#import <UIKit/UIKit.h>@interface RootViewController : UIViewController<UIActionSheetDelegate>@end 

//點擊任何處，彈出UIActionSheet-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{  UIActionSheet *sheet=[[UIActionSheet alloc]initWithTitle:@"標題" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil, nil];  // 逐個添加按鈕（比如可以是數組循環）  [sheet addButtonWithTitle:@"Item A"];  [sheet addButtonWithTitle:@"Item B"];  [sheet addButtonWithTitle:@"Item C"];  // 同時添加一個取消按鈕  [sheet addButtonWithTitle:@"Cancel"];  sheet.cancelButtonIndex = sheet.numberOfButtons-1;  [sheet showInView:self.view];}