diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.java
deleted file mode 100644
index 0ad589fe40..0000000000
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.java
+++ /dev/null
@@ -1,55 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package org.dolphinemu.dolphinemu.features.input.ui;
-
-import android.view.LayoutInflater;
-import android.view.ViewGroup;
-
-import androidx.annotation.NonNull;
-import androidx.recyclerview.widget.RecyclerView;
-
-import org.dolphinemu.dolphinemu.databinding.ListItemAdvancedMappingControlBinding;
-
-import java.util.function.Consumer;
-
-public final class AdvancedMappingControlAdapter
-        extends RecyclerView.Adapter<AdvancedMappingControlViewHolder>
-{
-  private final Consumer<String> mOnClickCallback;
-
-  private String[] mControls = new String[0];
-
-  public AdvancedMappingControlAdapter(Consumer<String> onClickCallback)
-  {
-    mOnClickCallback = onClickCallback;
-  }
-
-  @NonNull @Override
-  public AdvancedMappingControlViewHolder onCreateViewHolder(@NonNull ViewGroup parent,
-          int viewType)
-  {
-    LayoutInflater inflater = LayoutInflater.from(parent.getContext());
-
-    ListItemAdvancedMappingControlBinding binding =
-            ListItemAdvancedMappingControlBinding.inflate(inflater);
-    return new AdvancedMappingControlViewHolder(binding, mOnClickCallback);
-  }
-
-  @Override
-  public void onBindViewHolder(@NonNull AdvancedMappingControlViewHolder holder, int position)
-  {
-    holder.bind(mControls[position]);
-  }
-
-  @Override
-  public int getItemCount()
-  {
-    return mControls.length;
-  }
-
-  public void setControls(String[] controls)
-  {
-    mControls = controls;
-    notifyDataSetChanged();
-  }
-}
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.kt b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.kt
new file mode 100644
index 0000000000..1c82616726
--- /dev/null
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/AdvancedMappingControlAdapter.kt
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.dolphinemu.dolphinemu.features.input.ui
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.recyclerview.widget.RecyclerView
+import org.dolphinemu.dolphinemu.databinding.ListItemAdvancedMappingControlBinding
+import java.util.function.Consumer
+
+class AdvancedMappingControlAdapter(private val onClickCallback: Consumer<String>) :
+    RecyclerView.Adapter<AdvancedMappingControlViewHolder>() {
+    private var controls = emptyArray<String>()
+
+    override fun onCreateViewHolder(
+        parent: ViewGroup,
+        viewType: Int
+    ): AdvancedMappingControlViewHolder {
+        val inflater = LayoutInflater.from(parent.context)
+        val binding = ListItemAdvancedMappingControlBinding.inflate(inflater)
+        return AdvancedMappingControlViewHolder(binding, onClickCallback)
+    }
+
+    override fun onBindViewHolder(holder: AdvancedMappingControlViewHolder, position: Int) =
+        holder.bind(controls[position])
+
+    override fun getItemCount(): Int = controls.size
+
+    fun setControls(controls: Array<String>) {
+        this.controls = controls
+        notifyDataSetChanged()
+    }
+}