diff --git a/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.java b/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.java
deleted file mode 100644
index b2bda1c573..0000000000
--- a/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.java
+++ /dev/null
@@ -1,62 +0,0 @@
-/**
- * Paintroid: An image manipulation application for Android.
- * Copyright (C) 2010-2015 The Catrobat Team
- * (<http://developer.catrobat.org/credits>)
- * <p/>
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- * <p/>
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- * <p/>
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-package org.catrobat.paintroid.intro;
-
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-
-import androidx.annotation.VisibleForTesting;
-import androidx.viewpager.widget.PagerAdapter;
-
-public class IntroPageViewAdapter extends PagerAdapter {
-	@VisibleForTesting
-	public int[] layouts;
-
-	public IntroPageViewAdapter(int[] layouts) {
-		this.layouts = new int[layouts.length];
-		System.arraycopy(layouts, 0, this.layouts, 0, this.layouts.length);
-	}
-
-	@Override
-	public Object instantiateItem(ViewGroup container, int position) {
-		LayoutInflater layoutInflater = LayoutInflater.from(container.getContext());
-
-		View view = layoutInflater.inflate(layouts[position], container, false);
-		container.addView(view);
-		return view;
-	}
-
-	@Override
-	public int getCount() {
-		return layouts.length;
-	}
-
-	@Override
-	public boolean isViewFromObject(View view, Object obj) {
-		return view == obj;
-	}
-
-	@Override
-	public void destroyItem(ViewGroup container, int position, Object object) {
-		View view = (View) object;
-		container.removeView(view);
-	}
-}
diff --git a/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.kt b/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.kt
new file mode 100644
index 0000000000..bfba16a1b4
--- /dev/null
+++ b/Paintroid/src/main/java/org/catrobat/paintroid/intro/IntroPageViewAdapter.kt
@@ -0,0 +1,45 @@
+/**
+ * Paintroid: An image manipulation application for Android.
+ * Copyright (C) 2010-2015 The Catrobat Team
+ * (<http:></http:>//developer.catrobat.org/credits>)
+ *
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http:></http:>//www.gnu.org/licenses/>.
+ */
+package org.catrobat.paintroid.intro
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.viewpager.widget.PagerAdapter
+
+class IntroPageViewAdapter(val layouts: IntArray) : PagerAdapter() {
+
+    override fun instantiateItem(container: ViewGroup, position: Int): Any {
+        val inflater = LayoutInflater.from(container.context)
+        val view = inflater.inflate(layouts[position], container, false)
+        container.addView(view)
+        return view
+    }
+
+    override fun getCount(): Int = layouts.size
+
+    override fun isViewFromObject(view: View, obj: Any): Boolean = view === obj
+
+    override fun destroyItem(container: ViewGroup, position: Int, `object`: Any) {
+        container.removeView(`object` as View)
+    }
+}