IOS开发代码分享之设置UISearchBar的背景颜色

今天用到uisearchbar，之前网上提供的方法已经不能有效的去除掉它的背景色了，修改背景色方法如下：

mysearchbar.backgroundcolor = rgbacolor(249,249,249,1);
    mysearchbar.backgroundimage = [self imagewithcolor:[uicolor clearcolor] size:mysearchbar.bounds.size];
 
//取消searchbar背景色
- (uiimage *)imagewithcolor:(uicolor *)color size:(cgsize)size
{
    cgrect rect = cgrectmake(0, 0, size.width, size.height);
    uigraphicsbeginimagecontext(rect.size);
    cgcontextref context = uigraphicsgetcurrentcontext();
     
    cgcontextsetfillcolorwithcolor(context, [color cgcolor]);
    cgcontextfillrect(context, rect);
     
    uiimage *image = uigraphicsgetimagefromcurrentimagecontext();
    uigraphicsendimagecontext();
     
    return image;
}