android OnTouch 点击会触发ACTION_MOVE

刚开始只按移动距离做了处理，之后出现了部分手机点击没有反应问题

    private var downRawX = 0f
    private var downRawY: kotlin.Float = 0f
    private var downViewX: kotlin.Float = 0f
    private var downViewY: kotlin.Float = 0f
    private var isMoving = false

    private var startClickTime: Long = 0
    private val MAX_CLICK_DURATION = 200

 dataBinding.tvSaoma.setOnTouchListener { v, event ->
            val X = event.rawX.toInt()
            val Y = event.rawY.toInt()
            when (event.action and MotionEvent.ACTION_MASK) {
                MotionEvent.ACTION_DOWN -> {
                    startClickTime = System.currentTimeMillis()
                    downRawX = event.rawX
                    downRawY = event.rawY
                    downViewX = v.left.toFloat()
                    downViewY = v.top.toFloat()
                    isMoving = false
                }
                MotionEvent.ACTION_MOVE -> {
                    val deltaX: Int = (X - downRawX).toInt()
                    val deltaY: Int = (Y - downRawY).toInt()
                    val distance = Math.sqrt(
                        Math.pow(
                            (deltaX - downRawX).toDouble(),
                            2.0
                        ) + Math.pow((deltaY - downRawY).toDouble(), 2.0)
                    ).toFloat()
                    if (distance > 10 && System.currentTimeMillis() - startClickTime > MAX_CLICK_DURATION) { // 超过10个像素在移动
                        isMoving = true
                    }
                    val viewWidth = v.width
                    val viewHeight = v.height
                    val layoutParams = RelativeLayout.LayoutParams(viewWidth, viewHeight)
                    layoutParams.leftMargin = (downViewX + deltaX).toInt()
                    layoutParams.topMargin = (downViewY + deltaY).toInt()
                    v.layoutParams = layoutParams
                }
                MotionEvent.ACTION_UP -> {
                    if (!isMoving) {
                        //手指点击
                        zxingScan()
                    }
                }
            }
            true // 重要：返回true表示事件已处理，不再传递给其他组件。
        }