Tap gesture causes strange behavior - ios

Question

I’m building a reaction test that requires the user to tap on the target dot, while other non-target dots come down. It works most of the time but sometimes after tapping on a target dot it will display several other dots with weird behavior. I’ve been looking at the code for days and I can’t find the problem. Does anyone have any suggestions?
Thanks much. Here’s the code.
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
// single tap gesture recognizer
self.myTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(theTap:)];
self.myTap.numberOfTapsRequired = 1;
[self.firstView addGestureRecognizer:self.myTap];
self.myTap.enabled = NO;
self.colorToHit = self.colorFromPreviousController;
[self KickOff];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.holdTheReactionTimes = [[NSMutableArray alloc] initWithCapacity:50];
self.firstTime = YES;
numberOfTries = 0;
}
#pragma mark - Utility Methods
- (void)setRandomLocationForView:(UIView *)view
{
CGRect sinkBounds = CGRectInset(self.firstView.bounds, view.frame.size.width/2, view.frame.size.height/2);
CGFloat x = arc4random() % (int)sinkBounds.size.width + view.frame.size.width/2;
CGFloat y = arc4random() % (int)sinkBounds.size.height + view.frame.size.height/2;
view.center = CGPointMake(x, y);
}
- (void)addLabel
{
[self stopDraining];
static NSArray *buttons = nil;
buttons = [[NSArray alloc] initWithObjects:
#"XX.png",
#"YY.png",
#"ZZ.png",
nil];
int theIndex = arc4random()%[buttons count];
NSLog(#"the index: %d", theIndex);
NSString *theImageName = [buttons objectAtIndex:theIndex];
CGRect anotherFrame = CGRectMake(10, 10, 64, 64);
UIView *anotherView = [[UIView alloc] initWithFrame:anotherFrame]
UIImageView *imageView1 = [[UIImageView alloc] initWithFrame:CGRectMake(-2, -2, 64, 64)];
imageView1.image = [UIImage imageNamed:theImageName];
[anotherView addSubview:imageView1];
[self setRandomLocationForView:anotherView];
[self.firstView addSubview:anotherView];
NSDate *date = [NSDate date];
timeOne = [date timeIntervalSince1970];
if (theIndex == self.colorToHit) {
NSLog(#"the right color");
self.isThisTheRightColor = YES;
self.myTap.enabled = YES;
numberOfTries += 1;
} else {
NSLog(#"the wrong color");
self.isThisTheRightColor = NO;
self.myTap.enabled = NO;
[self startDraining];
}
}
#pragma mark - View Animation
#define ANIMATE_DURATION 6.0
#define SLEEP_INTERVAL 0.5
- (void)theTap:(UITapGestureRecognizer *)gesture
{
NSLog(#"Tapped");
float tapInterval = 0;
CGPoint tapLocation = [gesture locationInView:self.firstView];
for (UIView *view in self.firstView.subviews) {
if (CGRectContainsPoint(view.frame, tapLocation)) {
NSLog(#"we hit one");
AudioServicesPlayAlertSound(kSystemSoundID_Vibrate); // added this 4-27
if (self.firstTime) {
NSDate *date = [NSDate date];
timeTwo = [date timeIntervalSince1970];
NSLog(#"TAP First time: %f", timeTwo);
self.firstTime = NO;
} else {
NSDate *date = [NSDate date];
timeTwo = [date timeIntervalSince1970];
NSLog(#"Second time: %f", timeTwo);
}
tapInterval = (timeTwo - timeOne);
NSLog(#"Time Interval: %f", tapInterval);
[view removeFromSuperview];
[self writeTimeStampToArray:tapInterval];
}
}
}
- (void)KickOff
{
for (UIView *view in self.firstView.subviews) {
[view removeFromSuperview];
}
if (self.firstView.window) {
[self addLabel];
}
}
- (void)writeTimeStampToArray:(float)timeStamp
{
NSNumber *timeObject = [NSNumber numberWithFloat: timeStamp];
[self.holdTheReactionTimes addObject:timeObject];
if (numberOfTries < NUMBER_OF_TRIES) {
[self addLabel];
} else {
[self nextScreen];
}
}
- (void)nextScreen
{
[self performSegueWithIdentifier: #"viewsummary" sender: self];
}
}
}
#pragma mark - Flipside View
- (void)ReactionViewControllerDidFinish:(int)trynumber
{
self.tryNumberInt = trynumber;
[self dismissViewControllerAnimated:YES completion:nil];
}
#define COUNTER 4
//////////////
// drain logic
- (void)drain:(NSTimer *)timer
{
[self drain];
}
#define DRAIN_DURATION 2.0
- (void)startDraining
{
self.drainTimer = [NSTimer scheduledTimerWithTimeInterval:DRAIN_DURATION/3
target:self
selector:#selector(drain:)
userInfo:nil
repeats:YES];
}
- (void)stopDraining
{
[self.drainTimer invalidate];
}
- (void)drain
{
for (UIView *view in self.firstView.subviews) {
CGAffineTransform transform = view.transform;
if (CGAffineTransformIsIdentity(transform)) {
UIViewAnimationOptions options = UIViewAnimationOptionCurveLinear;
[UIView animateWithDuration:DRAIN_DURATION/3 delay:0 options:options animations:^{
view.transform = CGAffineTransformRotate(CGAffineTransformScale(transform, 0.7, 0.7), 2*M_PI/3);
} completion:^(BOOL finished) {
if (finished) {
[UIView animateWithDuration:DRAIN_DURATION/3 delay:0 options:options animations:^{
view.transform = CGAffineTransformRotate(CGAffineTransformScale(transform, 0.4, 0.4), -2*M_PI/3);
} completion:^(BOOL finished) {
if (finished) {
[UIView animateWithDuration:DRAIN_DURATION/3 delay:0 options:options animations:^{
view.transform = CGAffineTransformScale(transform, 0.1, 0.1);
} completion:^(BOOL finished) {
if (finished) [view removeFromSuperview];
}];
}
}];
}
}];
}
}
[self addLabel];
}