Question

这是我的代码。请帮助。

NSDictionary *xmlDict = [NSDictionary dictionaryWithXMLString:Str];
NSArray *fixtureslist1 = [[xmlDict objectForKey:@"Matches"] objectForKey:@"eMatches"];
NSMutableDictionary *dictionaryByDate = [NSMutableDictionary new];

for(NSDictionary *dictionary in fixtureslist1)
{
    NSString *dateString = dictionary[@"MatchDate"];
    NSMutableArray *arrayWithSameDate = self.resultsSection[dateString];
    if(! arrayWithSameDate)
    {
        arrayWithSameDate = [NSMutableArray new];
        self.resultsSection[dateString] = arrayWithSameDate;
    }
    [arrayWithSameDate addObject: dictionary];
}
//NSLog(@"dictionaryByDate:%@",self.resultsSection);
NSSortDescriptor *descriptor=[[NSSortDescriptor alloc] initWithKey:@"self" ascending:NO];
NSArray *descriptors=[NSArray arrayWithObject: descriptor];
reverseOrder=[[self.resultsSection allKeys] sortedArrayUsingDescriptors:descriptors];
NSLog(@"results:%@",reverseOrder);

Answer 1

@property (nonatomic, retain) NSMutableDictionary *sections;

在viewDidLoad

中

self.sections = [[NSMutableDictionary alloc]init];
 [self setupSections];

- (void)setupSections
{
    BOOL found;

    // Loop through the items and create our keys
    for (YourObject *item in self.items)
    {
        NSString *date= item.Matchdate;
        found = NO;
        for (NSString *str in [self.sections allKeys])
        {
            if ([str isEqualToString:date])
            {
                found = YES;
            }
        }
        if (!found)
        {
            [self.sections setObject:[[NSMutableArray alloc] init] forKey:date];
        }
    }
    // Loop again and sort the items into their respective keys
    for (YourObject *item in self.items)
    {
        [[self.sections objectForKey:item.MatchDate addObject:item];
    }

    for (NSString *key in [self.sections allKeys])
    {
        [[self.sections objectForKey:key] sortUsingDescriptors:[NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@“MatchDate" ascending:NO]]];
    }
//Reload tableView by using self.sections
    [self.tableView reloadData];
}


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    return  [[self.sections allKeys] count];
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    NSString *sectionHeader = @"";
    if(!isFiltered)
    {
        sectionHeader = [[[self.sections allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)] objectAtIndex:section];
    }
    return sectionHeader;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    int rowCount;
    rowCount = [[self.sections objectForKey:[[[self.sections allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)] objectAtIndex:section]] count];

    return rowCount;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell;

    cell = (UITableViewCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
        if (cell == nil)
        {
            cell = [[UITAbleViewCellalloc] initWithStyle:UITableViewCellStyleSubtitle
                                              reuseIdentifier:CellIdentifier];
        }
    YourObject *item = [[self.sections objectForKey:[[[self.sections allKeys] sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)] objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
    return cell;
}

Answer 2

首先，您必须解析xml响应，并生成字典数组。然后您可以使用以下代码进行排序

NSSortDescriptor *sortDescriptor;
sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"date"
                                              ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:sortDescriptor];
NSArray *sortedArray;
sortedArray = [arrayOfDictionaries sortedArrayUsingDescriptors:sortDescriptors];

从iOS中的xml按日期分组字典数组

2 个答案: