CODEWITHSUNDEEP
iosobjective-csprite-kituiswipegesturerecognizer
d33
d33

Reputation: 17

UISwipeGestureRecognizers won't be recognized simultaneously

In my spritekit game, I am attempting to make it so that 2 UISwipeGestureRecognizers can be recognized simultaneously, however, I am unable to do so. Any help would be much appreciated, thanks in advance. Below is my code...

In ViewDidLoad:

UISwipeGestureRecognizer *leftSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwiped1:)];

[leftSwipe1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[leftSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:leftSwipe1];

UISwipeGestureRecognizer *rightSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwiped1:)];

[rightSwipe1 setDirection:UISwipeGestureRecognizerDirectionRight];
[rightSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:rightSwipe1];

After ViewDidLoad: 

-(void)rightSwiped1:(UIGestureRecognizer *)gestureRecognizer {

CGPoint pt = [gestureRecognizer locationInView:self.view];
if(pt.x < (self.view.bounds.size.width/2))
{
    SKNode *person1 = [self childNodeWithName:@"person1"];
    SKAction *moveRight = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) - 90, CGRectGetMidY(self.frame) + 200) duration:0.1f];
    [person1 runAction:moveRight];
} else if (pt.x > (self.view.bounds.size.width/2)) {

    SKNode *person2 = [self childNodeWithName:@"person2"];
    SKAction *moveRight2 = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) + 400, CGRectGetMidY(self.frame) + 200) duration:0.1f];
    [person2 runAction:moveRight2];
}


}
-(void)leftSwiped1:(UIGestureRecognizer *)gestureRecognizer {
CGPoint pt = [gestureRecognizer locationInView:self.view];
if(pt.x < (self.view.bounds.size.width/2))
{
    SKNode *person1 = [self childNodeWithName:@"person1"];
    SKAction *moveLeft = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) - 400, CGRectGetMidY(self.frame) + 200) duration:0.1f];
    [person1 runAction:moveLeft];
} else if (pt.x > (self.view.bounds.size.width/2)) {

    SKNode *person2 = [self childNodeWithName:@"person2"];
    SKAction *moveLeft2 = [SKAction moveTo:CGPointMake(CGRectGetMidX(self.frame) + 90, CGRectGetMidY(self.frame) + 200) duration:0.1f];
    [person2 runAction:moveLeft2];
}
}
-(BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer{
return YES;
}

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer   shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
return YES;
}

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{
return YES;
}

Upvotes: 0

Views: 56

Answers (1)

Hamish
Hamish

Reputation: 80891

You never assign the delegate property of your UISwipeGestureRecognizers, therefore your delegate methods never get called.

You can fix this by simply doing:

UISwipeGestureRecognizer *leftSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(leftSwiped1:)];

leftSwipe1.delegate = self;
[leftSwipe1 setDirection:UISwipeGestureRecognizerDirectionLeft];
[leftSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:leftSwipe1];

UISwipeGestureRecognizer *rightSwipe1 = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(rightSwiped1:)];

rightSwipe1.delegate = self;
[rightSwipe1 setDirection:UISwipeGestureRecognizerDirectionRight];
[rightSwipe1 setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:rightSwipe1];

Make sure you're also conforming to the UIGestureRecognizerDelegate protocol:

@interface YourViewController <UIGestureRecognizerDelegate>

...

@end

Upvotes: 1

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