iOS開發(fā)調用SearchBar報錯：

?Access to UISearchBar's _searchField ivar is prohibited. This is an application bug'

出現原因： iOS 13 系統(tǒng)禁止通過 KVC 訪問一些方式

UITextField*textfield = [searchBarvalueForKey:@"_searchField"];[textfieldsetValue:KFont(12)forKeyPath:@"_placeholderLabel.font"];

解決辦法：

UITextField*textfield = [searchBarvalueForKey:@"searchField"];[textfieldsetValue:KFont(12)forKeyPath:@"placeholderLabel.font"];