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iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Readonly Attribute

Posted by Demetrios Tsakiris
Demetrios Tsakiris
Courses Plus Student 1,935 Points

Custom Class not working as shown in video on my end

after creating the custom class THCrystalBall. when doing the following line: self.crystalBall = [[THCrystalBall alloc] init]; the array is not being initialized. I have re-watched the vids and i have done everything as he has written the code. So basically the "getter" function is not executing. I added a line below the alloc init NSLog(@"predictions %@",self.crystalBall.predictions); this fires the getting which puts all the values into the array. I know because via debugger it finally went into that code where i had a breakpoint set. either i missed one step or something is wrong with the vid. please advise.

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

can you post your getter for the property?

1 Answer

Demetrios Tsakiris
Demetrios Tsakiris
Courses Plus Student 1,935 Points

never mind. i found the problem

before:

// method returning random string from instance array for the class
- (NSString*) randomPrediciton{
    int random = arc4random_uniform(_predictions.count); <-- problem here instead of self. i had _predictions
    // return value from array with random index
    return [_predictions objectAtIndex:random];
}

after:

// method returning random string from instance array for the class
- (NSString*) randomPrediciton{
    int random = arc4random_uniform(self.predictions.count);
    // return value from array with random index
    return [_predictions objectAtIndex:random];
}