iOS Objective-C - for-loop issue

Question

The code below produces and error in the line [myArray objectAtIndex:i]; and I can't seem to figure out why?

Any ideas?

int total = 0;
    for (int i = 0; i < myArray.count; i++) {
        int tempNumber = [myArray objectAtIndex:i];
        total = total + tempNumber;
    }

scord · Accepted Answer · 2012-07-09 18:52:22Z

6

It could be because you are setting an object to an int. By definition, objectAtIndex returns an object.

Depending on the type of object in myArray, you can try something like this:

int tempNumber = [[myArray objectAtIndex:i] intValue];

answered Jul 9, 2012 at 18:52

scord

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Comments

Almo · Accepted Answer · 2012-07-09 18:52:10Z

2

If you didn't put ints into your array, then you need to do something extra to get ints out. If you're getting an error with your code above, then it's because you don't have ints in the array, and you need

int myInteger = [[myArray objectAtIndex:i] intValue];

Or something to get the ints out of the array, depending on the rest of your code.

answered Jul 9, 2012 at 18:52

Almo

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2 Comments

Richard J. Ross III Over a year ago

But they are not required to. Using some CoreFoundation magic, you can actually store primitives inside a NSArray.

pasawaya Over a year ago

@RichardJ.RossIII - That sounds cool; how would one go about doing that?

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