无法以所需的方式更改方向

Question

我正在单击按钮将我的应用程序更改为横向，但问题是我在纵向模式下有一个固定高度的列表视图和视频视图，切换到横向模式后，我只想显示视频视图，但视频视图显示该高度，但我想将其显示为全屏。

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:id="@+id/relative2">
<VideoView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_alignParentRight="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:visibility="visible"
    android:id="@+id/video"
    />
<ProgressBar
    android:id="@+id/progressbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:visibility="invisible" />

    <ImageView
        android:id="@+id/full"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="5dp"
        android:layout_marginRight="10dp"
        android:src="@drawable/ic_fullscreen"
        android:visibility="visible"/>
    <ImageView
        android:id="@+id/potrait"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="5dp"
        android:layout_marginRight="10dp"
        android:src="@drawable/ic_normal_screen"
        android:visibility="invisible"/>
</RelativeLayout>
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@id/relative2">
<ListView
    android:id="@+id/play_list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:divider="@color/material_blue_grey_800"
    android:dividerHeight="1dp"
    android:footerDividersEnabled="false"
    android:visibility="visible"/>
</RelativeLayout>

和用于更改方向的代码：

full.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            defaultScreenOrientationMode = getResources().getConfiguration().orientation;
            defaultVideoViewParams = (RelativeLayout.LayoutParams) videoview.getLayoutParams();
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            full.setVisibility(view.GONE);
            potrait.setVisibility(view.VISIBLE);
            play_list.setVisibility(View.GONE);

            videoview.postDelayed(new Runnable() {
                @Override
                public void run() {
                    RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) new RelativeLayout.LayoutParams(
                            RelativeLayout.LayoutParams.MATCH_PARENT,
                            RelativeLayout.LayoutParams.MATCH_PARENT);
            //     mc.show(0);
                }
            }, 700);
        }
    });
    potrait.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            int defaultScreenOrientationMode;
            potrait.setVisibility(view.INVISIBLE);
            full.setVisibility(view.VISIBLE);
           play_list.setVisibility(view.VISIBLE);
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
            videoview.postDelayed(new Runnable() {
                @Override
                public void run() {
                    videoview.setLayoutParams(defaultVideoViewParams);
                    videoview.layout(10, 10, 10, 10);
                //    mc.show(0);
                }
            }, 700);
        }
    });

Answer 1

要在方向更改时停止重新加载活动，请在清单中编写以下代码

<activity
    android:name=".YourActivityName"
    android:configChanges="orientation|screenSize">
</activity>

Answer 2

LinearLayout layout = /* ... */;
layout.setOrientation(LinearLayout.VERTICAL);