Question

I have a MutableArray in NSObject Class i want to pass the NSMutableArray to detailViewController then i want to display the NSMutableArray in tableView(detailViewController).In this project i have a two view controller one is firstViewcontroller and detailviewcontroller.the problem is the data cannot pass from NSObject.Give me an idea if you want more Information Please ask.

peripheralmanager.m

- (void)centralManager:(CBCentralManager *)central 
didDiscoverPeripheral:(CBPeripheral *)peripheral 
 advertisementData:(NSDictionary *)advertisementData 
              RSSI:(NSNumber *)RSSI
{

  NSLog(@"didDiscoverPeriphera.peripheral: %@ rssi: %@, UUID:%@ advertisementData:%@", peripheral,RSSI,peripheral.UUID, [advertisementData description]);

  targetPeripheral = peripheral;
  peripheral.delegate = self;
  //  [[centralManager retrievePeripherals:NSArray arrayWithObject:(id)peripheral.UUID] ];
  //  rssilabel.text=[RSSI stringValue];
  if (!peripheral.isConnected)
  {
  [centralManager connectPeripheral:peripheral options:nil];
  }
  // MeBleAppDelegate *appdelegate=(MeBleAppDelegate *)[[UIApplication sharedApplication]delegate];
  MeBleDetailViewController *obj=[[MeBleDetailViewController alloc]init];
  // MeBleDetailViewController *obj=[[appdelegate sharedappdelegate].navigationController objectATindex:MeBleDetailViewController];
  obj.dataArray=self.mutableArray;
  [self.mutableArray addObject:peripheral];
  printf("New UUId,addin\r\n");

}

detailviewcontroller.m

- (void)viewDidLoad
{
  //NSMutableArray *dataArray=[[NSMutableArray alloc]init];
  [super viewDidLoad];
  NSLog(@"%@",self.dataArray);
  NSLog(@"%@",objCurrentDevice.mutableArray);
  //  PeripheralManager *peripheralmanager=[[PeripheralManager alloc]init];
  self.label.text=[NSString stringWithFormat:@" %@ ",dataArray];
  // Do any additional setup after loading the view.
  // [self.dataArray addObject:objCurrentDevice.mutableArray];

  appDelegate.arrDevices=dataArray;
  appDelegate = [[UIApplication sharedApplication] delegate]; 
  // write below line in any function in this file
  // NSLog(@"%d",[appDelegate.arrDevices count]);  
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  static NSString *simpleTableIdentifier=@"Cell1";

  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
  if(cell==nil)
  {
    cell =[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}

    cell.textLabel.text=[dataArray objectAtIndex:indexPath.row];
     //  PeripheralManager *objtemp=[[dataArray objectAtIndex:indexPath.row]deviceName];
     NSLog(@"%@",objCurrentDevice.deviceName);
    return cell;
}

Error Message

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '***    -[__NSArrayM insertObject:atIndex:]: object cannot be nil'

*** First throw call stack:

(0x356c888f 0x37a6f259 0x3561d1d7 0x164db 0x33135c8b 0x331421e9 0x33142059 0x33141f3f 0x331417c1 0x33141503 0x33135aff 0x331357d5 0x331ae903 0x33228627 0x351e2933 0x3569ca33 0x3569c699 0x3569b26f 0x3561e4a5 0x3561e36d 0x372ba439 0x3312acd5 0x1500f 0x14fb4)

terminate called throwing an exception(lldb) 

I want output like this image..Please Give an idea..Please Ask Me for More Information.

Answer 1

You can use Designated intializer to solve this issue

In your FirstViewController

-(id)initwithData (NSArray*)array
{
  //store the data in array
}

In the DetailedViewController you can call this method..

MeBleDetailViewController *obj=[[MeBleDetailViewController alloc]initwithData:yournsarrayname];

You can see your array will be loaded with the data