视频无法正常播放

new VideoPlayer(this, getWindowManager().getDefaultDisplay().getWidth(), getWindowManager().getDefaultDisplay().getHeight());

public class VideoPlayer extends VideoView {

private int width;
private int height;

public VideoPlayer(Context context, int width, int height) {
    super(context);
    this.width = width;
    this.height = height;
}

public VideoPlayer(Context context, AttributeSet attrs) {
    super(context, attrs);
}
@Override
protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec)
{
     setMeasuredDimension(width, height);
}
}