如何在panoramaGl中查看图像全屏，它在android中显示屏幕的一角

Question

public class PanoramaGLActivity extends PLView
{
/**init methods*/

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    //Load panorama
    PLSpherical2Panorama panorama = new PLSpherical2Panorama();
    panorama.getCamera().lookAt(30.0f, 90.0f);
    panorama.setImage(new PLImage(PLUtils.getBitmap(this, R.raw.spherical_pano), false));
    this.setPanorama(panorama);

}

结果屏幕：

https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcSSZ82iDt2EMnlR71VHe0-vdMp2JnUcaW2RGYVHK_trXzvrkNwphQ

如何全屏显示？