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/*
* 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.os.BatteryProperty;
import android.os.IBatteryPropertiesRegistrar;
import android.os.RemoteException;
import android.os.ServiceManager;
/**
* 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";
// 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;
private IBatteryPropertiesRegistrar mBatteryPropertiesRegistrar;
/**
* Return the requested battery property.
*
* @param id identifier from {@link BatteryProperty} of the requested property
* @return a {@link BatteryProperty} object that returns the property value, or null on error
*/
public BatteryProperty getProperty(int id) throws RemoteException {
if (mBatteryPropertiesRegistrar == null) {
IBinder b = ServiceManager.getService("batteryproperties");
mBatteryPropertiesRegistrar =
IBatteryPropertiesRegistrar.Stub.asInterface(b);
if (mBatteryPropertiesRegistrar == null)
return null;
}
BatteryProperty prop = new BatteryProperty();
if ((mBatteryPropertiesRegistrar.getProperty(id, prop) == 0) &&
(prop.getLong() != Long.MIN_VALUE))
return prop;
else
return null;
}
}
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