UIActionSheet 用法

UIActionSheet* _sheet    =   [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:ContactTel, nil];
    [_sheet showInView:self.view];
#pragma mark ActionSheetDelegate
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if( buttonIndex == 0 )
    {
    }
}