BATTERY_PROPERTY_CURRENT_NOW not working on every device. What are alternatives?

Question

My app uses BatteryManager.BATTERY_PROPERTY_CURRENT_NOW to get the battery current of the device:

BatteryManager batteryManager = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);
int current = batteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CURRENT_NOW), context);

However, it does not work for example on a Samsung Galaxy Tab A. There it returns just 0.

Other apps show the current even on that device. How do they do it? What are alternatives to my method?

have you tried something like this [get-battery-level-and-state-in-android](https://stackoverflow.com/questions/3291655/get-battery-level-and-state-in-android) — James Glasgow, Apr 22 '19 at 10:33
Possible duplicate of [Getting the battery current values for the Android Phone](https://stackoverflow.com/questions/2439619/getting-the-battery-current-values-for-the-android-phone). — Martin Zeitler, Apr 25 '19 at 11:34

score 1 · Accepted Answer · answered Apr 25 '19 at 11:55

1

From your question ("returns just 0") please take a look at the documentation on getIntProperty: https://developer.android.com/reference/android/os/BatteryManager#getIntProperty(int)

If the property is not supported or there is any other error, return

(a) 0 if targetSdkVersion < VERSION_CODES.P

or

(b) Integer.MIN_VALUE if targetSdkVersion >= VERSION_CODES.P.

answered Apr 25 '19 at 11:55

Konrad Lang

633
6
9

So, it is just not supported on some devices… That explains it at least. – P1xelfehler Aug 05 '20 at 13:58

score -1 · Answer 2 · answered Apr 25 '19 at 12:22

Use this method:

int getBatteryPercent(Context context) {
    Intent intent = context.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
    if (intent != null) {
        int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
        int scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
        return level * 100 / scale;
    }
    return 0;
}

score -3 · Answer 3 · edited Apr 25 '19 at 11:44

-3

Try this :

BatteryManager batteryManager = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);

    int current = batteryManager.getIntProperty(BatteryManager.EXTRA_LEVEL), context)

edited Apr 25 '19 at 11:44

DINA TAKLIT

7,074
10
69
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answered Apr 25 '19 at 10:51

mit

34
3

where's the difference, beside the introduced syntax errors? – Martin Zeitler Apr 25 '19 at 11:35

BATTERY_PROPERTY_CURRENT_NOW not working on every device. What are alternatives?

3 Answers3