我需要通过数组中的数组对json进行排序(希望这是有意义的)。在下面的JSON中,我需要按距离/里程对所有项目进行排序。所以我的代码如下,但我注意到了崩溃。
NSArray *beforeSortArray = [jsonDictionary objectForKey:@"items"];
NSSortDescriptor *distanceSortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"distance.miles"
ascending:YES
selector:@selector(localizedStandardCompare:)];
_arrAllKeys = [beforeSortArray sortedArrayUsingDescriptors:@[distanceSortDescriptor]];//CRASHES HERE
我的JSON片段:
{
"items": [
{
"ID": "794",
"title": "Here is a title",
"price": "450.00",
"date_time": "2015-04-18 15:24:23",
"description": "Here is description",
"category_id": "8",
"distance": {
"miles": 6465.5731978902,
"kilometers": 10405.331432585
},
"images": [
"http://myimageurl.com"
],
"latitude": "00.00000",
"longitude": "-00.0000",
"location": "Kansas City KS",
"creationdate": "Posted: Apr 18, 2015",
"sellerUserID": "393",
"seller_email": "email@email.com",
"is_deleted": "0"
},
非常感谢任何帮助。
答案 0 :(得分:0)
在发布答案的人的帮助下,后来将其删除了,这非常有帮助。我不确定为什么它会被删除,因为它让我走上正轨。如果你看到这个,谢谢你。我设法使用以下内容:
_arrAllKeys2 = [jsonDictionary objectForKey:@"items"];
NSSortDescriptor *distanceSortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"distance.miles" ascending:YES];
_arrAllKeys = [_arrAllKeys2 sortedArrayUsingDescriptors:@[distanceSortDescriptor]];