Get request -to display data from API

Question

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

I need to fetch data and to display that data in my tableview like grid view. I am new to this type of handling API, get request and all. If any one can explain about this "Get type request" and how to display the data in my tableview like grid view. I only have this URL to do ( for example only above URL).

Can any help help me with some tutorial or git-hub or any idea about it.

Answer 1

I help you to fetch the response.Once you save the response data to array or dictionar you can show to the tableview.

-(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];
}

If you want to get grid view,you better to use 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
}