如何在RecyclerView向下滚动时折叠后隐藏工具栏,当RecyclerView向上滚动时显示工具栏,并在列表末尾展开CollapsingToolbarLayout?现在CollapsingToolbarLayout只是折叠,当滚动时工具栏始终显示。
<android.support.design.widget.CoordinatorLayout
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/coordinatorlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".screens.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/appbarlayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:minHeight="@dimen/actionBarHeight"
app:contentScrim="@color/colorPrimary"
app:expandedTitleTextAppearance="@style/TransparentText"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="@+id/toolbar_image"
android:layout_width="match_parent"
android:layout_height="180dp"
android:adjustViewBounds="true"
android:background="#229944"
android:contentDescription="@null"
android:scaleType="fitCenter"/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="@dimen/actionBarHeight"
android:minHeight="@dimen/actionBarHeight"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
app:layout_scrollFlags="scroll" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
app:layout_collapseMode="pin"
可以解决问题。这只是一个想法。 - MohK