the headers use the new Objective-C nullability annotations for nicer interoperability with Swift, so you will need Xcode 6.3 or later to compile it.
Add UIActionSheet+Blocks.h/m into your project, or pod 'UIActionSheet+Blocks' using CocoaPods.
In your code, either #import <UIActionSheet+Blocks/UIActionSheet+Blocks.h> (Objective-C header), @import UIActionSheet_Blocks; (Objective-C module), or import UIActionSheet_Blocks (Swift).
If you’d like similar functionality on UIAlertView too, check out twin-sister UIAlertView+Blocks.
Check out UIAlertController+Blocks if you would like to migrate to UIAlertController, and use a familiar API.