不兼容的指针类型初始化TaggedUIActionAheet，表达式为UIActionSheet

When I run this:

当我运行这个：

TaggedUIActionSheet *sheet = [[UIActionSheet alloc] 
        initWithTitle:nil
        delegate:self 
        cancelButtonTitle:@"Cancel" 
        destructiveButtonTitle:@"Delete" 
        otherButtonTitles:@"Save to photos",@"Email",nil];
TaggedUIActionShee