iOS 9, Xcode 7, Multitouch with SpriteKit

Question

Hello I've made an iOS game named 'Racing Horses' and published it to App Store. It was fine with playing on iOS 8.x.x, but after I installed iOS 9 Beta 3, in the same game (same codes), iPhone cannot recognize multiple touches. I have to leave my finger to make the next touch. But it was not like this, I could make a new tap even if I still hold my previous tap. What is the problem, what should I do?

Grearson

Can you post the relevant code? – Falsify

Answer 1

I had the same problem on a game launched this summer.
I had to explicitly enable multiple touch in the SKScene:

-(void)didMoveToView:(SKView *)view {
    self.view.multipleTouchEnabled = YES;
}

Here's more detail - The game uses sub-classes of SKSpriteNode. They test for number of touches depending on the the sprite. In the sub-class:

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
     NSLog(@"TapCount  = %lu", (unsigned long)touches.count);

     if (touches.count == 2) {
          // do something
     }
}

Entelechy

Answer 2

It looks like as of ios 9 multitouch has to be explicitly enabled. I don't think this used to be the case. I now have this issue on all my spritekit apps. Just adding self.view.multipleTouchEnabled = YES; in viewDidLoad, fixes it for me.

Iconostasis

Answer 3

Just a simple mistake, I've enabled multitouch at interface builder, problem solved. But I don't know how it turned off by itself :)

Grearson