Error: index 1 beyond bounds [0 .. 0] - objective-c

Question

I am a rookie in Xcode and I have been using the UITableViewController which shows this error.
This is the error message:
* Terminating app due to uncaught exception 'NSRangeException', reason: '* -[__NSArrayM objectAtIndex:]: index 1 beyond bounds [0 .. 0]'
* First throw call stack:
(0x1c91012 0x10cee7e 0x1c330b4 0x36d0 0xc58d5 0xc5b3d 0xacce83 0x1c50376 0x1c4fe06 0x1c37a82 0x1c36f44 0x1c36e1b 0x1beb7e3 0x1beb668 0x1665c 0x2132 0x2065)
libc++abi.dylib: terminate called throwing an exception
(lldb)
This is my code:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if (indexPath.row == 0) {
NSString *strURL = [NSString stringWithFormat:#"http://localhost:8888/GetDetail.php?choice=row0"];
NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];
arrayDataFromServer2 = [[NSMutableArray alloc]init];
NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];
id objName;
while ( objName = [enumForNames nextObject]) {
[arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, #"name", nil]];
}
NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];
row1 = [nn intValue];
NSLog(#"%d", row1);
CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:#"Profile"];
[self.navigationController pushViewController:profile animated:YES];
profile.profileid = row1;
NSLog(#"%d", profile.profileid);
}
if (indexPath.row == 1) {
NSString *strURL = [NSString stringWithFormat:#"http://localhost:8888/GetDetail.php?choice=row1"];
NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];
arrayDataFromServer2 = [[NSMutableArray alloc]init];
NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];
id objName;
while (objName = [enumForNames nextObject]) {
[arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, #"name", nil]];
}
NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];
row1 = [nn intValue];
NSLog(#"%d", row1);
CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:#"Profile"];
[self.navigationController pushViewController:profile animated:YES];
profile.profileid = row1;
NSLog(#"%d", profile.profileid);
}
if (indexPath.row == 2) {
NSString *strURL = [NSString stringWithFormat:#"http://localhost:8888/GetDetail.php?choice=row2"];
NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];
arrayDataFromServer2 = [[NSMutableArray alloc]init];
NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];
id objName;
while ( objName = [enumForNames nextObject]) {
[arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, #"name", nil]];
}
NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];
row1 = [nn intValue];
NSLog(#"%d", row1);
CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:#"Profile"];
[self.navigationController pushViewController:profile animated:YES];
profile.profileid = row1;
NSLog(#"%d", profile.profileid);
}
if (indexPath.row == 3) {
NSString *strURL = [NSString stringWithFormat:#"http://localhost:8888/GetDetail.php?choice=row3"];
NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];
arrayDataFromServer2 = [[NSMutableArray alloc]init];
NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];
id objName;
while ( objName = [enumForNames nextObject]) {
[arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, #"name", nil]];
}
NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];
row1 = [nn intValue];
NSLog(#"%d", row1);
CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:#"Profile"];
[self.navigationController pushViewController:profile animated:YES];
profile.profileid = row1;
NSLog(#"%d", profile.profileid);
}
}
When I click on the second cell (index.row == 1) this error would occur.
I have used breakpoint and the error was on the line:
"NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];"
Please Help!

Answer 1

Swift 4
after more time i am get the love for this Error 😄
when you use the tableView from the storyboard and implementing in your code :
hint that and compare :
between the number of section and numberOfRowsInSection == storyboard and code
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 3
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 1
}

Answer 2

You have an array and you have either 0 or 1 elements in it. Now you are trying to extract 2nd element from it, [0] is first, and [1] is second.
EDIT:
As you are not sure when the array will contain 1 or more objects. Therefore you can use as:
NSString *nn=nil;
if([arrayDataFromServer2 count]>1){
nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:#"name"];
}