Detect Shake in iOS

shake.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self becomeFirstResponder]; // set this view as first responder
}

-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event {
    if(event.type == UIEventSubtypeMotionShake){
        NSLog(@"SHAKE");
    }
}

- (BOOL)canBecomeFirstResponder
{
    return YES;
}