改uisearchbar右边取消按钮的图片

如下代码所示 更改

forSearchBarIcon:UISearchBarIconClear属性即可

    [self.searchBar setImage:[UIImage imageNamed:@"aaa"]            forSearchBarIcon:UISearchBarIconClear                       state:UIControlStateSelected];

    [self.searchBar setImage:[UIImage imageNamed:@"aaa"]            forSearchBarIcon:UISearchBarIconSearch                       state:UIControlStateNormal];