Move battery usage files to a separate folder.

Bug: 202118250
Test: presubmit
Change-Id: I21aa58ebc02327849ed2161dbbafcdc806c007f2

src/com/android/settings/fuelgauge/batteryusage/BatteryUsageStatsLoader.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.fuelgauge.batteryusage;
+
+import android.content.Context;
+import android.os.BatteryStatsManager;
+import android.os.BatteryUsageStats;
+import android.os.BatteryUsageStatsQuery;
+import android.util.Log;
+
+import com.android.settingslib.utils.AsyncLoaderCompat;
+
+/**
+ * Loader to get new {@link BatteryUsageStats} in the background
+ */
+public class BatteryUsageStatsLoader extends AsyncLoaderCompat<BatteryUsageStats> {
+    private static final String TAG = "BatteryUsageStatsLoader";
+    private final BatteryStatsManager mBatteryStatsManager;
+    private final boolean mIncludeBatteryHistory;
+
+    public BatteryUsageStatsLoader(Context context, boolean includeBatteryHistory) {
+        super(context);
+        mBatteryStatsManager = context.getSystemService(BatteryStatsManager.class);
+        mIncludeBatteryHistory = includeBatteryHistory;
+    }
+
+    @Override
+    public BatteryUsageStats loadInBackground() {
+        final BatteryUsageStatsQuery.Builder builder = new BatteryUsageStatsQuery.Builder();
+        if (mIncludeBatteryHistory) {
+            builder.includeBatteryHistory();
+        }
+        try {
+            return mBatteryStatsManager.getBatteryUsageStats(builder.build());
+        } catch (RuntimeException e) {
+            Log.e(TAG, "loadInBackground() for getBatteryUsageStats()", e);
+            // Use default BatteryUsageStats.
+            return new BatteryUsageStats.Builder(new String[0]).build();
+        }
+    }
+
+    @Override
+    protected void onDiscardResult(BatteryUsageStats result) {
+    }
+}