WearableActionDrawer peek视图不隐藏

Question

我正在尝试在我的应用中使用WearableActionDrawer。以前我使用'com.google.android.support:wearable:2.0.0-alpha1'，我的布局如下：

<?xml version="1.0" encoding="utf-8"?>
<android.support.wearable.view.drawer.WearableDrawerLayout
    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/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:rectLayout="@layout/rect_activity_main"
    app:roundLayout="@layout/round_activity_main"
    tools:context="com.example.grant.wearableclimbtracker.MainActivity"
    tools:deviceIds="wear">

    <android.support.v4.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id = "@+id/content_frame">
        <android.support.wearable.view.GridViewPager
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </android.support.v4.widget.NestedScrollView>

    <android.support.wearable.view.drawer.WearableNavigationDrawer
        android:id = "@+id/top_navigation_drawer"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:background="@color/dark_grey"/>

    <android.support.wearable.view.drawer.WearableActionDrawer
        android:id="@+id/bottom_action_drawer"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/grey" />
</android.support.wearable.view.drawer.WearableDrawerLayout>

切换到'com.google.android.support:wearable:2.0.0'后，行为发生了变化。动作抽屉过去一直不在视野中，直到我向上滑动以显示动作菜单，但现在除非我打开菜单并选择一些内容，否则抽屉的视图不会消失。这是预期的行为吗？它占用了大量的房地产：

非常感谢任何建议。

Answer 1

正如我所怀疑的那样，当NestedScrollingChild高度与父视图匹配时，动作抽屉会查看。我可以隐藏的唯一方法是将NestedScrollingChild视图增加1dp：

// get the screen width
DisplayMetrics metrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics);

// set height of framelayout to be slightly larger than view
mSessionLayout = rootView.findViewById(R.id.sessionLayout);
mSessionLayout.setMinimumHeight(metrics.heightPixels+1);