Android Open Source - WeatherBar Battery Level

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License

The source code is released under:

MIT License

Java Source Code

package com.cjbarker.wb.receiver;
/* w w  w.  j  a  v  a 2s .c  o  m*/
import com.cjbarker.wb.Prefs;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.BatteryManager;
import android.util.Log;

public class BatteryLevel extends BroadcastReceiver {
  
  private static final String TAG = "BatteryLevel";
  
  private boolean isBatteryLow;
  private boolean isCharging;
  private boolean usbCharge;
  private boolean acCharge;

  @Override
  public void onReceive(Context ctx, Intent intent) {
    Log.i(TAG, "Intent received: " + intent.getAction());
    
    if (intent.getAction().equals(Intent.ACTION_BATTERY_OKAY) ||
      intent.getAction().equals(Intent.ACTION_BATTERY_LOW) ) {
      this.getBatteryState(intent);
    }
    else {
      this.getChargingState(intent);
    }
    
    Prefs.getInstance().setBatteryOkay(isBatteryOkay());
  }
  
  /**
   * Denotes if battery power is low via Android broadcast
   * @return  True if battery is low 
   */
  public boolean isBatteryLow() {
    return isBatteryLow;
  }
  
  /**
   * Okay to run/use application b/c battery is okay.
   * Meaning that it has a full charge, is charing, or in okay state via Android.
   * 
   * @return  True if battery is okay else false
   */
  public boolean isBatteryOkay() {
    return (isBatteryLow == false || isCharging || usbCharge || acCharge);
  }
  
  /**
   * Handles battery power intent for determining the charge state
   * 
   * @param intent  Broadcast Intent
   */
  private void getChargingState(Intent intent) {
    if (intent == null) {
      return;
    }
    Log.d(TAG, "Loading charging state...");
    int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
        isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING ||
                            status == BatteryManager.BATTERY_STATUS_FULL;
        int chargePlug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
        usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
        acCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
  }
  
  /**
   * Handles battery state intent 
   * 
   * @param intent  Broadcast Intent
   */
  private void getBatteryState(Intent intent) {
    if (intent == null) {
      return;
    }
    Log.d(TAG, "Loading battery state...");
    isBatteryLow = (intent.getAction().equals(Intent.ACTION_BATTERY_LOW) ? true : false);
  }
}

Java Source Code List

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