我正在尝试断言数组有了这个-(void)searchBar:(UISearchBar*)searchBartextDidChange:(NSString*)text{if(text.length==0){isFiltered=FALSE;}else{isFiltered=true;filteredListCustomersArray=[[NSMutableArrayalloc]initWithCapacity:[customersArraycount]];[filteredListCustomersArrayremoveAllObjects];NSPredicate*filterPre