NSThread with _NSAutoreleaseNoPool error

Question

I have an method which save files to the internet, it works but just slow. Then I\'d like to make the user interface more smooth, so I create an NSThread to handle the slow task

Answer 1

You need to mainly create an autorelease pool for the thread. Try changing your save method to be like this:

- (void) save:(id)arg {
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    //Existing code

    [pool drain];
}

You will not you that the above does not call release on the NSAutoreleasePool. This is a special case. For NSAutoreleasePool drain is equivalent to release when running without GC, and converts to a hint to collector that it might be good point to run a collection.