教你如何给指示器indicator设置点击事件onclick，同步banner一起滚动，kotlin代码

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bindView.indicator.setOnTouchListener(View.OnTouchListener { v, event ->
           (v as? BaseIndicator)?.let { view: BaseIndicator ->
               val config = view.indicatorConfig
               if (config.indicatorSize > 1) {
                   if (event.action == MotionEvent.ACTION_DOWN || event.action == MotionEvent.ACTION_UP) {
                       val eventX = event.rawX.toInt()
                       val eventY = event.rawY.toInt()
                       val rect = Rect()
                       view.getGlobalVisibleRect(rect)

                       if (event.action == MotionEvent.ACTION_UP) {
                           val leftOld = rect.left
                           var left = leftOld
                           var right = leftOld
                           val spaceHalf: Int = config.indicatorSpace shr 1
                           for (i in 0 until config.indicatorSize) {
                               val indicatorWidth: Int = if (config.currentPosition == i) config.selectedWidth else config.normalWidth

                               when (i) {
                                   0 -> {
                                       left = leftOld
                                       right = left + indicatorWidth + spaceHalf
                                   }
                                   else -> {
                                       left = right
                                       right += config.indicatorSpace + indicatorWidth
                                   }
                               }
                               rect.set(left, rect.top, right, rect.bottom)
                               if (rect.contains(eventX, eventY)) {
                                   //必须加1也不知道为啥
                                   bindView.bannerHome.currentItem = i + 1
                                   return@OnTouchListener true
                               }
                           }
                       }
                       return@OnTouchListener true
                   }
               }
           }
           return@OnTouchListener false
       })