多个UIActionSheets在同一个委托

我正在写益智游戏。 当用户按下检查button，我看他们input的解决scheme是否正确。 根据结果​​，我为他们提供了两个行动表之一。 现在我只是有一些NSLog语句来确保事情得到调用，但只有其中一个工作表似乎正常工作。

当我单击showErrorsActionSheet中的button时，没有任何东西被调用 。 操作表从屏幕上消失，但日志从不打印。

我怀疑它有两个行为表单声明到同一个委托（自我）

- (void) checkSolution { //code determines the value of the BOOL allCorrect if (allCorrect) { //IF ALL OF THE LETTERS WERE CORRECT //display UIAlertView; NSLog(@"allCorrect"); UIActionSheet *levelCompleteActionSheet = [[UIActionSheet alloc] initWithTitle:@"Congratulations! You Have Finished the Level!" delegate:self cancelButtonTitle:@"Review my work" destructiveButtonTitle:@"Choose next puzzle" otherButtonTitles:nil, nil]; [levelCompleteActionSheet showInView:self.view]; [levelCompleteActionSheet release]; } else { //[self showIncorrectLettersInRed]; UIActionSheet *showErrorsActionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry, thats not right. Show errors in red?" delegate:self cancelButtonTitle:@"No Thanks, I'll keep trying" destructiveButtonTitle:@"Yes please, I'm stuck!" otherButtonTitles:nil, nil]; [showErrorsActionSheet showInView:self.view]; [showErrorsActionSheet release]; } } 

应该被调用的方法是：

 - (void) levelCompleteActionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex { if (buttonIndex != [actionSheet cancelButtonIndex]) { NSLog(@"return to levelSelect"); //pushViewController:levelSelect } else { NSLog(@"continue to examine solution"); } } - (void) showErrorsActionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex { if (buttonIndex != [actionSheet cancelButtonIndex]) { NSLog(@"show errors in red"); } else { NSLog(@"continue to try"); } } 

我已经在接口文件中声明了UIActionSheet协议，如下所示：

 @interface GamePlay : UIViewController <UIActionSheetDelegate> { 

Answer 1

为每个actionSheet设置一个标签，然后在UIActionSheet委托中使用一个switch语句。

分配一个标签

 - (void)checkSolution { if (allCorrect) { UIActionSheet *levelCompleteActionSheet = [[UIActionSheet alloc] initWithTitle:@"Congratulations! You Have Finished the Level!" delegate:self cancelButtonTitle:@"Review my work" destructiveButtonTitle:@"Choose next puzzle" otherButtonTitles:nil, nil]; [levelCompleteActionSheet setTag: 0]; [levelCompleteActionSheet showInView:self.view]; [levelCompleteActionSheet release]; } else { UIActionSheet *showErrorsActionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry, thats not right. Show errors in red?" delegate:self cancelButtonTitle:@"No Thanks, I'll keep trying" destructiveButtonTitle:@"Yes please, I'm stuck!" otherButtonTitles:nil, nil]; [showErrorsActionSheet setTag: 1]; [showErrorsActionSheet showInView:self.view]; [showErrorsActionSheet release]; } } 

UIActionSheet委托

 - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { switch ( actionSheet.tag ) { case 0: /* levelCompleteActionSheet */ { switch ( buttonIndex ) { case 0: /* 1st button*/ break; case 1: /* 2nd button */ break; } } break; case 1: /* showErrorsActionSheet */ break; } } 

这个类也可以应用在其他任何地方，包括levelCompleteActionSheet:和showErrorsActionSheet: 唯一的区别是，您需要为每个actionSheet创build一个iVar，而不是在checkSolution中创build它们。

Answer 2

UIActionSheet将在其委托上调用的方法是UIActionSheetDelegate协议中列出的方法。

http://developer.apple.com/library/ios/#documentation/uikit/reference/UIModalViewDelegate_Protocol/UIActionSheetDelegate/UIActionSheetDelegate.html

要被调用，你的方法必须是这些方法之一。 我没有看到该协议列出的levelCompleteActionSheet或showErrorsActionSheet ！ :)你的方法必须命名为actionSheet:clickedButtonAtIndex:而不是你整个布料中的某个名字。

Answer 3

使用标签解决这个问题

levelCompleteActionSheet.tag = 100;

showErrorsActionSheet.tag = 101;

 - (void) levelCompleteActionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex { if(actionSheet.tag == 100){ // levelCompleteActionSheet implement your required function } else if(actionSheet.tag == 101){ // showErrorsActionSheet implement your required function } }