Cra*_*der 6 java android material-design android-cardview android-coordinatorlayout
我有滚动活动,其中有一个 CardView,其行为类似于此动画中所示的浮动操作按钮。
正如您所看到的,fab 正在淡入淡出(进出),但卡片视图的行为并非如此。
我的layout.xml如下:
<?xml version="1.0" encoding="utf-8"?>
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.rhcloud.arshadali.task.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar"
android:layout_width="match_parent"
android:layout_height="@dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_scrolling" />
<android.support.v7.widget.CardView
android:id="@+id/id_card"
android:layout_width="match_parent"
android:layout_height="46dp"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end"
android:foreground="@android:color/white"
android:layout_margin="5dp">
<ImageView
android:id="@+id/app_googleplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxWidth="30dp"
android:maxHeight="30dp"
android:layout_gravity="center_vertical"/>
<TextView
android:id="@+id/app_apk"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="com.javiersantos"
android:fontFamily="sans-serif-thin"
android:textColor="@android:color/black"
android:gravity="center"/>
</android.support.v7.widget.CardView>
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end"
app:srcCompat="@android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
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有什么方法可以实现这一目标吗?
我认为卡片视图应该是折叠工具栏的子级,以便发生效果(将其放置在工具栏上方)。
<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:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.rhcloud.arshadali.task.ScrollingActivity">
<android.support.design.widget.AppBarLayout
android:id="@+id/app_bar"
android:layout_width="match_parent"
android:layout_height="@dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.CardView
android:id="@+id/id_card"
android:layout_width="match_parent"
android:layout_height="46dp"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end"
android:foreground="@android:color/white"
android:layout_margin="5dp">
<ImageView
android:id="@+id/app_googleplay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxWidth="30dp"
android:maxHeight="30dp"
android:layout_gravity="center_vertical"/>
<TextView
android:id="@+id/app_apk"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="com.javiersantos"
android:fontFamily="sans-serif-thin"
android:textColor="@android:color/black"
android:gravity="center"/>
</android.support.v7.widget.CardView>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_scrolling" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/fab_margin"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end"
app:srcCompat="@android:drawable/ic_dialog_email" />
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