UITouch coordinates and SKSpriteNode coordinates are different - ios

Question

I have an SKSpriteNode that is initialized with an image. I am using the -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event method to figure out if the user touch is within the bounds of the sprite. For some reason, even when I tap inside the sprite, the coordinates are not even similar. They seem to be on a different coordinate system.
#import "GameScene.h"
SKSpriteNode *card;
#implementation GameScene
-(void)didMoveToView:(SKView *)view {
/* Setup your scene here */
self.backgroundColor = [SKColor whiteColor];
card = [SKSpriteNode spriteNodeWithImageNamed:#"card"];
card.position = CGPointMake(500, 500);
[self addChild:card];
}
-(void)update:(CFTimeInterval)currentTime {
/* Called before each frame is rendered */
}
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [[event allTouches] anyObject];
CGPoint touchLocation = [touch locationInView:self.view];
int cardX = card.frame.origin.x;
int cardwidth = card.frame.size.width;
int cardY = card.frame.origin.y;
int cardHeight = card.frame.size.height;
if(touchLocation.x >= card.frame.origin.x &&
touchLocation.x <= (card.frame.origin.x + card.frame.size.width) &&
touchLocation.y <= card.frame.origin.y &&
touchLocation.y >= (card.frame.origin.y + card.frame.size.height))
{
self.backgroundColor = [SKColor blackColor];
}
else{
self.backgroundColor = [SKColor whiteColor];
}
}
#end

Answer 1

Node and View have different coordinate system.
If you need to know the location of the tapped point in the node coordinate you may want to replace the line :
CGPoint touchLocation = [touch locationInView:self.view];
by :
CGPoint touchLocation = [touch locationInNode:self];

Answer 2

For Swift 4 and above:
if playButton.frame.contains(touch.location(in: scene!)) {
print("Play button touched")
}