检测CAShapeLayer触摸

Question

我创建了一个蜘蛛图由overiding画矩形，我使用的核心grahics CAShapeLayer画出我的领域，有其在屏幕上创建多个CAShapeLayer地区，我想检测时，这层被触摸用户接触...但我无法弄清楚如何？

Answer 1

首先，你不应该画在各层drawRect这个，但是这不是你的问题。要识别“感动”，你可以做这样的事情了一层......

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    for (UITouch *touch in touches) { 
     CGPoint touchLocation = [touch locationInView:self.view]; 
     for (id sublayer in self.view.layer.sublayers) { 
      BOOL touchInLayer = NO; 
      if ([sublayer isKindOfClass:[CAShapeLayer class]]) { 
       CAShapeLayer *shapeLayer = sublayer; 
       if (CGPathContainsPoint(shapeLayer.path, 0, touchLocation, YES)) { 
        // This touch is in this shape layer 
        touchInLayer = YES; 
       } 
      } else { 
       CALayer *layer = sublayer; 
       if (CGRectContainsPoint(layer.frame, touchLocation)) { 
        // Touch is in this rectangular layer 
        touchInLayer = YES; 
       } 
      } 
     } 
    } 
}