RecyclerView向下滚动时如何折叠后隐藏工具栏 [英] How to hide toolbar after collapsing while recyclerView scrolling down
本文介绍了RecyclerView向下滚动时如何折叠后隐藏工具栏的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在recyclerView向下滚动时折叠后隐藏工具栏,在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,滚动时工具栏一直显示。
How to hide toolbar after collapsing while recyclerView scrolling down, show toolbar when recyclerView scrolling up, and expand CollapsingToolbarLayout at the end of list? Now CollapsingToolbarLayout just collapse, and toolbar is showing all time when scrolling.
<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>
推荐答案
这应该可以正常工作。经过测试并在API 17中工作
This should work perfectly. Tested and working in API 17
<android.support.design.widget.CoordinatorLayout
android:id="@+id/careers_coordinator_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".activity.CareersActivity"
xmlns:tools="http://schemas.android.com/tools">
<android.support.design.widget.AppBarLayout
android:id="@+id/appBar"
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="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed">
<ImageView
android:id="@+id/background"
android:layout_width="match_parent"
android:layout_height="256dp"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
android:src="@drawable/placeholder"/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:contentScrim="?attr/colorPrimary"
android:fitsSystemWindows="true"
app:titleTextColor="@color/main_color_white"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin"/>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
app:tabIndicatorColor="@color/colorAccent"
app:tabSelectedTextColor="@color/colorAccent"
app:tabTextColor="@android:color/white"
app:tabIndicatorHeight="4dp"
app:tabMode="fixed"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
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