获取请求-显示来自API的数据

Question

http://api.testmy.co/user/files

我需要获取数据并在我的表格视图中显示该数据，如

grid view

。我对这种类型的处理 API、获取请求等很陌生。如果有人可以解释一下这个

"Get type request"

以及如何在我的表格视图（如网格视图）中显示数据。我只有这个 URL 要做（例如只有上面的 URL）。

任何人都可以帮助我提供一些教程或 git-hub 或任何有关它的想法吗？

Answer 1

我帮助您获取响应。将响应数据保存到数组或字典后，您可以显示到表格视图。

-(void)getResponse  
{
 //just give your URL instead of my URL
 NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL  URLWithString:@"http://api.worldweatheronline.com/free/v1/search.ashx?query=London&num_of_results=3&format=json&key=xkq544hkar4m69qujdgujn7w"]];

 [request setHTTPMethod:@"GET"];

 [request setValue:@"application/json;charset=UTF-8" forHTTPHeaderField:@"content-type"];

 NSError *err;

 NSURLResponse *response;

 NSData *responseData = [NSURLConnection sendSynchronousRequest:request   returningResponse:&response error:&err];

 //You need to check response.Once you get the response copy that and paste in ONLINE JSON VIEWER.If you do this clearly you can get the correct results.    

 //After that it depends upon the json format whether it is DICTIONARY or ARRAY 

 //If it(RESPONSE) starts with dictionary({...}),you need to write coding blow like this

 NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err];

 NSArray *array=[[jsonDict objectForKey:@"search_api"]objectForKey:@"result"];

 //But if it(RESPONSE) starts with array([...]),you need to write coding blow like this

 NSArray *jsonArray = [NSJSONSerialization JSONObjectWithData:responseData options: NSJSONReadingMutableContainers error: &err];
}

如果你想获得网格视图，你最好使用CollectionView。

- (void)viewDidLoad 
{
  [super viewDidLoad];
  [self getResponse];
  UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
  flowLayout.scrollDirection =  UICollectionViewScrollDirectionVertical;
  //Register the custom cell for collection view
  UINib *cellNib = [UINib nibWithNibName:@"CustomCell" bundle:nil];
  [collectionViewHorizontalVertical registerNib:cellNib forCellWithReuseIdentifier:@"cvCell"];
}

//Collection View Delegates method
-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
  return  1;
}

-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
  return jsonArray.count;
}

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
   static NSString *cellIdentifier = @"cvCell";
CustomCell *cell = (CustomCell *)[collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath];
  cell.imgViewCollection.image = [UIImage imageNamed:[jsonArray objectAtIndex:indexPath.row]];

  return cell;
}
- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath 
{
  return CGSizeMake(200, 200); //Please give your required size
}