How to populate UITableView with JSON data? - ios

Question

I'm struggling to figure out what i am doing wrong. I am basically trying to populate the my UITableView with json data. In the console I can see the results but just don't know why the data is not displayed in the tableview. I have looked at similar questions and answers but none is a solution to my problem.
Advice or help please;
#pragma mark - Private method implementation
-(void)loadData{
// Form the query.
#try {
NSString *get =[[NSString alloc] initWithFormat:#""];
NSString *getRegions = [NSString stringWithFormat:#"JSON URL HERE",self.sessionId, self.companyId];
NSURL *url=[NSURL URLWithString:getRegions];
NSLog(#"Get regions: %#", url);
NSData *postData = [get dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:url];
[request setHTTPMethod:#"GET"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setHTTPBody:postData];
//[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"Reponse code: %ld", (long)[response statusCode]);
if ([response statusCode] >= 200 && [response statusCode] < 300)
{
NSString *responseData = [[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"Response ==> %#", responseData);
#try{
NSError *error = nil;
regionsJson = [[NSMutableArray alloc]init];
//[jsonData removeAllObjects];
regionsJson = [NSJSONSerialization JSONObjectWithData:urlData options:NSJSONReadingMutableContainers|NSJSONReadingMutableLeaves error:&error];
NSArray *tblArray = [NSArray arrayWithObject:regionsJson];
}
#catch (NSException *e){
NSLog(#"Try catch block: %#", e);
}
#finally{
// [self.tblRegion reloadData];
NSLog(#"finally");
}
structureJson =[regionsJson valueForKey:#"structure"];
companyJson =[structureJson valueForKey:#"company"];
_barBtnCompanyName.title = [companyJson valueForKey:#"company_name"];
NSLog(#"Get company name: %#", [companyJson valueForKey:#"company_name"]);
for (int i =0 ; i < regionsJson.count; i++){
regionsJson = [companyJson objectForKey:#"regions"];
NSString *regionName = [NSString stringWithFormat:#"%#", [regionsJson valueForKey:#"region_name"]];
NSLog(#"Region name: %#",regionName);
// [regionsJson addObject:regionName];
NSString *alarmCount = [NSString stringWithFormat:#"%#", [regionsJson valueForKey:#"alarm_cnt"]];
NSLog(#"Alarm count: %#", alarmCount);
// [regionsJson addObject:alarmCount];
}
}
}
#catch (NSException * e) {
NSLog(#"Exception: %#", e);
}
// Reload the table view.
[self.tblRegion reloadData];
}
#pragma mark - UITableView method implementation
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
NSLog(#"Number of rows: %lu", (unsigned long)regionsJson.count);
return [regionsJson count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = #"CellRegions";
// Dequeue the cell.
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
// Set the loaded data to the appropriate cell labels.
cell.textLabel.text = [[regionsJson objectAtIndex:indexPath.row] objectForKey:#"region_name"];
cell.detailTextLabel.text = [[regionsJson objectAtIndex:indexPath.row] objectForKey:#"alarm_cnt"];
[cell setAccessoryType: UITableViewCellAccessoryDisclosureIndicator];
NSLog(#"Table cell: %#", cell);
return cell;
}

Answer 1

My code is just fine, i did a stupid omission of this declaration.
-(void)viewDidLoad{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.tblRegion.delegate = self;
self.tblRegion.dataSource = self;
[self loadData];
}