self.searchBar.backgroundColor = leftMainColor;
self.searchBar.backgroundImage=[[UIImage alloc]init];
if (@available(iOS 13.0, *)){
self.searchBar.searchTextField.backgroundColor=UIColor.whiteColor;
}else{
UITextField*searchField = [self.searchBar valueForKey:@"_searchField"];
searchField.backgroundColor=UIColor.whiteColor;
}