fix: change the screen unique id generation method (#36)

Co-authored-by: xiaoweii <[email protected]>

Author: zhu-xiaowei

clickstream/src/main/java/software/aws/solution/clickstream/client/AutoRecordEventClient.java

@@ -119,14 +119,13 @@ public void recordViewScreen(Activity activity) {
 
     /**
      * get the screen unique id for activity.
-     * the unique id calculated by appending the last 8 characters of the device id with "_" and the activity hash code.
+     * the unique id calculated by getting the activity hash code.
      *
      * @param activity the activity for holding the screen
      * @return the unique of the activity
      */
     public String getScreenUniqueId(Activity activity) {
-        String clipDeviceId = StringUtil.trimOrPadString(clickstreamContext.getDeviceId(), DEVICE_ID_CLIP_LENGTH, '_');
-        return clipDeviceId + "_" + activity.hashCode();
+        return String.valueOf(activity.hashCode());
     }
 
     /**

clickstream/src/test/java/software/aws/solution/clickstream/AutoRecordEventClientTest.java

@@ -206,6 +206,31 @@ public void testViewOneScreenEvent() throws Exception {
         }
     }
 
+    /**
+     * test screen view event with screen unique id.
+     *
+     * @throws Exception exception.
+     */
+    @Test
+    public void testScreenViewWithUniqueId() throws Exception {
+        Activity activity = mock(Activity.class);
+        Bundle bundle = mock(Bundle.class);
+        callbacks.onActivityCreated(activity, bundle);
+        callbacks.onActivityStarted(activity);
+        callbacks.onActivityResumed(activity);
+        try (Cursor cursor = dbUtil.queryAllEvents()) {
+            cursor.moveToLast();
+            String eventString = cursor.getString(2);
+            JSONObject jsonObject = new JSONObject(eventString);
+            String eventName = jsonObject.getString("event_type");
+            assertEquals(eventName, Event.PresetEvent.SCREEN_VIEW);
+            JSONObject attributes = jsonObject.getJSONObject("attributes");
+            String screenUniqueId = attributes.getString(ReservedAttribute.SCREEN_UNIQUE_ID);
+            assertNotNull(screenUniqueId);
+            assertEquals(screenUniqueId, String.valueOf(activity.hashCode()));
+        }
+    }
+
     /**
      * test close screen view events in configuration.
      *