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privatebooleanisCharging() {
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) {
returntrue;
} else {
returnfalse;
}
}
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: falseMax charging current: 0Max 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.
*/publicclassBatteryManager {/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* integer containing the current status constant.
*/publicstaticfinal String EXTRA_STATUS = "status";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* integer containing the current health constant.
*/publicstaticfinal String EXTRA_HEALTH = "health";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* boolean indicating whether a battery is present.
*/publicstaticfinal 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}.
*/publicstaticfinal String EXTRA_LEVEL = "level";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* integer containing the maximum battery level.
*/publicstaticfinal 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.
*/publicstaticfinal 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.
*/publicstaticfinal String EXTRA_PLUGGED = "plugged";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* integer containing the current battery voltage level.
*/publicstaticfinal String EXTRA_VOLTAGE = "voltage";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* integer containing the current battery temperature.
*/publicstaticfinal String EXTRA_TEMPERATURE = "temperature";
/**
* Extra for {@link android.content.Intent#ACTION_BATTERY_CHANGED}:
* String describing the technology of the current battery.
*/publicstaticfinal 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}
*/publicstaticfinal 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}
*/publicstaticfinal 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}
*/publicstaticfinal 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}
*/publicstaticfinal String EXTRA_CHARGE_COUNTER = "charge_counter";
// values for "status" field in the ACTION_BATTERY_CHANGED Intentpublicstaticfinalint BATTERY_STATUS_UNKNOWN = 1;
publicstaticfinalint BATTERY_STATUS_CHARGING = 2;
publicstaticfinalint BATTERY_STATUS_DISCHARGING = 3;
publicstaticfinalint BATTERY_STATUS_NOT_CHARGING = 4;
publicstaticfinalint BATTERY_STATUS_FULL = 5;
// values for "health" field in the ACTION_BATTERY_CHANGED Intentpublicstaticfinalint BATTERY_HEALTH_UNKNOWN = 1;
publicstaticfinalint BATTERY_HEALTH_GOOD = 2;
publicstaticfinalint BATTERY_HEALTH_OVERHEAT = 3;
publicstaticfinalint BATTERY_HEALTH_DEAD = 4;
publicstaticfinalint BATTERY_HEALTH_OVER_VOLTAGE = 5;
publicstaticfinalint BATTERY_HEALTH_UNSPECIFIED_FAILURE = 6;
publicstaticfinalint 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. */publicstaticfinalint BATTERY_PLUGGED_AC = 1;
/** Power source is a USB port. */publicstaticfinalint BATTERY_PLUGGED_USB = 2;
/** Power source is wireless. */publicstaticfinalint BATTERY_PLUGGED_WIRELESS = 4;
/** @hide */publicstaticfinalint 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()}.
*/publicstaticfinal 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()}.
*/publicstaticfinal 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. */publicstaticfinalint 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.
*/publicstaticfinalint 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.
*/publicstaticfinalint BATTERY_PROPERTY_CURRENT_AVERAGE = 3;
/**
* Remaining battery capacity as an integer percentage of total capacity
* (with no fractional part).
*/publicstaticfinalint BATTERY_PROPERTY_CAPACITY = 4;
/**
* Battery remaining energy in nanowatt-hours, as a long integer.
*/publicstaticfinalint BATTERY_PROPERTY_ENERGY_COUNTER = 5;
privatefinal IBatteryStats mBatteryStats;
privatefinal IBatteryPropertiesRegistrar mBatteryPropertiesRegistrar;
/**
* @removed Was previously made visible by accident.
*/publicBatteryManager() {
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}.
*/publicbooleanisCharging() {
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.
*/privatelongqueryProperty(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.
*/publicintgetIntProperty(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.
*/publiclonggetLongProperty(int id) {
return queryProperty(id);
}
}
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