Android(安卓)设备电池容量和使用量的获取

1、获取 Android 设备的电池容量

电池容量的获取主要通过反射 com.android.internal.os.PowerProfile
类，调用其中的 getBatteryCapacity 方法获取。具体方法如下

/**     * 获取电池的容量     *     * @param context     * @return     */    public static double getBatteryTotal(Context context) {        if (batteryCapacity > 0) {            return batteryCapacity;        }        Object mPowerProfile;        final String POWER_PROFILE_CLASS = "com.android.internal.os.PowerProfile";        try {            mPowerProfile = Class.forName(POWER_PROFILE_CLASS).getConstructor(Context.class).newInstance(context);            batteryCapacity = (double) Class.forName(POWER_PROFILE_CLASS).getMethod("getBatteryCapacity").invoke(mPowerProfile);        } catch (Exception e) {            e.printStackTrace();        }        return batteryCapacity;    }

2、获取 Android 设备当前电池使用量

当前使用量的获取有两种方式，一种通过 Context.BATTERY_SERVICE 系统的电池服务，另一种是通过广播来获取。

1、系统服务方式

/**     * 获取当前电量百分比     *     * @param context     * @return     */    public static int getBatteryCurrent(Context context) {        int capacity = 0;        try {            BatteryManager manager = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);            capacity = manager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);//当前电量剩余百分比        } catch (Exception e) {        }        return capacity;    }

举一反三，看下系统 BatteryManager 类中其他字段值的获取

public class BatteryManager {/*     * Battery property identifiers.  These must match the values in     * frameworks/native/include/batteryservice/BatteryService.h     */    /** Battery capacity in microampere-hours, as an integer. */    /** 电池容量，单位微安时 */    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.     */     /** 电池当前电流值（微安），正值表示充电，负值表示放电 */    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.     */     /** 平均电流（微安）*/    public static final int BATTERY_PROPERTY_CURRENT_AVERAGE = 3;    /**     * Remaining battery capacity as an integer percentage of total capacity     * (with no fractional part).     */     /** 电池剩余容量，作为总容量的百分比 */    public static final int BATTERY_PROPERTY_CAPACITY = 4;    /**     * Battery remaining energy in nanowatt-hours, as a long integer.     */     /** 以纳瓦小时考量电池剩余量 */    public static final int BATTERY_PROPERTY_ENERGY_COUNTER = 5;    /**     * Battery charge status, from a BATTERY_STATUS_* value.     */     /** 电池充电状态 */    public static final int BATTERY_PROPERTY_STATUS = 6;//下面的值表示电池的充电状态public static final int BATTERY_STATUS_UNKNOWN = Constants.BATTERY_STATUS_UNKNOWN;    public static final int BATTERY_STATUS_CHARGING = Constants.BATTERY_STATUS_CHARGING;    public static final int BATTERY_STATUS_DISCHARGING = Constants.BATTERY_STATUS_DISCHARGING;    public static final int BATTERY_STATUS_NOT_CHARGING = Constants.BATTERY_STATUS_NOT_CHARGING;    public static final int BATTERY_STATUS_FULL = Constants.BATTERY_STATUS_FULL;}

2、广播方式获取

通过广播获取电池信息

/**     * 获得电池信息     *     * @return     */    public static BatteryBean getBatteryInfo(Context context) {        BatteryBean batteryBean = new BatteryBean();        try {            Intent batteryStatus = context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));            if (batteryStatus != null) {                int temperature = batteryStatus.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, -1);                int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);                int plugState = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);                int health = batteryStatus.getIntExtra(BatteryManager.EXTRA_HEALTH, -1);                boolean present = batteryStatus.getBooleanExtra(BatteryManager.EXTRA_PRESENT, false);                String technology = batteryStatus.getStringExtra(BatteryManager.EXTRA_TECHNOLOGY);                int voltage = batteryStatus.getIntExtra(BatteryManager.EXTRA_VOLTAGE, -1);                batteryBean.setStatus(batteryStatus(status));                batteryBean.setTemperature(temperature / 10);                batteryBean.setPlugState(batteryPlugged(plugState));                batteryBean.setHealth(batteryHealth(health));                batteryBean.setPresent(present);                batteryBean.setTechnology(technology);                if (voltage > 1000) {                    batteryBean.setVoltage(voltage / 1000f);                } else {                    batteryBean.setVoltage(voltage);                }                batteryBean.setPower(getBatteryTotal(context));                batteryBean.setBr(getBatteryCurrent(context));            }        } catch (Exception e) {        }        return batteryBean;    }    private static String batteryHealth(int health) {        String healthBat = Constants.UNKNOWN;        switch (health) {            case BatteryManager.BATTERY_HEALTH_COLD:                healthBat = "cold";                break;            case BatteryManager.BATTERY_HEALTH_DEAD:                healthBat = "dead";                break;            case BatteryManager.BATTERY_HEALTH_GOOD:                healthBat = "good";                break;            case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:                healthBat = "overVoltage";                break;            case BatteryManager.BATTERY_HEALTH_OVERHEAT:                healthBat = "overheat";                break;            case BatteryManager.BATTERY_HEALTH_UNKNOWN:                healthBat = "unknown";                break;            case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:                healthBat = "unspecified";                break;        }        return healthBat;    }    private static String batteryStatus(int status) {        String healthBat = Constants.UNKNOWN;        switch (status) {            case BatteryManager.BATTERY_STATUS_CHARGING:                healthBat = "charging";                break;            case BatteryManager.BATTERY_STATUS_DISCHARGING:                healthBat = "disCharging";                break;            case BatteryManager.BATTERY_STATUS_FULL:                healthBat = "full";                break;            case BatteryManager.BATTERY_STATUS_NOT_CHARGING:                healthBat = "notCharging";                break;            case BatteryManager.BATTERY_STATUS_UNKNOWN:                healthBat = "unknown";                break;        }        return healthBat;    }    private static String batteryPlugged(int status) {        String healthBat = Constants.UNKNOWN;        switch (status) {            case BatteryManager.BATTERY_PLUGGED_AC:                healthBat = "ac";                break;            case BatteryManager.BATTERY_PLUGGED_USB:                healthBat = "usb";                break;            case BatteryManager.BATTERY_PLUGGED_WIRELESS:                healthBat = "wireless";                break;        }        return healthBat;    }

1、获取 Android 设备的电池容量

2、获取 Android 设备当前电池使用量

1、系统服务方式

2、广播方式获取

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