با سلام دوستان

هنگام scroll کردن کرش میکنه برنامه و ارور زیر داده میشه:

main

  Process: com.mahdi.rostamipoor.nikestore, PID: 9843

  kotlin.NotImplementedError: An operation is not implemented: Not yet implemented

    at com.mahdi.rostamipoor.nikestore.activity_frag.PageProduct$onCreate$2$1.onDownMotionEvent(PageProduct.kt:51)

    at com.mahdi.rostamipoor.nikestore.scroll.ObservableScrollView.dispatchOnDownMotionEvent(ObservableScrollView.java:250)

    at com.mahdi.rostamipoor.nikestore.scroll.ObservableScrollView.onInterceptTouchEvent(ObservableScrollView.java:122)

کد ها:

pic_product.post {
    val toolbarHeight=pic_product.height
    val toolbar=toolbar_view
    val pic=pic_product
    observableScrollView.addScrollViewCallbacks(object : ObservableScrollViewCallbacks{
        override fun onScrollChanged(
            scrollY: Int,
            firstScroll: Boolean,
            dragging: Boolean
        ) {
            toolbar.alpha=scrollY.toFloat() / toolbarHeight.toFloat()
            pic.translationY=scrollY.toFloat() / 2
        }
        override fun onDownMotionEvent() {
            TODO("Not yet implemented")
        }
        override fun onUpOrCancelMotionEvent(scrollState: ScrollState?) {
            TODO("Not yet implemented")
        }
    })
}