ios - 有人让 UIActionSheet (buttonIndex, delegate) 更像 UIButton (addTarget :action)?

Question

我看到了this tweet作者:Marco Armant:

Subclassed UIActionSheet w/target:action:userInfo: on buttons to avoid delegates/buttonIndex. Didn't someone else do this? Can't find it.

我认为这听起来是个好主意，但我找不到任何人的代码来执行此操作。在我自己去做之前，有人知道吗？

Answer 1

是的，查看我的 github OHActionSheet .

它是使用 block 实现的，所以你可以这样使用它，即使没有在你的源代码中驱逐目标/ Action 代码，最大的好处是所有的东西都位于你的源代码中的同一个地方，并且您可以在同一 Controller 中使用任意数量的 OHActionSheets

NSURL* anURL = ... // some URL (this is only as an example on using out-of-scope variables  in blocks)
[OHActionSheet showSheetInView:yourView
                         title:@"Open this URL?"
             cancelButtonTitle:@"Cancel"
        destructiveButtonTitle:nil
             otherButtonTitles:[NSArray arrayWithObjects:@"Open",@"Bookmark",nil]
                    completion:^(OHActionSheet* sheet,NSInteger buttonIndex) {
   if (buttonIndex == sheet.cancelButtonIndex) {
     NSLog(@"You cancelled");
   } else {
     NSLog(@"You choosed button %d",buttonIndex);
     switch (buttonIndex-sheet.firstOtherButtonIndex) {
       case 0: // Open
         // here you can access the anURL variable even if this code is executed asynchrously, thanks to the magic of blocks!
         [[UIApplication sharedApplication] openURL:anURL];
         break;
       case 1: // Bookmark
       default:
         // Here you can even embed another OHAlertView for example
         [OHAlertView showAlertWithTitle:@"Wooops"
                                 message:@"This feature is not available yet, sorry!"
                            cancelButton:@"Damn"
                            otherButtons:nil
                          onButtonTapped:nil]; // no need for a completion block here
         break;
     } // switch
   }
 }];

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