Displaying array of data into the table view - ios

Question

I am able to navigate to the table view But my table is not showing any data neither it is showing error, I want to save my data to core data and want to display it to the table view but it is not showing anything.
Here is some code snippet of my application -
On clicking of save button -
- (IBAction)saveDataButton:(id)sender {
NSManagedObjectContext *context = [self manageobjectcontext];
// NSManagedObject *newemployee = [NSEntityDescription insertNewObjectForEntityForName:#"Employee" inManagedObjectContext:context];
if (self.employeeDB) {
[self.employeeDB setValue:self.empName.text forKey:#"name"];
[self.employeeDB setValue:self.empEmail.text forKey:#"email"];
[self.employeeDB setValue:self.empDesignation.text forKey:#"designation"];
// [self.employeeDB setValue:self.uploadImage.imageView forKey:#"image"];
}
else{
NSManagedObject *newemployee = [NSEntityDescription insertNewObjectForEntityForName:#"Employee" inManagedObjectContext:context];
[newemployee setValue:self.empName.text forKey:#"name"];
[newemployee setValue:self.empEmail.text forKey:#"email"];
[newemployee setValue:self.empDesignation.text forKey:#"designation"];
}
NSError *error = nil;
if (![context save:&error])
{
NSLog(#"Cant save %# %#",error,[error localizedDescription]);
}
UIViewController *objOfView = [[UIViewController alloc]initWithNibName:#"SecondViewController" bundle:nil];
[self.navigationController pushViewController:objOfView animated:YES];
}
Here is my second view controller code for displaying data into the table view -
-(NSManagedObjectContext *)manageobjectcontext{
NSManagedObjectContext *context = nil;
_delegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
if ([_delegate respondsToSelector:#selector(persistentContainer)]) {
context = _delegate.persistentContainer.viewContext;
}
return context;
}
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
NSManagedObjectContext *manageobjectcontext = [self manageobjectcontext];
NSFetchRequest *fetchrequest = [[NSFetchRequest alloc]initWithEntityName:#"Employee"];
self.employeeArray = [[manageobjectcontext executeFetchRequest:fetchrequest error:nil]mutableCopy];
[self.emplyoyeeTableView reloadData];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.employeeArray.count;
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"cell" forIndexPath:indexPath];
NSManagedObject *emp = [self.employeeArray objectAtIndex:indexPath.row];
[cell.textLabel setText:[NSString stringWithFormat:#"%#",[emp valueForKey:#"name"]]];
[cell.detailTextLabel setText:[NSString stringWithFormat:#"%#",[emp valueForKey:#"email"]]];
[cell.detailTextLabel setText:[NSString stringWithFormat:#"%#",[emp valueForKey:#"designation"]]];
// [cell.imageView setImage:[emp valueForKey:#"image"]];
return cell;
}
-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}

Answer 1

`- (void)viewDidLoad
{
[super viewDidLoad];
self.employeeArray=[[NSMutableArray alloc] init]; //do this step
// Do any additional setup after loading the view.
}`

Answer 2

Seems like you are not implemeting and setting your tableview delegates properly. Try
#interface YourClass ()<UITableViewDelegate, UITableViewDataSource> {
- (void)viewDidLoad {
[super viewDidLoad];
self.employeeArray=[[NSMutableArray alloc] init]; //do this
tableView.dataSource = self
tableview.delegate = self
// Do any additional setup after loading the view.
}
}