我想实现AppBarLayout + Recyclerview scrollingviewbehavior效果不常见的功能。
我想让Recyclerview与AppBarLayout一起移动，并在用户滚动时在AppBarLayout后面。我需要它确实位于AppBarlayout的后面，因为AppbarLayout的背景将是半透明的，以便可见recyclerview。
我不知道该怎么做。
我确实尝试了ScrollViewBehavior的多个变体。 我也尝试过将SwipeRefreshlayout topMaring设置为负值，并在滚动过程中更改此值。从给定的“垂直滚动偏移量”的AppBarLayout.addOnOffsetChangedListener提供的值。结果是swipeRefreshLayout在滚动期间和在AppBarLayout后面时闪烁。
请帮助我。我没有其他选择了。
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="@+id/clRootMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="false"
android:background="@color/backgroundGray">
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="@+id/srlSwipeRefresh"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/transparent"
android:isScrollContainer="true"
app:layout_behavior=".Util.View.ScrollingViewOverlapBehavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rvList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipChildren="false"
android:divider="@android:color/transparent"
android:dividerHeight="@dimen/dp5"
android:drawSelectorOnTop="true"
android:fadeScrollbars="true"
android:fadingEdge="none"
android:fadingEdgeLength="@dimen/dp0"
android:gravity="center"
android:isScrollContainer="true"
android:nestedScrollingEnabled="true"
android:overScrollMode="never"
android:paddingLeft="@dimen/list_margin"
android:paddingRight="@dimen/list_margin"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbarSize="@dimen/dp4"
android:scrollbarStyle="outsideOverlay"
android:scrollbars="vertical"
android:smoothScrollbar="false"
app:fastScrollEnabled="true"
app:fastScrollHorizontalThumbDrawable="@drawable/scrollbar_draggable"
app:fastScrollHorizontalTrackDrawable="@drawable/scrollbar_track_line"
app:fastScrollVerticalThumbDrawable="@drawable/scrollbar_draggable"
app:fastScrollVerticalTrackDrawable="@drawable/scrollbar_track_line" />
<TextView
android:id="@+id/tvEmptyListText"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="@dimen/dp20"
android:layout_marginTop="@dimen/dp10"
android:layout_marginRight="@dimen/dp20"
android:alpha="0.5"
android:gravity="center"
android:text="@string/category_product_list_empty"
android:textColor="@color/textGreyDark"
android:visibility="gone" />
</LinearLayout>
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/ablMain"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#80ffffff"
android:fitsSystemWindows="true"
android:orientation="vertical"
app:liftOnScroll="false">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:orientation="vertical"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed|exitUntilCollapsed">
<LinearLayout
android:id="@+id/llOpenOrderListContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:id="@+id/tvOpenOrdersTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="@dimen/dp10"
android:layout_marginTop="@dimen/dp15"
android:alpha="0.6"
android:clickable="false"
android:gravity="center|left"
android:singleLine="true"
android:text="@string/current_orders_title"
android:textAllCaps="true"
android:textAppearance="@style/TextAppearance.AppCompat.Body2"
android:textColor="@color/textColor"
android:textSize="@dimen/sp10"
android:textStyle="normal" />
<androidx.viewpager.widget.ViewPager
android:id="@+id/vpOpenOrderList"
android:layout_width="match_parent"
android:layout_height="@dimen/dp75"
android:background="@android:color/transparent"
android:visibility="visible" />
</LinearLayout>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:id="@+id/rlTopContainer"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="@android:color/white"
app:layout_constraintDimensionRatio="H,16:9"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.viewpager.widget.ViewPager
android:id="@+id/vpBannerPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/transparent" />
<RelativeLayout
android:id="@+id/rlControlContainer"
android:layout_width="@dimen/dp100"
android:layout_height="@dimen/dp30"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="@dimen/dp15"
android:background="@android:color/transparent">
<com.google.android.material.tabs.TabLayout
android:id="@+id/tlBannerDots"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
app:tabBackground="@drawable/tab_selector_images"
app:tabGravity="center"
app:tabIndicatorHeight="0dp"
app:tabMinWidth="@dimen/dp3"
app:tabMode="fixed" />
</RelativeLayout>
<ImageView
android:id="@+id/ivHalfCircleBackgroundWithStroke"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_marginTop="@dimen/dp50"
android:scaleType="fitXY"
app:srcCompat="@drawable/ic_bottom_arc"
/>
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</LinearLayout>
<RelativeLayout
android:id="@+id/rlCategoryContainer"
android:layout_width="match_parent"
android:layout_height="@dimen/dp75"
android:background="@android:color/transparent">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rvCategoryList"
android:layout_width="wrap_content"
android:layout_height="@dimen/dp70"
android:layout_above="@+id/llSeparatorLine"
android:layout_centerHorizontal="true"
android:clipChildren="false"
android:divider="@android:color/white"
android:dividerHeight="@dimen/dp10"
android:drawSelectorOnTop="true"
android:fadeScrollbars="true"
android:fastScrollEnabled="false"
android:gravity="center"
android:isScrollContainer="true"
android:nestedScrollingEnabled="true"
android:overScrollMode="never"
android:scrollIndicators="none"
android:scrollbars="none" />
<LinearLayout
android:id="@+id/llSeparatorLine"
android:layout_width="match_parent"
android:layout_height="@dimen/dp1"
android:layout_alignParentBottom="true"
android:background="@drawable/grey_line_with_fading_edges_light"
android:orientation="horizontal" />
</RelativeLayout>
<RelativeLayout
android:id="@+id/rlBottomDownArcContainer"
android:layout_width="match_parent"
android:layout_height="@dimen/dp40"
android:background="@android:color/transparent">
<TextView
android:id="@+id/tvSectionName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="@android:color/transparent"
android:clickable="false"
android:gravity="center_horizontal|top"
android:singleLine="true"
android:text="KWIATY"
android:textAllCaps="true"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textColor="@color/textGrey"
android:textSize="@dimen/sp12"
android:textStyle="bold" />
</RelativeLayout>
</com.google.android.material.appbar.AppBarLayout>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/fabFilter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginLeft="@dimen/dp5"
android:layout_marginTop="@dimen/dp5"
android:layout_marginRight="@dimen/dp10"
android:layout_marginBottom="@dimen/dp10"
android:elevation="@dimen/dp4"
android:stateListAnimator="@animator/lift_on_touch"
android:visibility="visible"
app:backgroundTint="@android:color/white"
app:borderWidth="0dp"
app:elevation="4dp"
app:fabSize="normal"
app:rippleColor="@color/colorAccent"
app:srcCompat="@drawable/ic_icon_filtr_black" />
<!--</RelativeLayout>-->
</androidx.coordinatorlayout.widget.CoordinatorLayout>
public class ScrollingViewOverlapBehavior extends AppBarLayout.ScrollingViewBehavior {
public ScrollingViewOverlapBehavior() {
super();
}
public ScrollingViewOverlapBehavior(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, View child,
View dependency) {
super.onDependentViewChanged(parent, child, dependency);
child.setTranslationY(dependency.getY());
return false;
}
}
这是我到目前为止所取得的成就，但它在底部留有空间。我在自定义ScrollingViewBehavior（ScrollingViewOverlapBehavior）上使用setTranslationY。
https://drive.google.com/open?id=12Ri87BGKmAmwNq_rC-wpmCcYZyansmGl