get Battery Level - Android android.os

Android examples for android.os:Battery

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  3. android.os
  4. Battery

Description

get Battery Level

Demo Code

import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;

public class Main{

    public static float getBatteryLevel(Context context) {
        Intent batteryStatus = getBatteryStatus(context);
        if (batteryStatus != null) {
            int level = batteryStatus.getIntExtra(
                    BatteryManager.EXTRA_LEVEL, -1);
            int scale = batteryStatus.getIntExtra(
                    BatteryManager.EXTRA_SCALE, -1);
            return (level / (float) scale);
        } else {//from w  ww. j a v  a2  s. co  m
            return 0.5f;
        }
    }
    private static Intent getBatteryStatus(Context context) {
        IntentFilter filter = new IntentFilter(
                Intent.ACTION_BATTERY_CHANGED);
        return context.registerReceiver(null, filter);
    }

}

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