我有一个自定义主详细信息流,我希望它具有像您在默认模板中找到的折叠工具栏效果。我不理解嵌套让它工作。
我的活动有两种变体:
主从流程
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false"
android:divider="?android:attr/dividerHorizontal"
android:orientation="horizontal"
tools:context="com.example.android.sunshine.app.MainActivity">
<!--
This layout is a two-pane layout for the Items master/detail flow.
-->
<fragment
android:id="@+id/fragment_main"
android:name="xyz.selfenrichment.robertotomas.three_two_one_rotate.MainFragment"
android:tag="@string/tag_gridview_one_column"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3"
tools:context="xyz.selfenrichment.robertotomas.three_two_one_rotate.MainFragment"
tools:layout="@layout/fragment_main" />
<FrameLayout
android:id="@+id/fragmentcontainer_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
tools:layout="@layout/fragment_detail" />
</LinearLayout>
单窗格
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/fragment_main"
android:name="xyz.selfenrichment.robertotomas.three_two_one_rotate.MainFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:tag="@string/tag_gridview_two_columns"
tools:context="xyz.selfenrichment.robertotomas.three_two_one_rotate.MainFragment"
tools:layout="@android:layout/list_content" />
我相信我的折叠工具栏应该是这样的:
<android.support.design.widget.CoordinatorLayout ...
...
<android.support.design.widget.AppBarLayout ...
...
<android.support.design.widget.CollapsingToolbarLayout ...
...
<android.support.v7.widget.Toolbar
现在,我必须将两者结合起来并添加布局行为,例如:
主从流程
<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="xyz.selfenrichment.robertotomas.popularmovies.PosterBoardActivity">
<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>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false"
android:divider="?android:attr/dividerHorizontal"
android:orientation="horizontal"
tools:context="com.example.android.sunshine.app.MainActivity"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<!--
This layout is a two-pane layout for the Items master/detail flow.
-->
<fragment
android:id="@+id/fragment_main"
android:name="xyz.selfenrichment.robertotomas.popularmovies.MainFragment"
android:tag="@string/tag_gridview_one_column"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3"
tools:context="xyz.selfenrichment.robertotomas.popularmovies.MainFragment"
tools:layout="@layout/fragment_main" />
<FrameLayout
android:id="@+id/fragmentcontainer_detail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
tools:layout="@layout/fragment_detail" />
</LinearLayout>
<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"
android:src="@android:drawable/ic_menu_manage"
app:layout_anchor="@id/app_bar"
app:layout_anchorGravity="bottom|end" />
</android.support.design.widget.CoordinatorLayout>
但是,如果我将布局行为添加到fragment
标签或底层片段 xml(或两者):
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/grid_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:horizontalSpacing="10dp"
android:verticalSpacing="10dp"
android:stretchMode="columnWidth"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
无论哪种方式都没有关系,滚动 gridview 不会折叠工具栏。
编辑:这特别令人困惑,因为我在这里看到了一个非常相似的示例,显然确实有效。