Deleting objects within a for loop from a NSMutableArray

Question

I am working with a UITableView and for each of the objects in the array that is the datasource for the UITableView, I am deleting them if they meet a

Answer 1

You must run your loop backwards, i.e.

for (int i=c-1;i>=0;--i)

If you are running it the other way round, removing an object at index position i moves the objects in the array that are behind i one position forward. In the end you will even run over the bounds of your array.

Answer 2

If you wanted to keep your loop running forwards, you could either:

decrement i when your condition is met and you removeObjectAtIndex

    if (cell.imageView.image == isCkDone) {
        ...
        --i ;
        ...
    }

or increment i only when your condition is not met:

for ( int i=0 ; i<c ; ) {
    ...
    if (cell.imageView.image == isCkDone) {
        ...
    } else {
    ++i ;
    }