Got a gesture related problem. I implemented UISwipeGestureRecognizer to get swipe left and right events and that is working fine. However the problem I'm facing is that the UISlider's I have in the same view are not playing nice. The sliding motion of the sliders is being mistaken as a swipe left/right.
Any one experienced this problem before, got any ideas how to correct it?
Many thanks.
Here is the code contained within the view controller:
- (void)viewDidLoad {
[super viewDidLoad];
//Setup handling of LEFT and RIGHT swipes
UISwipeGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];
}
-(void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {
if (recognizer.direction == UISwipeGestureRecognizerDirectionRight) {
NSLog(@"Swipe Right");
//Do stuff
}
if (recognizer.direction == UISwipeGestureRecognizerDirectionLeft) {
NSLog(@"Swipe Left");
//Do stuff
}
}
The simplest way to handle this is probably to prevent the gesture recognizer from seeing touches on your slider. You can do that by setting yourself as the delegate, and then implementing
If this doesn't work, it's possible the slider actually has subviews that receive the touch, so you could walk up the
superview
chain, testing each view along the way.Swift 4.0 version. Don't forget the UIGestureRecognizerDelegate.
I ended up getting this working just before Lily responded above. Here is the code I used, but Lily's looks cleaner (haven't tested Lily's thou):