Android视频播放,但不显示VideoView
当用户改变位置时,我试图在谷歌地图上播放视频。最初在activity_main.xml中,videoview设置为不可见。当视频即将播放时,我将videoview设置为可见,并将ZorDeronTop设置为true 当onLocationChanged触发视频时,视频视图不会出现。但我能听到视频中的音频,所以我知道它在播放 但是,如果我先在onCreate中播放视频,则会成功播放,并显示在屏幕上。此外,onLocationChanged视频也会播放并出现在屏幕上 如果我没有在onCreate中播放视频,为什么视频视图不会出现 activity\u main.xmlAndroid视频播放,但不显示VideoView,android,maps,android-videoview,Android,Maps,Android Videoview,当用户改变位置时,我试图在谷歌地图上播放视频。最初在activity_main.xml中,videoview设置为不可见。当视频即将播放时,我将videoview设置为可见,并将ZorDeronTop设置为true 当onLocationChanged触发视频时,视频视图不会出现。但我能听到视频中的音频,所以我知道它在播放 但是,如果我先在onCreate中播放视频,则会成功播放,并显示在屏幕上。此外,onLocationChanged视频也会播放并出现在屏幕上 如果我没有在onCreate中播
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center" >
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView android:id="@+id/top_message"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:minWidth="110sp" android:textColor="#66CCFF"
android:textStyle="bold" android:textSize="20sp" android:text="Default Text" />
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/map"
android:layout_below="@id/top_message"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal" />
</RelativeLayout>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<VideoView
android:visibility="invisible"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:id="@+id/myVideo"
android:gravity="center"
android:layout_centerInParent="true" />
</RelativeLayout>
</FrameLayout>
setZOrderOnTop()
不能用于动态更改z级别。从
请注意,这必须在曲面视图的包含窗口之前设置
已附加到窗口管理器
附加视图后,对
setZOrderOnTop()
的调用不会产生任何效果。一种解决方案是始终将视频视图
放在顶部,并像您已经做的那样,通过.setVisibility()
控制是否可以看到它。您可以在onCreate()
中使用一个调用setZOrderOnTop()
,这可能就是为什么您在onCreate
中播放视频时它起作用的原因。非常感谢您,没有其他解决方案适合我。令人印象深刻!:)
public class MainActivity extends FragmentActivity implements LocationListener {
private GoogleMap googleMap;
private TextView distanceTextView;
private VideoView videoView;
private LocationManager locationManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// setup overlay for text
distanceTextView = (TextView)findViewById(R.id.top_message);
distanceTextView.setText("Text set onCreate");
// setup overlay for video
videoView = (VideoView) findViewById(R.id.myVideo);
// setup google map data
googleMap = ((SupportMapFragment)(getSupportFragmentManager().findFragmentById(R.id.map))).getMap();
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
googleMap.getUiSettings().setCompassEnabled(true);
googleMap.getUiSettings().setZoomControlsEnabled(true);
googleMap.setMyLocationEnabled(true);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 1, this);
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
// set current location and move map to that location
if (location != null) {
LatLng myPosition = new LatLng(location.getLatitude(),location.getLongitude());
googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(myPosition, 15));
}
// if below is uncommented then secondvideo will also appear
//playVideo(new String("android.resource://" + getPackageName() + "/" + R.raw.firstvideo));
}
public void onLocationChanged(Location location) {
locationManager.removeUpdates(this);
distanceTextView.setText("Location has changed");
playVideo(new String("android.resource://" + getPackageName() + "/" + R.raw.secondvideo));
}
private void playVideo(String videoFile) {
videoView.setVisibility(View.VISIBLE);
videoView.setZOrderOnTop(true);
MediaController mediaController = new MediaController(this);
mediaController.setAnchorView(videoView);
videoView.setMediaController(mediaController);
videoView.setVideoPath(videoFile);
videoView.start();
videoView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
videoView.setVisibility(View.INVISIBLE);
videoView.setZOrderOnTop(false);
videoView.stopPlayback();
return false;
}
});
}
@Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
}