Merge "Update the VisibilityLoggerMixin and add a new enum"

core/proto/android/app/settings_enums.proto

@@ -693,6 +693,12 @@ enum Action {
     // CATEGORY: SETTINGS
     // OS: R
     ACTION_CONTROLLER_UPDATE_STATE = 1728;
+
+    // Custom tag to evaluate the consuming time from onAttach to
+    // DashboardFragment.updatePreferenceStates.
+    // CATEGORY: SETTINGS
+    // OS: R
+    ACTION_DASHBOARD_VISIBLE_TIME = 1729;
 }
 
 /**

packages/SettingsLib/src/com/android/settingslib/core/instrumentation/VisibilityLoggerMixin.java

@@ -75,6 +75,19 @@ public class VisibilityLoggerMixin implements LifecycleObserver, OnAttach {
         }
     }
 
+    /**
+     * Logs the elapsed time from onAttach to calling {@link #writeElapsedTimeMetric(int, String)}.
+     * @param action : The value of the Action Enums.
+     * @param key : The value of special key string.
+     */
+    public void writeElapsedTimeMetric(int action, String key) {
+        if (mMetricsFeature == null || mMetricsCategory == METRICS_CATEGORY_UNKNOWN) {
+            return;
+        }
+        final int elapse = (int) (SystemClock.elapsedRealtime() - mTimestamp);
+        mMetricsFeature.action(METRICS_CATEGORY_UNKNOWN, action, mMetricsCategory, key, elapse);
+    }
+
     /**
      * Sets source metrics category for this logger. Source is the caller that opened this UI.
      */