Question

我正在解析一个XML文件，该文件只包含XML中每个项目的标题，描述和链接。我在使用pubDate部分之前已经完成了排序，但就此而言，我希望它可以按字母顺序排列，也可以按XML中列出的顺序排序。这样做的建议？在过去的版本中，我对它进行了如下排序：

for (RSSEntry *entry in entries) {

                    int insertIdx = [_allEntries indexForInsertingObject:entry sortedUsingBlock:^(id a, id b) {
                        RSSEntry *entry1 = (RSSEntry *) a;
                        RSSEntry *entry2 = (RSSEntry *) b;
                        return [entry1.articleDate compare:entry2.articleDate];
                    }];

                    [_allEntries insertObject:entry atIndex:insertIdx];
                    [self.tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:insertIdx inSection:0]]
                                          withRowAnimation:UITableViewRowAnimationRight];

Answer 1

在viewDidLoad（）中添加以下内容，用于按升序对数组数据进行排序。

        artistArray=[[NSMutableArray alloc] init];
        NSMutableDictionary *dic=[[NSMutableDictionary alloc] init];
        [dic setObject:@"ravi" forKey:@"artist"];
        [artistArray addObject:dic];
        [dic release];

        dic=[[NSMutableDictionary alloc] init];
        [dic setObject:@"srinu" forKey:@"artist"];
        [artistArray addObject:dic];
        [dic release];

        dic=[[NSMutableDictionary alloc] init];
        [dic setObject:@"bobby" forKey:@"artist"];
        [artistArray addObject:dic];
        [dic release];
        dic=[[NSMutableDictionary alloc] init];
        [dic setObject:@"xyz" forKey:@"artist"];
        [artistArray addObject:dic];
        [dic release];

        NSLog(@"before sorting--%@",artistArray);


        NSSortDescriptor *sortByName=[NSSortDescriptor sortDescriptorWithKey:@"artist" ascending:YES];
        NSArray *sortDescriptors=[NSArray arrayWithObject:sortByName];
         NSArray *sortedArray=[artistArray sortedArrayUsingDescriptors:sortDescriptors];
        NSLog(@"After sorting---%@",sortedArray);

iOS按字母顺序将RSS解析为TableView

1 个答案: