[ iOS ] api連線

API連線並更新主線程

要先在info裡面開啟權限
App Transport Security Settings -> Allow Arbitrary Loads value:YES

NSURL *url = [NSURL URLWithString:urlStr];
    
    NSURLSession *session = [NSURLSession sharedSession];
    
    NSURLSessionDataTask *dt = [session dataTaskWithURL:url completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        
        if (!error) {
            
            //NSLog(@"%@", data);
            
            dancePrograms = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
            
            NSLog(@"%@", dancePrograms);
            
            //更新主線程UI
            dispatch_async(dispatch_get_main_queue(), ^{
                //重新刷新tableview
                [tbView reloadData];
            
            });
            
            
        } else {
            //處理Error
        }
        
        
    }];
    //連接資料
    [dt resume];