android活动中的videoview需要很长时间才能加载

Question

我有一个Android活动，我将视频加载到视频中并进行播放。问题是，当我启动活动时，屏幕呈黑色约15秒，然后才会出现任何内容并播放视频。这是我的代码。

public class welcomevideo extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_welcomevideo);
    VideoView vidView = (VideoView)findViewById(R.id.myVideo);
    String vidadress = "**";
    Uri vidUri = Uri.parse(vidadress);
    vidView.setVideoURI(vidUri);
    MediaController vidControl = new MediaController(this);
    vidView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mediaPlayer) {
            Intent setIntent = new Intent(welcomevideo.this,AllGameslistActivity.class);
            startActivity(setIntent);
            finish();
        }
    });
    vidControl.setAnchorView(vidView);
    vidView.setMediaController(vidControl);
    vidView.start();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_welcomevideo, menu);
    return true;
}
public void yoe(View v) {
    Intent e = new Intent(welcomevideo.this,AllGameslistActivity.class);
    startActivity(e);
    finish();
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}
@Override
public void onBackPressed() {
    Intent setIntent = new Intent(welcomevideo.this,AllGameslistActivity.class);
    startActivity(setIntent);
    finish();
}
@Override
protected void onPause()
{
    super.onPause();
    //closing transition animations
    overridePendingTransition(R.anim.activity_open_scale, R.anim.ctivity_close_translate);
}

}