| /* |
| * 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.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.PowerManager; |
| |
| import androidx.annotation.IntDef; |
| import androidx.annotation.VisibleForTesting; |
| |
| import com.android.settings.Utils; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| |
| /** |
| * Use this broadcastReceiver to listen to the battery change, and it will invoke |
| * {@link OnBatteryChangedListener} if any of the following has been changed: |
| * |
| * 1. Battery level(e.g. 100%->99%) |
| * 2. Battery status(e.g. plugged->unplugged) |
| * 3. Battery saver(e.g. off->on) |
| */ |
| public class BatteryBroadcastReceiver extends BroadcastReceiver { |
| |
| /** |
| * Callback when the following has been changed: |
| * |
| * Battery level(e.g. 100%->99%) |
| * Battery status(e.g. plugged->unplugged) |
| * Battery saver(e.g. off->on) |
| */ |
| public interface OnBatteryChangedListener { |
| void onBatteryChanged(@BatteryUpdateType int type); |
| } |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef({BatteryUpdateType.MANUAL, |
| BatteryUpdateType.BATTERY_LEVEL, |
| BatteryUpdateType.BATTERY_SAVER, |
| BatteryUpdateType.BATTERY_STATUS}) |
| public @interface BatteryUpdateType { |
| int MANUAL = 0; |
| int BATTERY_LEVEL = 1; |
| int BATTERY_SAVER = 2; |
| int BATTERY_STATUS = 3; |
| } |
| |
| @VisibleForTesting |
| String mBatteryLevel; |
| @VisibleForTesting |
| String mBatteryStatus; |
| private OnBatteryChangedListener mBatteryListener; |
| private Context mContext; |
| |
| public BatteryBroadcastReceiver(Context context) { |
| mContext = context; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| updateBatteryStatus(intent, false /* forceUpdate */); |
| } |
| |
| public void setBatteryChangedListener(OnBatteryChangedListener lsn) { |
| mBatteryListener = lsn; |
| } |
| |
| public void register() { |
| final IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED); |
| intentFilter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); |
| |
| final Intent intent = mContext.registerReceiver(this, intentFilter); |
| updateBatteryStatus(intent, true /* forceUpdate */); |
| } |
| |
| public void unRegister() { |
| mContext.unregisterReceiver(this); |
| } |
| |
| private void updateBatteryStatus(Intent intent, boolean forceUpdate) { |
| if (intent != null && mBatteryListener != null) { |
| if (Intent.ACTION_BATTERY_CHANGED.equals(intent.getAction())) { |
| final String batteryLevel = Utils.getBatteryPercentage(intent); |
| final String batteryStatus = Utils.getBatteryStatus( |
| mContext.getResources(), intent); |
| if (forceUpdate) { |
| mBatteryListener.onBatteryChanged(BatteryUpdateType.MANUAL); |
| } else if(!batteryLevel.equals(mBatteryLevel)) { |
| mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_LEVEL); |
| } else if (!batteryStatus.equals(mBatteryStatus)) { |
| mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_STATUS); |
| } |
| mBatteryLevel = batteryLevel; |
| mBatteryStatus = batteryStatus; |
| } else if (PowerManager.ACTION_POWER_SAVE_MODE_CHANGED.equals(intent.getAction())) { |
| mBatteryListener.onBatteryChanged(BatteryUpdateType.BATTERY_SAVER); |
| } |
| } |
| } |
| |
| } |