NSURLSession

#define MAC @"http://127.0.0.1/1506C.json"

NSURL *url=[NSURL URLWithString:MAC];

NSURLSession *see=[NSURLSession sharedSession];

NSURLSessionDataTask *tas=[see dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

dic=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

//刷新表格

dispatch_async(dispatch_get_main_queue(), ^{

[tab reloadData];

});

}];

[tas resume];

tab =[[UITableView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height) style:UITableViewStyleGrouped];

tab.delegate=self;

tab.dataSource=self;

[self.view addSubview:tab];

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

return  dic.count;

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;

{

NSString *key=[dic.allKeys objectAtIndex:section];

return [[dic objectForKey:key]count];

}

-(UITableViewCell*)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

static NSString *str=@"cell";

UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:str];

if (cell==nil)

{

cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:str];

}

NSString *key=[dic.allKeys objectAtIndex:indexPath.section];

cell.textLabel.text=[[[dic objectForKey:key]objectAtIndex:indexPath.row]objectForKey:@"name"];

cell.detailTextLabel.text=[[[dic objectForKey:key]objectAtIndex:indexPath.row]objectForKey:@"like"];

return cell;

}

-(NSString*)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section

{

return [dic.allKeys objectAtIndex:section];

}