设置 UISearchBar 输入字体颜色 和 默认字体颜色

UISearchBar *searchBar = [[UISearchBaralloc]
initWithFrame:CGRectMake(0,0,
210, 44)];
serchBar.searchBarStyle = UISearchBarStyleMinimal;

serchBar.delegate = self;

serchBar.placeholder = @"输入搜索内容";

 // Get the instance of the UITextField of the search bar
UITextField *searchField = [searchBar
valueForKey:@"_searchField"];
    
   // Change search bar text color
searchField.textColor = [UIColorblackColor];
    
   // Change the search bar placeholder text color
[searchFieldsetValue:[UIColorblackColor]forKeyPath:@"_placeholderLabel.textColor"];