android 电池与电量

这篇文章主要记录在开发过程中，遇到关于电池相关知识的记录。

1.判断当前手机状态（充电？AC充电？USB充电？）

//判断手机是否在充电    private boolean isCharging() {        IntentFilter intentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);        Intent batteryStatusIntent = registerReceiver(null, intentFilter);        //获取当前电池状态        int status = batteryStatusIntent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);         boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||                status == BatteryManager.BATTERY_STATUS_FULL;        return isCharging;    }//判断手机在用什么方式充电int chargePlug = batteryStatusIntent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;

2.判断手机是否处于低电量模式

    private boolean isLowBattery() {        IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);        Intent batteryStatusIntent = registerReceiver(null, ifilter);        int level = batteryStatusIntent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);        int lowBatterLevel = mContext.getResources().getInteger(                com.android.internal.R.integer.config_lowBatteryWarningLevel);        if (level < lowBatterLevel) {            return true;        } else {            return false;        }    }

3.adb命令更改电池信息，方便调试

 在终端中输入：adb shell dumpsys battery 会输出如下关于电池的信息：Current Battery Service state:  (UPDATES STOPPED -- use 'reset' to restart)  AC powered: false  USB powered: false  Wireless powered: false  Max charging current: 0  Max charging voltage: 0  Charge counter: 0  status: 1  health: 2  present: true  level: 1  scale: 100  voltage: 4354  temperature: 270  technology: Li-ion

认真的人会发现，我的手机 信息如下：
AC powered: false
USB powered: false
是因为我使用了如下命令

  adb shell dumpsys battery unplug

该命令模拟手机没有插USB线，方便进行调试。

还可以使用如下命令进行设置电池信息

//设置电池电量值adb shell dumpsys battery set level 【数字1-100】adb shell dumpsys battery set status 【0,1,2】

