问题描述:
【Android版本】:Android 8.1.0
【预置条件】在时钟界面添加多个不同国家世界时钟
【操作步骤】
 1.竖屏下滑动查看
 2.切换至横屏滑动查看
【实际结果】
  2.横屏下出现滑动条不动,时钟界面自己在不停的更新,见视频
【期望结果】
 横屏下可正常滑动查看
问题分析:
 1) 找到滑动的View的布局代码在
竖屏是布局:packages/apps/DeskClock/res/layout/clock_fragment.xml1
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11<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/cities"
    android:layout_width="0dp"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:clickable="false"
    android:clipToPadding="false"
    android:paddingBottom="@dimen/fab_height"
    android:scrollbarStyle="outsideOverlay"
    android:scrollbars="vertical" />
横屏的布局:packages/apps/DeskClock/res/layout-land/clock_fragment.xml1
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50<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <!-- Left gutter. -->
    <Space
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="@integer/gutter_width_percent" />
    <!-- Clock: 62% of total width (4% given to right gutter). -->
    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="62"
        android:gravity="center"
        android:paddingBottom="@dimen/fab_height">
        <include
            android:id="@+id/main_clock_left_pane"
            layout="@layout/main_clock_frame"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="29" />
        <!-- Right gutter. -->
        <Space
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="2" />
    </LinearLayout>
    <!-- World Clock List: 33% of total width. Right gutter is applied in world_clock_item. -->
    <android.support.v7.widget.RecyclerView
        android:id="@+id/cities"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="33"
        android:clickable="false"
        android:clipToPadding="false"
        android:paddingBottom="@dimen/fab_height"
        android:paddingTop="16dp"
        android:scrollbarStyle="outsideOverlay"
        android:scrollbars="vertical" />
</LinearLayout>
Java代码实现滑动:packages/apps/DeskClock/src/com/android/deskclock/ClockFragment.java