从本身的角度判断:
当前触摸点是否滑出本身View边界
val vibrator = getSystemService(Service.VIBRATOR_SERVICE) as Vibrator
//手势监听
mouse_mat?.setMouseTouchListener { event ->
if (event.y < 0) { //手指划出上边界触发震动
vibrator.vibrate(100)
}
//x<0 可判断滑出左边界
//y>当前view的高度,表示滑出底部
}
从父布局的角度判断:
传入viewGroup的event.x和event.y. 得知当前触摸点是否位于指定的子view区域:
private var mChangeImageBackgroundRect: Rect? = null
private fun isInChangeImageZone(view: View, x: Int, y: Int): Boolean {
if (null == mChangeImageBackgroundRect) {
mChangeImageBackgroundRect = Rect()
}
view.getDrawingRect(mChangeImageBackgroundRect)
val location = IntArray(2)
view.getLocationOnScreen(location)
mChangeImageBackgroundRect!!.left = location[0]
mChangeImageBackgroundRect!!.top = location[1]
mChangeImageBackgroundRect!!.right = mChangeImageBackgroundRect!!.right + location[0]
mChangeImageBackgroundRect!!.bottom = mChangeImageBackgroundRect!!.bottom + location[1]
return mChangeImageBackgroundRect!!.contains(x, y)
}