Question

I run a for to choose which objects to remove. After i removed one the app crashes.
I´ve read that i couldn´t remove an object in the for because of the index, so i remove them outside but it still crashes. When it crashes at runtime it says the array it is an NSArray which is not, it is a NSMutablearray. Anyone knows why is this happening?

Here is the code:

NSMutableArray *discardedItems = [NSMutableArray array];
NSInteger catalogo = [[tmpDic objectForKey:@"catalogo"] intValue];
NSInteger documento = [[tmpDic objectForKey:@"documento"] intValue];

for (i=0; i<[self.deletedDocuments count] ; i++) 
{
    if ([[[self.deletedDocuments objectAtIndex:i] objectForKey:@"documento"] intValue] == documento &&
        [[[self.deletedDocuments objectAtIndex:i] objectForKey:@"catalogo"] intValue] == catalogo) 
        [discardedItems addObject:[self.deletedDocuments objectAtIndex:i]];
}

NSLog(@"Dictionary\n%@", self.deletedDocuments);
if (discardedItems != nil)
    [self.deletedDocuments removeObjectsInArray:discardedItems];

Answer 1

are you storing the array in user defaults? objects taken from user defaults will be immutable, even if a mutable subclass was stored