VideoView 位于 SurfaceView 之上
我尝试在 SurfaceView
之上显示 VideoView
。但它不可见,但会对点击做出反应(MediaController 出现并播放声音)。该视频似乎在 SurfaceView
后面播放,因此我也尝试使用 setZOrderMediaOverlay()
和/或 setZOrderOnTop()
但没有任何改变
当我进入主屏幕时,我在褪色动画中瞬间看到了 VideoView,所以它确实存在。
我用 xml 布局尝试过,也完全以编程方式尝试过,但没有任何效果。
这是我的活动:
public class VideoTest extends Activity {
private RelativeLayout mLayout;
private VideoView mVideo;
private Handler mHandler;
private FrameLayout mFrameLayout;
private SurfaceView mSurfaceView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFrameLayout = new FrameLayout(this);
mFrameLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mLayout = new RelativeLayout(this);
mLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mVideo = new VideoView(this);
mVideo.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mSurfaceView = new SurfaceView(this);
mSurfaceView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mSurfaceView.setZOrderMediaOverlay(false);
mSurfaceView.setZOrderOnTop(false);
mFrameLayout.addView(mSurfaceView);
mLayout.addView(mVideo);
mFrameLayout.addView(mLayout);
setContentView(mFrameLayout);
// with xml
// setContentView(R.layout.main);
// mFrameLayout = (FrameLayout) findViewById(R.id.activity_reader);
// mLayout = (RelativeLayout) findViewById(R.id.videoview);
// mVideo = (VideoView) findViewById(R.id.video_view);
// mSurfaceView = (SurfaceView) findViewById(R.id.surface_view);
// Set the handler to me messaged from the threads
mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg != null) {
mVideo.setMediaController(new MediaController(mVideo.getContext()));
mVideo.setVideoPath("/mnt/sdcard/myvideo.mp4");
if (mLayout.getVisibility() == View.VISIBLE) {
mLayout.setVisibility(View.GONE);
} else {
mLayout.setVisibility(View.VISIBLE);
}
// mFrameLayout.bringChildToFront(mLayout);
// mFrameLayout.bringChildToFront(mVideo);
// mFrameLayout.requestLayout();
// mFrameLayout.invalidate();
// mFrameLayout.postInvalidate();
// mVideo.requestFocus();
}
super.handleMessage(msg);
}
};
}
/** Inflate the menu */
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.activity_reader_menu, menu);
return true;
}
/** Handle menu items events */
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.toggle_video:
new Thread() {
public void run() {
mHandler.sendEmptyMessage(0);
};
}.start();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
我的 xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/activity_reader"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<SurfaceView android:id="@+id/surface_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<RelativeLayout android:id="@+id/videoview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone">
<VideoView android:id="@+id/video_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
</FrameLayout>
一个提示:由于这只是一项测试,以找出它不起作用的原因,因此我尝试最小化真实应用程序中的代码,其中 VideoView
的可见性为由从 SurfaceView 的绘图线程获取消息的处理程序控制。这就是为什么我在使用菜单时实现了一个发送消息的线程的原因。
I try to show a VideoView
on top of a SurfaceView
. But it isn't visible but reacts on clicks (MediaController appears and the sound plays). The video seems to be played behind the SurfaceView
so I also tried to make use of setZOrderMediaOverlay()
and/or setZOrderOnTop()
but nothing changed
When I go to the home screen I see the VideoView for a split second in the fading animation, so it is really there.
I tried it with a xml layout and also completely programmatically but nothing works.
Here is my activity:
public class VideoTest extends Activity {
private RelativeLayout mLayout;
private VideoView mVideo;
private Handler mHandler;
private FrameLayout mFrameLayout;
private SurfaceView mSurfaceView;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mFrameLayout = new FrameLayout(this);
mFrameLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mLayout = new RelativeLayout(this);
mLayout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mVideo = new VideoView(this);
mVideo.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
mSurfaceView = new SurfaceView(this);
mSurfaceView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
mSurfaceView.setZOrderMediaOverlay(false);
mSurfaceView.setZOrderOnTop(false);
mFrameLayout.addView(mSurfaceView);
mLayout.addView(mVideo);
mFrameLayout.addView(mLayout);
setContentView(mFrameLayout);
// with xml
// setContentView(R.layout.main);
// mFrameLayout = (FrameLayout) findViewById(R.id.activity_reader);
// mLayout = (RelativeLayout) findViewById(R.id.videoview);
// mVideo = (VideoView) findViewById(R.id.video_view);
// mSurfaceView = (SurfaceView) findViewById(R.id.surface_view);
// Set the handler to me messaged from the threads
mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg != null) {
mVideo.setMediaController(new MediaController(mVideo.getContext()));
mVideo.setVideoPath("/mnt/sdcard/myvideo.mp4");
if (mLayout.getVisibility() == View.VISIBLE) {
mLayout.setVisibility(View.GONE);
} else {
mLayout.setVisibility(View.VISIBLE);
}
// mFrameLayout.bringChildToFront(mLayout);
// mFrameLayout.bringChildToFront(mVideo);
// mFrameLayout.requestLayout();
// mFrameLayout.invalidate();
// mFrameLayout.postInvalidate();
// mVideo.requestFocus();
}
super.handleMessage(msg);
}
};
}
/** Inflate the menu */
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.activity_reader_menu, menu);
return true;
}
/** Handle menu items events */
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.toggle_video:
new Thread() {
public void run() {
mHandler.sendEmptyMessage(0);
};
}.start();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
My xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/activity_reader"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<SurfaceView android:id="@+id/surface_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<RelativeLayout android:id="@+id/videoview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone">
<VideoView android:id="@+id/video_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
</FrameLayout>
One hint: As this is only a test to find out why it isn't working I tried to minimize the code from my real application where the visibility of the VideoView
is controlled by a handler who get a message from the drawing thread of the SurfaceView
. Thats the reason why I implemented a thread sending the message when the menu was used.
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根据 此线程<,我认为您不能拥有重叠的 SurfaceViews /a> Android框架工程师的回答:
I don't think that you can have overlapping SurfaceViews, according to this thread answered by an Android framework engineer: