Changing view controller when Segmented Control changes

Question

This problem is driving me crazy. I\'m trying to change the viewController when the user changes the selected \"tab\" of the segmented control. I\'ve spent a co

Answer 1

UISegmentedControl is a little different in that it doesn't have a delegate protocol, you have to use the "add target" style. In your case what you want to do is add a target to be notified when the UISegmentedControl changes (which is likely the parent view controller), and then that target can deal with the tab switching.

For example:

[self.mainSegmentedControl addTarget:self action:@selector(changedSegmentedControl:) forControlEvents:UIControlEventValueChanged];

In this example, the code is being invoked from some view/controller that has access to the variable for the segmented control. We add ourself to get the changedSegmentedControl: method invoked.

Then you would have another method like so:

- (void)changedSegmentedControl:(id)sender
{
   UISegmentedControl *ctl = sender;
   NSLog(@"Changed value of segmented control to %d", ctl.selectedSegmentIndex);
   // Code to change View Controller goes here
}

Note: this is untested code written from memory -- please consult the docs accordingly.