行为表

// UIActionSheet UIAlertView

//  destructive  慎重操作的button标题

UIActionSheet *sheet = [[UIActionSheet alloc]initWithTitle:@"tips" delegate:nil cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Delete" otherButtonTitles:@"Save", nil];

//  showInView 在视图上显示

[sheet showInView:self.view];