如何找到被击中的实际图层?
目前我有很多CAShapeLayers
,我想让每个人在点击时做点什么。但当他们中的任何一个被窃听时,他们所有人都会采取行动。
到目前为止,这是我的代码:
if shape.hitTest(point) != nil {
shape.lineWidth = 60
}
if shape1.hitTest(point) != nil {
shape1.lineWidth = 60
}
if shape2.hitTest(point) != nil {
shape2.lineWidth = 60
}
这可能意味着它只是检查点击的点是否为CAShapeLayer
。如何检查点击的点是否为特定CAShapeLayer
?
答案 0 :(得分:3)
这应该有效:
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
// Declare the touched symbol and its location on the screen
for touch: AnyObject in touches {
//get the point location
let location:CGPoint = (touch as! UITouch).locationInView(self.view)
if CGPathContainsPoint(shape1.path, nil, location, false) //shape 1
{
//touch in shape 1
}
else if CGPathContainsPoint(shape2.path, nil, location, false) //shape 2
{
//touch in shape 2
}
else if CGPathContainsPoint(shape3.path, nil, location, false) //shape 3
{
//touch in shape 3
}
}
}