Add debug logs for updateBatteryStatus and TopLevelBatteryPreferenceController updating.

Bug: 271665638
Test: make RunSettingsRoboTests ROBOTEST_FILTER="com.android.settings.fuelgauge"
Change-Id: I1c9cc3cfcb54051223df2ad46947d7f0c1ebbdb0

src/com/android/settings/fuelgauge/BatteryBroadcastReceiver.java

@@ -116,12 +116,21 @@ public class BatteryBroadcastReceiver extends BroadcastReceiver {
             return;
         }
         final String action = intent.getAction();
+        Log.d(TAG, "updateBatteryStatus: action=" + action);
         if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
             final String batteryLevel = Utils.getBatteryPercentage(intent);
             final String batteryStatus =
                     Utils.getBatteryStatus(mContext, intent, /* compactStatus= */ false);
             final int batteryHealth = intent.getIntExtra(
                     BatteryManager.EXTRA_HEALTH, BatteryManager.BATTERY_HEALTH_UNKNOWN);
+            Log.d(
+                    TAG,
+                    "Battery changed: level="
+                            + batteryLevel
+                            + ", status="
+                            + batteryStatus
+                            + ", health="
+                            + batteryHealth);
             if (!Utils.isBatteryPresent(intent)) {
                 Log.w(TAG, "Problem reading the battery meter.");
                 mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_NOT_PRESENT);

src/com/android/settings/fuelgauge/TopLevelBatteryPreferenceController.java

@@ -18,6 +18,7 @@ package com.android.settings.fuelgauge;
 
 import android.content.ComponentName;
 import android.content.Context;
+import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
@@ -34,6 +35,8 @@ import com.android.settingslib.utils.ThreadUtils;
 public class TopLevelBatteryPreferenceController extends BasePreferenceController implements
         LifecycleObserver, OnStart, OnStop, BatteryPreferenceController {
 
+    private static final String TAG = "TopLvBatteryPrefControl";
+
     @VisibleForTesting
     protected boolean mIsBatteryPresent = true;
     @VisibleForTesting
@@ -47,6 +50,7 @@ public class TopLevelBatteryPreferenceController extends BasePreferenceControlle
         super(context, preferenceKey);
         mBatteryBroadcastReceiver = new BatteryBroadcastReceiver(mContext);
         mBatteryBroadcastReceiver.setBatteryChangedListener(type -> {
+            Log.d(TAG, "onBatteryChanged: type=" + type);
             if (type == BatteryBroadcastReceiver.BatteryUpdateType.BATTERY_NOT_PRESENT) {
                 mIsBatteryPresent = false;
             }
@@ -101,6 +105,8 @@ public class TopLevelBatteryPreferenceController extends BasePreferenceControlle
             return null;
         }
 
+        Log.d(TAG, "getDashboardLabel: batteryStatusUpdate=" + batteryStatusUpdate);
+
         if (batteryStatusUpdate) {
             setSummaryAsync(info);
         }
@@ -137,6 +143,7 @@ public class TopLevelBatteryPreferenceController extends BasePreferenceControlle
     /**
      * Callback which receives text for the label.
      */
+    @Override
     public void updateBatteryStatus(String label, BatteryInfo info) {
         mBatteryStatusLabel = label; // Null if adaptive charging is not active