json解析

@interface ViewController (){

    NSDictionary *_dic;

    UITableView *_tbv;

}

@end

#define TEST_URL @"HTTP://127.0.0.1/1604C.json"

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    _tbv = [[UITableView alloc]initWithFrame:self.view.frame style:UITableViewStyleGrouped];

    _tbv.delegate = self;

    _tbv.dataSource = self;

    [self.view addSubview:_tbv];

    // Do any additional setup after loading the view, typically from a nib.

    NSURLSession *session = [NSURLSession sharedSession];

    NSURLSessionTask *task = [session dataTaskWithURL:[NSURL URLWithString:TEST_URL] completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

#if 0

        //系统自带的方式解析

        self->_dic = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

#elif 1

        //SBJson

        SBJsonParser *js = [[SBJsonParser alloc]init];

        self->_dic = [js objectWithData:data];

#elif 0

        //json kit

        self->_dic = [data objectFromJSONData];

#endif

        //回到主线程

        dispatch_async(dispatch_get_main_queue(), ^{

            [self->_tbv reloadData];

        });

    }];

    [task resume];

}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

    return _dic.allKeys.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 *identifier = @"identifier";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];

    if (cell == nil) {

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

    }

    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];

}