ios saving screenshots

ios/src/java/advent/core/Saver.java

@@ -0,0 +1,38 @@
+package advent.core;
+
+import org.robovm.apple.uikit.*;
+import org.robovm.apple.coregraphics.*;
+import org.robovm.apple.foundation.*;
+import com.badlogic.gdx.*;
+import com.badlogic.gdx.graphics.*;
+import com.badlogic.gdx.backends.iosrobovm.*;
+
+public class Saver {
+    
+    public static Pixmap takeScreenshot(){
+
+        UIImage newImage;
+        UIGraphics.beginImageContext(new CGSize(1280, 960));
+        ((IOSApplication) Gdx.app).getUIViewController().getView().drawViewHierarchy(
+            new CGRect(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()) , true);
+        newImage = UIGraphics.getImageFromCurrentImageContext();
+        UIGraphics.endImageContext();  
+
+        NSData data = newImage.toPNGData();
+        newImage.dispose();
+
+        PixmapIO.PNG p = new PixmapIO.PNG();
+        Pixmap stepResult = new Pixmap(data.getBytes(), 0, data.getBytes().length);
+        p.setFlipY(true);
+        try {
+            p.write(Gdx.files.local("screenshot.png"), stepResult);
+            stepResult.dispose();
+            p.dispose();
+
+            return new Pixmap(Gdx.files.local("screenshot.png"));
+
+        } catch (Exception e) {
+            return new Pixmap(160, 120, Pixmap.Format.RGBA8888);
+        }
+    }
+}