当我尝试使用SurfaceView从相机进行预览时，为什么我的应用程序崩溃？

Question

当我尝试在Android上使用SurfaceView从相机进行预览时，为什么我的应用程序崩溃？ 当我构建Android Studio没有错误。

这是代码：

public class MainActivity extends ActionBarActivity implements SurfaceHolder.Callback
{
    private Camera camera; 
    static private SurfaceView surfaceView; 
    private SurfaceHolder surfaceHolder; 

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getWindow().setFormat(PixelFormat.TRANSLUCENT);
        requestWindowFeature(Window.FEATURE_NO_TITLE); 
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 
        surfaceView = (SurfaceView)findViewById(R.id.camera_surface);
        surfaceHolder = surfaceView.getHolder(); 
        surfaceHolder.addCallback(this);
    }

    public void surfaceCreated(SurfaceHolder holder)
    {
        camera = Camera.open();
    }

    public void surfaceDestroyed(SurfaceHolder holder)
    {
        camera.release();
    }

    public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3)
    {
        try
        {
            camera.setPreviewDisplay(arg0);
            camera.startPreview();
        }
        catch(IOException e)
        {
            e.printStackTrace();
        }
    }
}

有人可以帮助我吗？我会等你的回答。