У меня есть следующий XML файл -
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_product_page_root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/activity_product_page_top_product_layout"
android:layout_width="match_parent"
android:layout_height="80dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/activity_product_page_back_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:contentDescription="@string/marketplace_productvendor_page_back_button"
android:onClick="backButtonPressed"
android:src="@drawable/arrow_left"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="@+id/activity_product_page_vendor_icon_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:contentDescription="@string/marketplace_productvendor_page_vendor_image"
android:scaleType="centerCrop"
android:src="@mipmap/ic_launcher"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:layout_width="200dp" />
<FrameLayout
android:id="@+id/activity_product_page_shopping_cart_framelayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:background="@color/white"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/activity_checkout_cart_imageView"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_margin="20dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:src="@drawable/icons_32_x_32_black_shopping_cart" />
<TextView
android:id="@+id/activity_product_page_shopping_cart_counter"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_gravity="end"
android:background="@drawable/textview_round_background"
android:elevation="1dp"
android:gravity="center"
android:maxLines="1"
android:textAlignment="center"
android:textColor="@color/white"
android:textSize="10sp"
android:textStyle="bold"
android:visibility="gone"
app:autoSizeMaxTextSize="16sp"
app:autoSizeMinTextSize="10sp"
app:autoSizeStepGranularity="2sp"
app:layout_constraintStart_toEndOf="@+id/activity_checkout_cart_imageView"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="SmallSp"
tools:text="1"
tools:visibility="visible" />
</FrameLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/activity_product_page_top_product_layout">
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/activity_product_page_share_product_action_button"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_gravity="end"
android:layout_marginTop="30dp"
android:layout_marginEnd="20dp"
android:alpha="0.5"
android:background="@color/grey_text_cart"
android:backgroundTint="@color/grey_text_cart"
android:elevation="1dp"
android:scaleType="center"
android:src="@drawable/share_product"
app:backgroundTint="@color/white"
app:fabCustomSize="50dp"
app:fabSize="auto"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.core.widget.NestedScrollView
android:id="@+id/activity_product_page_nested_scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<LinearLayout
android:id="@+id/activity_product_page_nested_linear_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/marketplace_15dp">
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="@color/very_light_grey" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/activity_product_page_brands_breadcrumbs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:fontFamily="@font/noto_sans"
android:text="@string/breadcrumbs_brands"
android:textStyle="bold" />
<TextView
android:id="@+id/activity_product_page_vendor_breadcrumbs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_toEndOf="@id/activity_product_page_brands_breadcrumbs"
android:fontFamily="@font/noto_sans"
android:text="@string/products_breadcrumbs_unknown_vendor"
android:textStyle="bold" />
<TextView
android:id="@+id/activity_product_page_product_breadcrumbs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_toEndOf="@id/activity_product_page_vendor_breadcrumbs"
android:ellipsize="end"
android:fontFamily="@font/noto_sans"
android:maxLines="1"
android:text="@string/activity_product_page_unknown_product"
android:textColor="#979797" />
</RelativeLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:background="@color/very_light_grey" />
<androidx.viewpager.widget.ViewPager
android:id="@+id/activity_product_page_view_pager"
android:layout_width="match_parent"
android:layout_height="300dp"
android:paddingStart="40dp"
android:paddingEnd="40dp"
tools:layout_height="300dp" />
<me.relex.circleindicator.CircleIndicator
android:id="@+id/activity_product_page_image_indicator"
android:layout_width="match_parent"
android:layout_height="10dp"
app:ci_drawable="@drawable/currently_selected_product"
app:ci_drawable_unselected="@drawable/currently_unselected_product"
app:ci_height="5dp"
app:ci_width="5dp" />
<LinearLayout
android:id="@+id/activity_product_page_products_details_viewgroup"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="@dimen/marketplace_15dp"
android:background="@color/very_light_grey"
android:orientation="vertical">
<TextView
android:id="@+id/activity_product_page_product_title_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:textSize="20sp"
android:textStyle="bold"
tools:text="Products long title" />
<TextView
android:id="@+id/activity_product_page_product_short_description_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
tools:text="Product short description" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="@dimen/marketplace_14dp">
<TextView
android:id="@+id/activity_product_page_sold_by"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_sold_by" />
<TextView
android:id="@+id/activity_product_page_vendors_name_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/activity_product_page_sold_by"
