Question

我有两个NSMutableArrays：searchResults和searchResultsDetails。我使用NSPredicate对searchResults进行排序，并希望searchResultsDetails根据searchResults中使用NSPredicate删除的对象进行排序。

例如，假设searchResults最初包含1,2,3,4,5，searchResultsDetails最初包含A，B，C，D，E。因此，在使用NSPredicate对其进行排序后，searchResults包含1,2,5，我希望searchResultsDetails包含A，B，E。我怎么能做到这一点？

这是我用来排序第一个数组的代码。

NSPredicate *resultPredicate = [NSPredicate
                                predicateWithFormat:@"self CONTAINS %@",
                                searchText];

self.searchResults = [self.lines filteredArrayUsingPredicate:resultPredicate];

Answer 1

NSMutableArray *firstArray = [[NSMutableArray alloc] initWithObjects:@"ashu",@"toremove",@"ashuabc",@"toremove",@"ashu12345", nil];
NSMutableArray *descriptionArray = [[NSMutableArray alloc] initWithObjects:@"description for ashu",@"description for non ashu",@"description for ashuabc",@"description for nopnashu",@"description for ashu12345", nil];

NSMutableArray *removedIndexArray = [[NSMutableArray alloc] init];
NSMutableArray *sortedArray = [[NSMutableArray alloc] init];

for (int i = 0; i < [firstArray count]; i++) {
    NSString *tempStr = [firstArray objectAtIndex:i];

    if ([tempStr rangeOfString:@"ashu"].location == NSNotFound) {
        [removedIndexArray addObject:[NSString stringWithFormat:@"%d",i]];
    } else {
        [sortedArray addObject:tempStr];
    }
}

for (int j = 0; j < [removedIndexArray count]; j++) {
    [descriptionArray removeObjectAtIndex:[[removedIndexArray objectAtIndex:j] integerValue]];
}

NSLog(@"%@",descriptionArray);
NSLog(@"Sorted array is :: %@",sortedArray);

如何根据使用NSPredicate排序的第一个数组对第二个数组进行排序？

1 个答案: