我从 json 加载数据,然后将其添加到 nsmutablearray 中,如下所示:
- (void)loadData
{
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
// Create array to hold dictionaries
myObject = [[NSMutableArray alloc] init];
NSData *jsonData = [NSData dataWithContentsOfURL:
[NSURL URLWithString:@"http://www.domain.com/json.php"]];
if(jsonData != nil)
{
NSError *error = nil;
id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
if (error == nil){
dispatch_sync(dispatch_get_main_queue(), ^{
// values in foreach loop
for (NSMutableArray *tempArray in jsonObjects) {
[myObject addObject:tempArray];
NSSortDescriptor * sortDesc = [[NSSortDescriptor alloc] initWithKey:@"id.doubleValue" ascending:NO];
[myObject sortUsingDescriptors:[NSArray arrayWithObject:sortDesc]];
[self.tableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:YES];
[self performSelectorOnMainThread:@selector(endAnimating) withObject:nil waitUntilDone:YES];
}
});
}
}
});
}
如果我检查 NSLog " tempArray
" 它看起来没问题,但如果我检查 " myObject
",数据添加到它多次。如何将数据一次添加到我的“ myObject
”数组中?
编辑:
我的 JSON 结果:
[{"id":"7","title":"monkey","thumb":"http:\/\/icon.s.photosight.ru\/img\/8\/e09\/5045427_thumb.jpg","url":"http:\/\/icon.s.photosight.ru\/img\/8\/e09\/5045427_large.jpg","day":"perjantai","date":"0","likes":"2","device_id":"1111","active":"1"},
{"id":"11","title":"Bukashka","thumb":"http:\/\/icon.s.photosight.ru\/img\/f\/b3b\/5078973_thumb.jpg","url":"http:\/\/icon.s.photosight.ru\/img\/f\/b3b\/5078973_large.jpg","day":"perjantai","date":"0","likes":"1","device_id":"1111","active":"1"},
{"id":"12","title":"blya","thumb":"http:\/\/icon.s.photosight.ru\/img\/f\/c1d\/5076251_thumb.jpg","url":"http:\/\/icon.s.photosight.ru\/img\/f\/c1d\/5076251_large.jpg","day":"perjantai","date":"0","likes":"1","device_id":"1111","active":"1"}]
我的 NSLog(@"%@", myObject);
2013-06-12 18:45:52.228 testApp[960:60b] (
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 7;
likes = 2;
thumb = "http://icon.s.photosight.ru/img/8/e09/5045427_thumb.jpg";
title = monkey;
url = "http://icon.s.photosight.ru/img/8/e09/5045427_large.jpg";
}
)
2013-06-12 18:45:52.230 testApp[960:60b] (
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 11;
likes = 1;
thumb = "http://icon.s.photosight.ru/img/f/b3b/5078973_thumb.jpg";
title = Bukashka;
url = "http://icon.s.photosight.ru/img/f/b3b/5078973_large.jpg";
},
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 7;
likes = 2;
thumb = "http://icon.s.photosight.ru/img/8/e09/5045427_thumb.jpg";
title = monkey;
url = "http://icon.s.photosight.ru/img/8/e09/5045427_large.jpg";
}
)
2013-06-12 18:45:52.237 testApp[960:60b] (
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 12;
likes = 1;
thumb = "http://icon.s.photosight.ru/img/f/c1d/5076251_thumb.jpg";
title = blya;
url = "http://icon.s.photosight.ru/img/f/c1d/5076251_large.jpg";
},
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 11;
likes = 1;
thumb = "http://icon.s.photosight.ru/img/f/b3b/5078973_thumb.jpg";
title = Bukashka;
url = "http://icon.s.photosight.ru/img/f/b3b/5078973_large.jpg";
},
{
active = 1;
date = 0;
day = perjantai;
"device_id" = 1111;
id = 7;
likes = 2;
thumb = "http://icon.s.photosight.ru/img/8/e09/5045427_thumb.jpg";
title = monkey;
url = "http://icon.s.photosight.ru/img/8/e09/5045427_large.jpg";
}
)
工作解决方案:danypata
viewDidLoad
总而言之_myObject = [[NSMutableArray alloc] init];
然后
- (void)loadData
{
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
dispatch_async(queue, ^{
NSData *jsonData = [NSData dataWithContentsOfURL:
[NSURL URLWithString:@"http://www.domain.com/json.php"]];
if(jsonData != nil)
{
NSError *error = nil;
id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&error];
if (error == nil){
[myObject removeAllObjects];
for (NSMutableDictionary *tempDict in jsonObjects) {
[myObject addObject:tempDict];
}
NSSortDescriptor * sortDesc = [[NSSortDescriptor alloc] initWithKey:@"id.doubleValue" ascending:NO];
[myObject sortUsingDescriptors:[NSArray arrayWithObject:sortDesc]];
dispatch_sync(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
[self.tableView.pullToRefreshView stopAnimating];
});
}
}
});
}