Data gets deallocated before use with ASIHTTPRequest asynchronous mode - iphone

Question

I'm using ASIHTTPRequest in asynchronous mode in a function called from my viewDidLoad()
NSURL *url = [NSURL URLWithString:#"http://somewebsite.com/data.txt"];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setDelegate:self];
[request startAsynchronous];
This is my requestFinished() where I do some text replacement and populate an NSArray with the data I've received from the website. It's just text, one data item per line.
The NSArray (and alloc / init) in viedDidLoad().
- (void)requestFinished:(ASIHTTPRequest *)request
{
NSString *sTemp = [request responseString];
sTemp = [sTemp stringByReplacingOccurrencesOfString:#"\n" withString:#","];
arrayTidalData = [sTemp componentsSeparatedByString:#","];
NSLog(#"Loaded %d items into the array",[arrayTidalData count]);
[tableTideTimes reloadData];
}
NSLog reports 127 data items.
Now, I use the NSArray data to populate a UITableView.
But, in cellForRowAtIndexPath() when I attempt to access the NSArray (arrayTidalData), for instance by doing a count, I get the following:
TideTimes[14696:b303] * -[__NSArrayM count]: message sent to deallocated instance 0x4e6c6a0
(I turned on NSZOMBIEEnabled = YES to get this data)
It seems the NSArray has been deallocated before I can use it. I also tried populating an NSString with the data in requestFinish() but got the same result.
Am I missing something really simple or am I doing something terribly wrong?
(It's my first time with ASIHTTPRequest)

Answer 1

Replace
arrayTidalData = [sTemp componentsSeparatedByString:#","];
with
arrayTidalData = [[sTemp componentsSeparatedByString:#","] retain];
It is because componentsSeparatedByString: returns autoreleased object. So it is released after method requestFinished: ends working.
And don't forget to release at the end of work (for example, dealloc).