UIActionSheet用法

  //上拉菜单
 1 UIActionSheet* sheet = [[UIActionSheet alloc]
                               initWithTitle:nil
                               delegate:self
                               cancelButtonTitle:@"取消"
                               destructiveButtonTitle:@"确定"
                               otherButtonTitles:@"拍照",@"选择本地照片",nil];
     [sheet showInView:self.view];

 (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
 {
     if (buttonIndex == ) {
         [self showAlert:@"拍照"];
     }else if (buttonIndex == ) {
         [self showAlert:@"选择本地照片"];
     }else if(buttonIndex == ) {
         [self showAlert:@"取消"];
     }else if(buttonIndex == ) {
         [self showAlert:@"确定"];
     }   

 }
 - (void)actionSheetCancel:(UIActionSheet *)actionSheet{    

 }
 -(void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex{    

 }
 -(void)actionSheet:(UIActionSheet *)actionSheet willDismissWithButtonIndex:(NSInteger)buttonIndex{    

 } 

 [self showAlert:@"拍照"];

 3 //弹出对话框
 - (void)showAlert:(NSString *)message{
     UIAlertView *alertView = [[UIAlertView alloc]
                               initWithTitle:nil
                               message:message
                                delegate:self
                                cancelButtonTitle:@"Cancel"
                               otherButtonTitles:@"OK", nil];

     [alertView show];
 }