android:layout_marginStart="5dp"
android:layout_toEndOf="@+id/activity_product_page_sold_by"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_unknown"
android:textStyle="bold"
tools:text="Vendors name, " />
<TextView
android:id="@+id/activity_product_page_fulfilled_by_hard_coded_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/activity_product_page_vendors_name_textview"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_fulfilled_by" />
<TextView
android:id="@+id/activity_product_page_fulfilled_by_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/activity_product_page_fulfilled_by_hard_coded_text"
android:layout_marginStart="5dp"
android:layout_toEndOf="@+id/activity_product_page_fulfilled_by_hard_coded_text"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_unknown"
android:textStyle="bold"
tools:text="Project Verte." />
<TextView
android:id="@+id/activity_product_page_sku_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_sku_unknown"
tools:text="SKU: K004" />
</RelativeLayout>
<TextView
android:id="@+id/activity_product_page_product_price_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_fetching_price"
android:textSize="20sp"
android:textStyle="bold"
tools:text="$35.00" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_additional_tax_may_apply_on_checkout" />
<RelativeLayout
android:id="@+id/activity_product_page_availability_view_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/marketplace_15dp">
<TextView
android:id="@+id/activity_product_page_availability_hardcoded"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_availability" />
<TextView
android:id="@+id/activity_product_page_availability_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/activity_product_page_availability_hardcoded"
android:layout_toEndOf="@+id/activity_product_page_availability_hardcoded"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_unknown"
android:textColor="@color/red_delete"
tools:text="In Stock"
tools:textColor="@color/product_available" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/activity_product_page_quantity_picker_viewgroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/marketplace_15dp"
android:visibility="gone"
tools:visibility="visible">
<TextView
android:id="@+id/activity_product_page_quantity_hardcoded"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_quantity" />
<NumberPicker
android:id="@+id/activity_product_page_quantity_number_picker"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignStart="@+id/activity_product_page_quantity_hardcoded"
android:layout_marginStart="90dp"
android:layout_marginEnd="90dp" />
</RelativeLayout>
<!-- At this point starts the dynamic product attributes (if any exists)
Check ProductPageActivity.java 'setProductPurchaseAttributes()'
for the code -->
<ProgressBar
android:id="@+id/activity_product_page_add_to_cart_progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="@dimen/marketplace_15dp"
android:visibility="gone"
tools:visibility="visible" />
<Button
android:id="@+id/activity_product_page_add_to_cart_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:background="@color/color_black"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_add_to_cart"
android:textColor="@color/white" />
<ProgressBar
android:id="@+id/activity_product_page_buy_now_progress_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="@dimen/marketplace_15dp"
android:visibility="gone"
tools:visibility="visible" />
<Button
android:id="@+id/activity_product_page_buy_now_button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:background="@color/color_black"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_buy_now"
android:textColor="@color/white" />
<TextView
android:id="@+id/activity_product_page_share_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_share" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/marketplace_14dp"
android:layout_marginTop="30dp"
android:layout_marginEnd="@dimen/marketplace_14dp"
android:fontFamily="@font/noto_sans"
android:text="@string/activity_product_page_related_products"
android:textSize="22sp"
android:textStyle="bold" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/activity_product_page_related_recycleview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_marginTop="@dimen/marketplace_15dp"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:listitem="@layout/fragment_marketplace_products_row_item" />
<View
android:id="@+id/activity_product_page_bottom_view"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginTop="@dimen/marketplace_15dp"
android:layout_marginBottom="60dp"
android:background="@color/light_black"
android:visibility="gone"
tools:visibility="visible" />
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
, который выглядит так -
Я пытаюсь реализовать логику c, которая заставит плавающую полосу исчезнуть, когда она достигнет TextView с именем - activity_product_page_share_textview. Я пытался реализовать new NestedScrollView.OnScrollChangeListener() в моем NestedScrollView, но значения, которые я получаю от scrollX и scrollY, были совершенно неактуальными - похоже, он вычисляет значение в соответствии с текущей доступной недвижимостью экрана и (возможно) также в соответствии с моей скоростью прокрутки - определенно не в соответствии с NestedScrollView ViewGroup.
Кроме того, я хочу, чтобы плавающая панель возвращалась, когда она находится ниже позиции Y этого TextView. И появляются, и исчезают с некоторой простой анимацией постепенного появления / исчезновения.
Как я могу это реализовать?