Question

Can anybody tell me how to make sure an NSArray exist in memory as long as the app is running?

Thanks……

Answer 1

If you’re trying to preserve the array until the application exits, allocate it in your App Delegate’s -init method and release it in the App Delegate’s -dealloc method. Unless you make a mistake in your memory management and release the array too many times, it will be available for the entire lifecycle of the application.

For example:

@interface MyApp <NSApplicationDelegate>
{
  NSArray *myArray;
}
@end

@implementation MyApp

- (id)init
{
  if (nil != (self = [super init]))
  {
    myArray = [[NSArray alloc] init];
  }
  return self;
}

- (void)dealloc
{
  [myArray release], myArray = nil;
  [super dealloc];
}

@end