顯示菜單的方法：

1、showInView

2、showFromToolBar:和showFromTabBar

視圖控制類需要是現(xiàn)實(shí)協(xié)議接口UIActionSheetDelegate

@interface HelloController :UIViewController<UIActionSheetDelegate> 
@end 

主要實(shí)現(xiàn)代碼：

- (void)actionSheet:(UIActionSheet*)actionSheetclickedButtonAtIndex:(NSInteger)buttonIndex 
{ 
printf("User Pressed Button %d\n",buttonIndex + 1); 
[actionSheet release]; 
} 
- (void) presentSheet 
{ 
UIActionSheet *menu = [[UIActionSheetalloc] 
initWithTitle: @"FileManagement" 
delegate:self 
cancelButtonTitle:@"Cancel" 
destructiveButtonTitle:@"DeleteFile" 
otherButtonTitles:@"Rename File", @"EmailFile", nil]; 
[menu showInView:self.view]; 
} 

類學(xué)習(xí)

UIActionSheet類

繼承UIView

Use the UIActionSheet class to presentthe user with a set of alternatives for how to proceed with a giventask. You can also use action sheets to prompt the user to confirma potentially dangerous action. The action sheet contains anoptional title and one or more buttons, each of which correspondsto an action to take. 

使用UIActionSheet類呈現(xiàn)給用戶一系列交替選項(xiàng)用于決定如何處理所給的任務(wù)。你也可以使用動(dòng)作表來(lái)提示用戶確認(rèn)具有潛在危險(xiǎn)的動(dòng)作。動(dòng)作表包含可選標(biāo)題和1個(gè)或多個(gè)按鈕，每個(gè)按鈕對(duì)應(yīng)響應(yīng)所給的動(dòng)作。

Creating Action Sheets

–initWithTitle:delegate:cancelButtonTitle:destructiveButtonTitle:otherButtonTitles: 

Setting Properties

delegate  property 
title  property 
visible  property 
actionSheetStyle property 

Configuring Buttons

–addButtonWithTitle: 
numberOfButtons property 
–buttonTitleAtIndex: 
cancelButtonIndex property 
destructiveButtonIndex property 
firstOtherButtonIndex property 

Presenting the Action Sheet

–showFromTabBar: 
–showFromToolbar: 
–showInView: 
–showFromBarButtonItem:animated: 
–showFromRect:inView:animated: 

Dismissing the Action Sheet

–dismissWithClickedButtonIndex:animated: 

備注：比對(duì)學(xué)習(xí)下UIAlertView，你會(huì)發(fā)現(xiàn)這兩個(gè)類基本類似

這里還有一組常量值

UIActionSheetStyle

Specifies the style of an actionsheet.

typedef enum { 
UIActionSheetStyleAutomatic  =-1, 
UIActionSheetStyleDefault  = UIBarStyleDefault, 
UIActionSheetStyleBlackTranslucent =UIBarStyleBlackTranslucent, 
UIActionSheetStyleBlackOpaque  =UIBarStyleBlackOpaque, 
} UIActionSheetStyle; 

Constants

UIActionSheetStyleAutomatic

Takes the appearance of the bottom bar if specified; otherwise,same as UIActionSheetStyleDefault.

UIActionSheetStyleDefault

 Thedefault style.

UIActionSheetStyleBlackTranslucent

 Ablack translucent style.

UIActionSheetStyleBlackOpaque

 Ablack opaque style.

協(xié)議接口學(xué)習(xí)

UIActionSheetDelegate協(xié)議接口

The UIActionSheetDelegate protocoldefines the methods a delegate of a UIActionSheet object shouldimplement. The delegate implements the button actions and any othercustom behavior. Some of the methods defined in this protocol areoptional.

Responding to Actions

–actionSheet:clickedButtonAtIndex: 

Customizing Behavior

–willPresentActionSheet: 
–didPresentActionSheet: 
–actionSheet:willDismissWithButtonIndex: 
–actionSheet:didDismissWithButtonIndex: 

Canceling

–actionSheetCancel: