what done?

particlelab/src/main/res/drawable/unlock_message_background.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <corners android:radius="30dp" />
+    <gradient
+        android:centerX="50%"
+        android:centerY="50%"
+        android:endColor="#82f7f9ff"
+        android:startColor="#820077ff"
+        android:angle="45"
+        android:type="linear" />
+    <padding
+        android:bottom="5dp"
+        android:left="10dp"
+        android:right="15dp"
+        android:top="5dp" />
+    <stroke
+        android:width="2dp"
+        android:color="#7826adbc" />
+</shape>