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;
}

用谓词取得匹配的搜索结果列表，清空搜索记录，展现搜索结果