Make BatterySettings Asynchronous and use enhanced estimate

this CL changes BatteryInfo methods to all use the async style callback approach it had for one of the methods. Non-async methods are now annotated to only be used in worker threads. BatteryInfo can now be obtained via callback by calling one of the async methods. Alternatively if there is a worker thread available the synchronous methods similar to the old ones can be used. The callback methods have all been changed so that they cascade to a async method that takes all the required info as paremeters. This will minimize the amount of churn in files that currently use BatteryInfo. A new loader was created that can be used to get BatteryInfo in places that wish to get it. This loader is used in PowerUsageSummary to get the BatteryInfo. Test: Robotests Bug: 38399275 Bug: 38398949 Bug: 38399654 Change-Id: Ic5a82d8ca4c85fad1b883226327ec083badf861d
2017-05-30 11:18:09 -07:00
parent 31d5b3de6f
commit 9cfa7720f4
9 changed files with 237 additions and 191 deletions
--- a/src/com/android/settings/fuelgauge/BatteryInfoLoader.java
+++ b/src/com/android/settings/fuelgauge/BatteryInfoLoader.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 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;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.BatteryStats;
+import android.os.SystemClock;
+import com.android.internal.os.BatteryStatsHelper;
+import com.android.settings.overlay.FeatureFactory;
+import com.android.settings.utils.AsyncLoader;
+
+/**
+ * Loader that can be used by classes to load BatteryInfo in a background thread. This loader will
+ * automatically grab enhanced battery estimates if available or fall back to the system estimate
+ * when not available.
+ */
+public class BatteryInfoLoader extends AsyncLoader<BatteryInfo>{
+    BatteryStatsHelper mStatsHelper;
+
+    public BatteryInfoLoader(Context context, BatteryStatsHelper batteryStatsHelper) {
+        super(context);
+        mStatsHelper = batteryStatsHelper;
+    }
+
+    @Override
+    protected void onDiscardResult(BatteryInfo result) {
+
+    }
+
+    @Override
+    public BatteryInfo loadInBackground() {
+        Context context = getContext();
+        PowerUsageFeatureProvider powerUsageFeatureProvider =
+                FeatureFactory.getFactory(context).getPowerUsageFeatureProvider(context);
+
+        // Stuff we always need to get BatteryInfo
+        BatteryUtils batteryUtils = BatteryUtils.getInstance(context);
+        Intent batteryBroadcast = getContext().registerReceiver(null,
+                new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
+        final long elapsedRealtimeUs = batteryUtils.convertMsToUs(SystemClock.elapsedRealtime());
+        BatteryInfo batteryInfo;
+
+        // Get enhanced prediction if available, otherwise use the old prediction code
+        Cursor cursor = null;
+        if (powerUsageFeatureProvider.isEnhancedBatteryPredictionEnabled(context)) {
+            final Uri queryUri = powerUsageFeatureProvider.getEnhancedBatteryPredictionUri();
+            cursor = context.getContentResolver().query(queryUri, null, null, null, null);
+        }
+        if (cursor != null && cursor.moveToFirst()) {
+            long enhancedEstimate = powerUsageFeatureProvider.getTimeRemainingEstimate(cursor);
+            batteryInfo = BatteryInfo.getBatteryInfo(context, batteryBroadcast,
+                    mStatsHelper.getStats(), elapsedRealtimeUs, false /* shortString */,
+                    batteryUtils.convertMsToUs(enhancedEstimate), true /* basedOnUsage */);
+        } else {
+            BatteryStats stats = mStatsHelper.getStats();
+            batteryInfo = BatteryInfo.getBatteryInfo(context, batteryBroadcast, stats,
+                    elapsedRealtimeUs, false /* shortString */,
+                    stats.computeBatteryTimeRemaining(elapsedRealtimeUs), false /* basedOnUsage */);
+        }
+
+        return batteryInfo;
+    }
+}