some code to help catch tricky background thread UI bugs

UIView+Threading.m

//
//  UIView+Threading.m
//
//  Created by Seth Raphael on 4/12/11.
//  Copyright 2011 BumpTechnologies. All rights reserved.
//


#ifdef DEBUG

@implementation UIView (UIView_Threading)

- (id) autorelease;
{
    if (![[NSThread currentThread] isMainThread]) {
        [NSException raise:@"UIView Background Exception" format:@"Autoreleasing a UIView %@ on a background thread", self];
    }
    return [super autorelease];
}

- (void) release;
{
    if (![[NSThread currentThread] isMainThread]) {
        [NSException raise:@"UIView Background Exception" format:@"Releasing a UIView %@ on a background thread", self];
    }
   [super release];
}



@end

@implementation UIViewController (UIViewController_Threading)

- (id) autorelease;
{
    if (![[NSThread currentThread] isMainThread]) {
        [NSException raise:@"UIView Background Exception" format:@"Autoreleasing a UIView %@ on a background thread", self];
    }
    return [super autorelease];
}

- (void) release;
{
    if (![[NSThread currentThread] isMainThread]) {
        [NSException raise:@"UIView Background Exception" format:@"Releasing a UIView %@ on a background thread", self];
    }
    [super release];
}

@end
#endif

[[NSThread currentThread] isMainThread]

can be written as

[NSThread isMainThread]