diff --git a/tests/SilkFX/res/layout/activity_glass.xml b/tests/SilkFX/res/layout/activity_glass.xml
index a7b76bdeba092..7af68a9acbe61 100644
--- a/tests/SilkFX/res/layout/activity_glass.xml
+++ b/tests/SilkFX/res/layout/activity_glass.xml
@@ -219,6 +219,19 @@
         app:layout_constraintStart_toEndOf="@+id/background2"
         android:src="@drawable/background3" />
 
+    <Button
+        android:id="@+id/pickImage"
+        android:layout_width="64dp"
+        android:layout_height="64dp"
+        android:layout_marginStart="8dp"
+        android:scaleType="centerCrop"
+        android:foreground="?android:attr/selectableItemBackgroundBorderless"
+        android:clickable="true"
+        android:onClick="onPickImageClick"
+        app:layout_constraintBottom_toBottomOf="@+id/background1"
+        app:layout_constraintStart_toEndOf="@+id/background3"
+        android:text="Pick file" />
+
     <Switch
         android:id="@+id/lightMaterialSwitch"
         android:layout_width="wrap_content"
diff --git a/tests/SilkFX/src/com/android/test/silkfx/materials/GlassActivity.kt b/tests/SilkFX/src/com/android/test/silkfx/materials/GlassActivity.kt
index 72b342c54d19e..85b2bdaa33887 100644
--- a/tests/SilkFX/src/com/android/test/silkfx/materials/GlassActivity.kt
+++ b/tests/SilkFX/src/com/android/test/silkfx/materials/GlassActivity.kt
@@ -16,6 +16,7 @@
 package com.android.test.silkfx.materials
 
 import android.app.Activity
+import android.content.Intent
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.graphics.Color
@@ -47,7 +48,12 @@ class GlassActivity : Activity(), SeekBar.OnSeekBarChangeListener {
     lateinit var blurRadiusValue: TextView
     lateinit var zoomValue: TextView
 
-    lateinit var background: Bitmap
+    var background: Bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888)
+    set(value) {
+        field = value
+        backgroundView.setImageBitmap(background)
+        materialView.backgroundBitmap = background
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -70,8 +76,6 @@ class GlassActivity : Activity(), SeekBar.OnSeekBarChangeListener {
         zoomValue = requireViewById(R.id.zoomValue)
 
         background = BitmapFactory.decodeResource(resources, R.drawable.background1)
-        backgroundView.setImageBitmap(background)
-        materialView.backgroundBitmap = background
 
         blurRadiusSeekBar.setOnSeekBarChangeListener(this)
         materialOpacitySeekBar.setOnSeekBarChangeListener(this)
@@ -128,7 +132,23 @@ class GlassActivity : Activity(), SeekBar.OnSeekBarChangeListener {
         }
 
         background = BitmapFactory.decodeResource(resources, resource)
-        backgroundView.setImageBitmap(background)
-        materialView.backgroundBitmap = background
+    }
+
+    fun onPickImageClick(view: View) {
+        val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = "image/*"
+        }
+        startActivityForResult(intent, 0)
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        if (resultCode === RESULT_OK) {
+            data?.data?.also {
+                contentResolver.openFileDescriptor(it, "r").let {
+                    background = BitmapFactory.decodeFileDescriptor(it?.fileDescriptor)
+                }
+            }
+        }
     }
 }
\ No newline at end of file