还有一些内容，需要的话可以自己去摸索一下，我平时用的就是这几个。

关于更多的电池信息，可以查看

frameworks/base/core/java/android/os/BatteryManager.java/* * Copyright (C) 2008 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 android.os;import android.content.Context;import android.os.BatteryProperty;import android.os.IBatteryPropertiesRegistrar;import android.os.RemoteException;import android.os.ServiceManager;import com.android.internal.app.IBatteryStats;/** * The BatteryManager class contains strings and constants used for values * in the {@link android.content.Intent#ACTION_BATTERY_CHANGED} Intent, and * provides a method for querying battery and charging properties. */public class BatteryManager {    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the current status constant.     */    public static final String EXTRA_STATUS = "status";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the current health constant.     */    public static final String EXTRA_HEALTH = "health";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * boolean indicating whether a battery is present.     */    public static final String EXTRA_PRESENT = "present";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer field containing the current battery level, from 0 to     * {@link #EXTRA_SCALE}.     */    public static final String EXTRA_LEVEL = "level";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the maximum battery level.     */    public static final String EXTRA_SCALE = "scale";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the resource ID of a small status bar icon     * indicating the current battery state.     */    public static final String EXTRA_ICON_SMALL = "icon-small";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer indicating whether the device is plugged in to a power     * source; 0 means it is on battery, other constants are different     * types of power sources.     */    public static final String EXTRA_PLUGGED = "plugged";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the current battery voltage level.     */    public static final String EXTRA_VOLTAGE = "voltage";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the current battery temperature.     */    public static final String EXTRA_TEMPERATURE = "temperature";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * String describing the technology of the current battery.     */    public static final String EXTRA_TECHNOLOGY = "technology";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * Int value set to nonzero if an unsupported charger is attached     * to the device.     * {@hide}     */    public static final String EXTRA_INVALID_CHARGER = "invalid_charger";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * Int value set to the maximum charging current supported by the charger in micro amperes.     * {@hide}     */    public static final String EXTRA_MAX_CHARGING_CURRENT = "max_charging_current";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * Int value set to the maximum charging voltage supported by the charger in micro volts.     * {@hide}     */    public static final String EXTRA_MAX_CHARGING_VOLTAGE = "max_charging_voltage";    /**     * Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:     * integer containing the charge counter present in the battery.     * {@hide}     */     public static final String EXTRA_CHARGE_COUNTER = "charge_counter";    // values for "status" field in the ACTION_BATTERY_CHANGED Intent    public static final int BATTERY_STATUS_UNKNOWN = 1;    public static final int BATTERY_STATUS_CHARGING = 2;    public static final int BATTERY_STATUS_DISCHARGING = 3;    public static final int BATTERY_STATUS_NOT_CHARGING = 4;    public static final int BATTERY_STATUS_FULL = 5;    // values for "health" field in the ACTION_BATTERY_CHANGED Intent    public static final int BATTERY_HEALTH_UNKNOWN = 1;    public static final int BATTERY_HEALTH_GOOD = 2;    public static final int BATTERY_HEALTH_OVERHEAT = 3;    public static final int BATTERY_HEALTH_DEAD = 4;    public static final int BATTERY_HEALTH_OVER_VOLTAGE = 5;    public static final int BATTERY_HEALTH_UNSPECIFIED_FAILURE = 6;    public static final int BATTERY_HEALTH_COLD = 7;    // values of the "plugged" field in the ACTION_BATTERY_CHANGED intent.    // These must be powers of 2.    /** Power source is an AC charger. */    public static final int BATTERY_PLUGGED_AC = 1;    /** Power source is a USB port. */    public static final int BATTERY_PLUGGED_USB = 2;    /** Power source is wireless. */    public static final int BATTERY_PLUGGED_WIRELESS = 4;    /** @hide */    public static final int BATTERY_PLUGGED_ANY =            BATTERY_PLUGGED_AC | BATTERY_PLUGGED_USB | BATTERY_PLUGGED_WIRELESS;    /**     * Sent when the device's battery has started charging (or has reached full charge     * and the device is on power).  This is a good time to do work that you would like to     * avoid doing while on battery (that is to avoid draining the user's battery due to     * things they don't care enough about).     *     * This is paired with {@link #ACTION_DISCHARGING}.  The current state can always     * be retrieved with {@link #isCharging()}.     */    public static final String ACTION_CHARGING = "android.os.action.CHARGING";    /**     * Sent when the device's battery may be discharging, so apps should avoid doing     * extraneous work that would cause it to discharge faster.     *     * This is paired with {@link #ACTION_CHARGING}.  The current state can always     * be retrieved with {@link #isCharging()}.     */    public static final String ACTION_DISCHARGING = "android.os.action.DISCHARGING";    /*     * Battery property identifiers.  These must match the values in     * frameworks/native/include/batteryservice/BatteryService.h     */    /** Battery capacity in microampere-hours, as an integer. */    public static final int BATTERY_PROPERTY_CHARGE_COUNTER = 1;    /**     * Instantaneous battery current in microamperes, as an integer.  Positive     * values indicate net current entering the battery from a charge source,     * negative values indicate net current discharging from the battery.     */    public static final int BATTERY_PROPERTY_CURRENT_NOW = 2;    /**     * Average battery current in microamperes, as an integer.  Positive     * values indicate net current entering the battery from a charge source,     * negative values indicate net current discharging from the battery.     * The time period over which the average is computed may depend on the     * fuel gauge hardware and its configuration.     */    public static final int BATTERY_PROPERTY_CURRENT_AVERAGE = 3;    /**     * Remaining battery capacity as an integer percentage of total capacity     * (with no fractional part).     */    public static final int BATTERY_PROPERTY_CAPACITY = 4;    /**     * Battery remaining energy in nanowatt-hours, as a long integer.     */    public static final int BATTERY_PROPERTY_ENERGY_COUNTER = 5;    private final IBatteryStats mBatteryStats;    private final IBatteryPropertiesRegistrar mBatteryPropertiesRegistrar;    /**     * @removed Was previously made visible by accident.     */    public BatteryManager() {        mBatteryStats = IBatteryStats.Stub.asInterface(                ServiceManager.getService(BatteryStats.SERVICE_NAME));        mBatteryPropertiesRegistrar = IBatteryPropertiesRegistrar.Stub.asInterface(                ServiceManager.getService("batteryproperties"));    }    /**     * Return true if the battery is currently considered to be charging.  This means that     * the device is plugged in and is supplying sufficient power that the battery level is     * going up (or the battery is fully charged).  Changes in this state are matched by     * broadcasts of {@link #ACTION_CHARGING} and {@link #ACTION_DISCHARGING}.     */    public boolean isCharging() {        try {            return mBatteryStats.isCharging();        } catch (RemoteException e) {            throw e.rethrowFromSystemServer();        }    }    /**     * Query a battery property from the batteryproperties service.     *     * Returns the requested value, or Long.MIN_VALUE if property not     * supported on this system or on other error.     */    private long queryProperty(int id) {        long ret;        if (mBatteryPropertiesRegistrar == null) {            return Long.MIN_VALUE;        }        try {            BatteryProperty prop = new BatteryProperty();            if (mBatteryPropertiesRegistrar.getProperty(id, prop) == 0)                ret = prop.getLong();            else                ret = Long.MIN_VALUE;        } catch (RemoteException e) {            throw e.rethrowFromSystemServer();        }        return ret;    }    /**     * Return the value of a battery property of integer type.  If the     * platform does not provide the property queried, this value will     * be Integer.MIN_VALUE.     *     * @param id identifier of the requested property     *     * @return the property value, or Integer.MIN_VALUE if not supported.     */    public int getIntProperty(int id) {        return (int)queryProperty(id);    }    /**     * Return the value of a battery property of long type If the     * platform does not provide the property queried, this value will     * be Long.MIN_VALUE.     *     * @param id identifier of the requested property     *     * @return the property value, or Long.MIN_VALUE if not supported.     */    public long getLongProperty(int id) {        return queryProperty(id);    }}