How to change the state of a button when an action is completed on another screen in Xcode?

Question

How would I change the state of a button on a level select screen when a certain amount of points are achieved on the game itself? Basically, I want to have a button to appear when a level is completed, by getting a certain amount of points, on a different screen than the game screen that I got the score on. I want it to almost be like how it is in Angry Birds. I have already programed the levels to open from the level select screen and from the previous level when completed.

Answer 1

If the variable button screen is a different set of files or a different XIB, then you can call a custom -(id)init method to get the int or string of the score.

Something like:

//.h 

int passedScore;

//.m
-(id)initwithscore:(int)score { 
if (self = [super init]) {

passedScore = score;
        }
}  

Then when you transition to the new view, call

[newview alloc]initwithscore://score int]autorelease];

Then it's a simple matter of seeing if the score is bigger or smaller than a given constant.

if(//scoreint >= //const) {
// do stuff 
}