I am trying to get LibGDX to take a screen shot of the devices screen and then load that screenshot into a Sprite to render later. However when I try it the app crashes with a NullPointerException. I have tried the following links: taking screenshot in libgdx, and using ScreenUtils to save screenshot as image in libgdx. When I try to create the Texture for the Sprite then it crashes with NullPointerException.
I have also tried the ScreenUtils.getFrameBufferTexture(); method, and the ScreenUtils.getFrameBufferPixmap() method but always they crash with a NullPointerException. The line they crash on changes depending upon the way I have chosen to get the screen shot, and I have confirmed that indeed the Pixmap or TextureRegion is created when the screenshot is taken. It is when I try to either load it into a Texture or the Sprite that it crashes with a NullPointerException.
PLEASE DO NOT mark this as a duplicate question as I am not trying to save the screenshot into a PNG. I am trying to use it directly in a Sprite and it is crashing.
Code and stack trace for creating a TextureRegion:
// create the screen shot
UT.screenShot = ScreenUtils.getFrameBufferTexture(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
// Use screenshot
screenShot = new Sprite(UT.screenShot);
I get this stack trace:
Exception in thread "LWJGL Application" java.lang.NullPointerException
at com.badlogic.gdx.graphics.g2d.TextureRegion.setRegion(TextureRegion.java:112)
at com.badlogic.gdx.graphics.g2d.Sprite.<init>(Sprite.java:83)
at *** MY CODE *** CompleteScreen.java:83
at *** MY CODE *** GameEngine.java:82
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:206)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114)
This is only one of the ways I have used to create the screenshot. But all the ways use the ScreenUtils class to get the screenshot. All these ways do indeed create a screenshot. However all these ways fail when trying to create a Sprite or Texture.
Code and stack trace for creating a Pixmap:
// create the screen shot
UT.screenShot = ScreenUtils.getFrameBufferPixmap(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
// Use screenshot
Texture texture = new Texture(UT.screenShot);
screenShot = new Sprite(texture);
I get this stack trace:
Exception in thread "LWJGL Application" java.lang.NullPointerException
at com.badlogic.gdx.graphics.glutils.PixmapTextureData.<init>(PixmapTextureData.java:37)
at com.badlogic.gdx.graphics.glutils.PixmapTextureData.<init>(PixmapTextureData.java:32)
at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:104)
at *** MY CODE *** CompleteScreen.java:84
at *** MY CODE *** GameEngine.java:82
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:206)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114)
