VideoView与百度Map冲突

我在VideoView上面放了一个百度的MapView，如果视频不播放的话，就是不调用VideoView的start方法，MapView能正常显示，一旦调用start方法，MapView就会变黑，只显示比例尺和缩放按钮。
布局文件如下:

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
    android:id="@+id/back_image"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/saber"/>
<com.seawolf.test.FullScreeVideoView
    android:id="@+id/video"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="@dimen/activity_vertical_margin">
    <TextView
        android:id="@+id/yaw_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="left|center_vertical"
        android:text="yaw"
        android:layout_centerVertical="true"
        android:layout_alignParentStart="true" />
    <TextView
        android:id="@+id/pitch_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@id/yaw_text"
        android:text="pitch"/>
    <TextView
        android:id="@+id/roll_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="roll"
        android:layout_above="@id/pitch_text"/>

    <com.seawolf.test.NavController
        android:id="@+id/navController"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"/>
    <com.baidu.mapapi.map.MapView
        android:id="@+id/map"
        android:layout_width="120dp"
        android:layout_height="100dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true"
        android:layout_alignTop="@+id/navController"
        android:background="@color/white"/>
</RelativeLayout>

</FrameLayout>

public void init() {


        back_image = (ImageView) findViewById(R.id.back_image);

        mController = new MediaController(this);
        mVideo = (VideoView) findViewById(R.id.video);

        File video = new File("/storage/sdcard1/hd.mp4");
        if(video.exists())
        {
            mVideo.setVideoPath(video.getAbsolutePath());  // ①
            // 设置videoView与mController建立关联
            mVideo.setMediaController(mController);  // ②
            // 设置mController与videoView建立关联
            mController.setMediaPlayer(mVideo);  // ③
            // 让VideoView获取焦点
          //  mVideo.requestFocus();
            mVideo.setVisibility(View.INVISIBLE);
        }else Toast.makeText(MainActivity.this,"The Video is not exist.",Toast.LENGTH_SHORT).show();

        mMapView = (MapView) findViewById(R.id.map);
        mMapView.setVisibility(View.INVISIBLE);

        navController = (NavController) findViewById(R.id.navController);
        navController.setVisibility(View.INVISIBLE);

        navController.setOnNavAndSpeedListener(new NavController.OnNavAndSpeedListener() {
            @Override
            public void onNavAndSpeed(float nav, float speed) {
                Toast.makeText(MainActivity.this, "nav is " + nav + ",speed is " + speed, Toast.LENGTH_SHORT).show();
            }
        });
    }

    private void videoStart()
    {
        mVideo.setVisibility(View.VISIBLE);
        mMapView.setVisibility(View.VISIBLE);
        navController.setVisibility(View.VISIBLE);

       // mVideo.start();
    }

---

VideoView和MapView都可以理解为SurfaceView。
你可以给VideoView设置：setZOrderMediaOverlay(true);试试

参考：
链接1
链接2