Question

Basically, I cannot figure out how to change the background image. I have searched and searched and just cannot seem to find it. Anyone have any ideas? Thanks!

Update

Here is the code I use to show the View:
SettingsViewController *settingsView = [[SettingsViewController alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController:settingsView animated:YES];

If anyone needs anything else to help out I’ll do my best! Thanks!

Answer 1

Passing a messages between different views can be done by direct call of the methods (not a good architectural solution but maybe not critical for a small projects) or with an event driven model as described in an answer above.
As for binding of a collection of objects and processing the afterward I recommend to review IBOutletCollection keyword that allows to bind multiple objects fro an InterfaceBuilder to a property with a type like NSArray.

Property declaration will look like following:

@property (nonatomic, retain) IBOutletCollection(UIButton) NSArray *buttons;

The code to change the background for all the buttons will look like following:

UIImage *backgroundImage = [UIImage imageNamed:@"background.png"];
for(UIButton *button in buttons) {
    [button setBackgroundImage:backgroundImage forState:UIControlStateNormal];
}