Question

如何以编程方式监控Android设备上的电池电量？我已经阅读了stackoverflow上发布的示例和我需要注册Receiver for BatteryManager的{{1}}文档。我的问题是我需要持续监控电池电量。当我使用ACTION_BATTERY_CHANGED意图时，更新将保持恒定值，直到我退出并重新启动我的应用程序。有没有办法在我的应用运行的整个持续时间内监控电池电量？

Answer 1

尝试使用以下代码，如果您运行它，您将获得有关电池的不同信息。你还可以获得更多的信息，但是你应该在android api中为电池拍摄正确的命令。

    public void getActualData(){

    IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
    Intent batteryStatus = this.registerReceiver(null, ifilter);

    //are we charging / charged?
    int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
    boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;

    if(isCharging == true){
        tvCharged.setText("CHARGING");
    }else{
        tvCharged.setText("NOT CHARGING");
    }

    //how are we charging
    int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
    boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
    boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;

    if(usbCharge == true){
        tvHowCharging.setText("USB");
    }else{
        tvHowCharging.setText("ELECTRICAL OUTLET");
    }

    //get battery level and print it out
    int level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
    tvLevelOutput.setText(level + " / 100");
    pbLevel.setProgress(level);
    pbLevel.invalidate();

    //get battery temperatur
    int temp = batteryStatus.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, -1);
    tvTempOutput.setText(temp + "Grad");
    pbTemp.incrementProgressBy(temp);
    pbTemp.invalidate();

    //get battery voltage
    int voltage = batteryStatus.getIntExtra(BatteryManager.EXTRA_VOLTAGE, -1);
    tvVoltageOutput.setText(voltage + " V");
    pbVoltage.incrementProgressBy(voltage);
    pbVoltage.invalidate();
}

在Android手机上监控电池电量

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