Android cannot resolve symbol: Context.BATTERY_SERVICE

Question

for an App I need to monitor the Average battery current in micro amperes. I did it like described here: https://source.android.com/devices/tech/power/index.html#device-power

private long getPowerConsumption() {
    BatteryManager mBatteryManager;
    mBatteryManager = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);
    long energy = mBatteryManager.getLongProperty(BatteryManager.BATTERY_PROPERTY_ENERGY_COUNTER);
    return energy;
}

But I'm getting a "Cannot resolve symbol BATTERY_SERVICE".

The context is a reference to an Activity.

What I'm doing wrong?

it looks like this was added in API 21 - make sure your project's tartgetSDK level is at least 21 — EJK, May 07 '15 at 12:57
Are you sure the problem is not somewhere else in your code? The BATTERY_SERVICE in Context is public and static. It's possible that your IDE can't find it because there is another error in your code. — se_bastiaan, May 07 '15 at 12:59

score 1 · Accepted Answer · answered May 07 '15 at 12:57

1

BATTERY_SERVICE was added in API Level 21. Set your compileSdkVersion to 21, and ensure that you only go through this code on API Level 21+ devices.

answered May 07 '15 at 12:57

CommonsWare

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and how to establish that for android before 21? – Diaa Saada Jun 21 '18 at 12:11
@DiaaSaada: Sorry, but I do not understand your question. – CommonsWare Jun 21 '18 at 20:25
Sorry. I meant what if my app should support android 19, what should I do can u point me to a reference. – Diaa Saada Jun 22 '18 at 06:40
@DiaaSaada: AFAIK, you do not have access to this information on API Level 19. – CommonsWare Jun 22 '18 at 10:37

Android cannot resolve symbol: Context.BATTERY_SERVICE

1 Answers1