觀察筆記

iOS exception - Collection was mutated while being enumerated


some related discuss

issue sample1

Before you loop over the array, you can create a new array with the elements. So when the original looped array is mutated (either by you, or by its owner) the array you loop over stays intact.

issue sample2

• Create a new empty array (e.g.newTermsArray)
• In the first loop create and add these new items to newTermsArray
• Then you will need a second loop to add the items from newTermsArray back into the original termsArray

@synchronized (yourobject)
    {
    //do something with your object
    }