check-battery-charge.java

package net.panayiotisgeorgiou.androidjavascript;

import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private BatteryManager battery;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        Intent batteryStatus = registerReceiver(null, ifilter);
        int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
        // Find the charge Source
        boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING
                || status == BatteryManager.BATTERY_STATUS_FULL;
        int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
        boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
        boolean acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
        if (usbCharge) {
            Toast.makeText(getApplicationContext(),
                    "Mobile is charging on USB", Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(getApplicationContext(),
                    "Mobile is charging on AC", Toast.LENGTH_LONG).show();
        }

    }

}