安卓 利用videoView 播放资源文件 并且全屏播放 适用于闪屏页

int width = this.getWindowManager().getDefaultDisplay().getWidth();    int height = this.getWindowManager().getDefaultDisplay().getHeight();    Uri uri = Uri.parse("android.resource://" + getPackageName() + "/"            + R.raw.qidongfirst);    tiaoguo = (Button) findViewById(R.id.tiaoguo);    videoView = (VideoView) findViewById(R.id.video);    if (videoView != null ) {        ViewGroup.LayoutParams lp = videoView.getLayoutParams();        lp.width = width;        lp.height = height;        videoView.setLayoutParams(lp);        videoView.setVideoURI(uri);            videoView.start();}