Question

Note: I’ve only tested this on the simulator.

I want to add the target-action in code instead of connecting it as an IBAction in Interface Builder.

theButton is on the navigation bar at the top left, created in IB.

Steps:

1. Declared theButton as an IBOutlet and connected it in IB.

2. Added this in viewDidLoad:

   self.theButton.target = self;
   self.theButton.action = @selector(theAction);
   

3. I’m testing theAction by this:

   - (void)theAction {
   NSLog(@"theAction called");
   //do some other stuff
   }
   

When I click on theButton in the simulator, nothing happens. I don’t see the NSLog statement at all.

What am I missing?

Answer 1

Figured it out. Had to do with my configuration. I’m using a tab bar controller that uses the same view controller for multiple tabs. Each view controller shows different filtered data for some tab items.

Therefore, in such a configuration, you must be sure to connect the IBOutlets for each view controller that’s contained by a tab bar item. I only connected one, which is why it wasn’t working for some of the tab items.