EXC_BAD_ACCESS与NSDictionary

Question

I'm trying to add objects that are in an array to an NSDictionary based on their position inside of the NSArray , but the app crashes as soon as the NSDictionary is allocated. Any ideas why?

NSString *venue_title = [venues objectAtIndex:[actionSheet tag]];
NSString *venue_address = [venues_full_address objectAtIndex:[actionSheet tag]];
NSString *venue_lat = [venues_lat objectAtIndex:[actionSheet tag]];
NSString *venue_lng = [venues_lng objectAtIndex:[actionSheet tag]];        
NSLog(@"%@, %@, %@, %@", venue_title, venue_address, venue_lat, venue_lng);        
NSDictionary *venue_details_dict = [[NSDictionary alloc] initWithObjects:[NSArray arrayWithObjects:venue_title, venue_address, venue_lat, venue_lng, nil] forKeys:[NSArray arrayWithObjects:@"name", @"address", @"lat", "lng", nil]];

I see all the right values when I NSLog the objects, but the NSDictionary makes the app crash with a EXC_BAD_ACCESS error. I have NSZombies enabled, but nothing is being shown when it crashes like it would regularly show. Any ideas on what's going on here? Thanks in advance!

Answer 1

NSDictionary *venue_details_dict = [[NSDictionary alloc] initWithObjects:
     [NSArray arrayWithObjects:venue_title, venue_address, venue_lat, venue_lng, nil]
   forKeys:
     [NSArray arrayWithObjects:@"name", @"address", @"lat", "lng", nil]];

You forgot the @ on "lng" . Boom.

Answer 2

For more clarity that makes errors like this easier to see try:

NSDictionary *venue_details_dict = [NSDictionary dictionaryWithObjectsAndKeys:
    venue_title,   @"name",
    venue_address, @"address",
    venue_lat,     @"lat",
    venue_lng,     @"lng",
    nil];