searchDisplayController用法

#PRagma mark - 搜索栏代理方法- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString{    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name CONTAINS[c] %@", searchString];        if (searchResultList)        [searchResultList removeAllObjects];        searchResultList = [NSMutableArray arrayWithArray:[personList filteredArrayUsingPredicate:predicate]];        return true;}