UISearchBar &&SearchDisplay

   1,SearchBar改变背景颜色

UIImageView *p_w_picpathView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 44)] ;
p_w_picpathView.backgroundColor = [UIColor  whiteColor];
[searchDisplay insertSubview:p_w_picpathView atIndex:1];B