libgdx视口适合不同的屏幕(libgdx viewport fit different screens)

 我在不同屏幕上安装游戏时遇到问题。 我在舞台类中声明了视口宽度和高度。 
 
public static final int VIEWPORT_WIDTH = 20;
public static final int VIEWPORT_HEIGHT = 30;
 
 我安装了相机 
 
camera = new OrthographicCamera(VIEWPORT_WIDTH, VIEWPORT_HEIGHT);
camera.position.set(camera.viewportWidth/2, camera.viewportHeight/2, 0f);
 
 我在桌面应用程序中将屏幕宽度和高度设置为此 
 
public static final int APP_WIDTH = 800;
public static final int APP_HEIGHT = 900;
 
 在桌面上一切看起来很好，但在我的Android设备上，它看起来向上伸展。 我阅读了有关视口的文档但是如何使用这些变量在这里实现呢？ 我知道有类似的问题，但我想知道可以使用这些特定变量来实现视口，这样我可能会更好地理解它。 

I'm having a problem with fitting my game on different screens. I declared a viewport width and height in my stage class.
 
public static final int VIEWPORT_WIDTH = 20;
public static final int VIEWPORT_HEIGHT = 30;
 
And i set up the camera
 
camera = new OrthographicCamera(VIEWPORT_WIDTH, VIEWPORT_HEIGHT);
camera.position.set(camera.viewportWidth/2, camera.viewportHeight/2, 0f);
 
And i set the screen width and height in desktop app to this
 
public static final int APP_WIDTH = 800;
public static final int APP_HEIGHT = 900;
 
On desktop everything looks fine but on my android device it looks stretched upwards. I read the documentation about viewports but how can I implement it here using these variables? I know similar questions have been asked but I would like to know viewports can be implemented using these specific variables, that way I might understand it better.

原文：https://stackoverflow.com/questions/43388088