Search code examples
iphoneiosnsindexpath

passing IndexPath to subview

Hi I am trying to pass an indexvalue from my parent view to my subview like this //main.m

SubViewController *subViewController = [[SubViewController alloc] init];
subViewController.parentViewSelectedIndexPath = indexPath;

However when I try to check to see if the value have been passed over to the subview like so

//sub.m

- (void)viewDidLoad
{
//
NSLog(@"%@", parentViewSelectedIndexPath);
//

decliration in side sub.h

//
@interface VehicleResultViewController : UITableViewController {
//
NSIndexPath *parentViewSelectedIndexPath;
//
@property (nonatomic, retain) NSIndexPath *parentViewSelectedIndexPath;
//
@end

//Answer

subview loads before it gets the indexpath being passed to is.. so I had to use a method that is executed later i.s.(didselectrowatindexpath) this printed out the correct indexpath that was sent to it from the main view.

it prints (null) to the console.. am I doing something wrong?

Solution

  • Add some NSLogs to determine the order of calls, @Kevin makes the point that viewDidLoad may be called prior to setting the property.

    Also if the indexPath is always set whenever subViewController is instantiated it is good practice to create your own designated initializer with indexPath as a parameter. In the case that @Kevin makes this is the answer.