Android Open Source - smsproxy Battery Level Observer

• Back to App/code  ↑

From Project

Back to project page smsproxy.

License

The source code is released under:

Copyright (c) 2012 Kei Nakazawa Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Softw...

Java Source Code

package jp.muo.smsproxy;
//from w  ww .j a v  a  2  s  . co  m
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.BatteryManager;
import android.util.Log;

public class BatteryLevelObserver extends BroadcastReceiver {
  private static final String BATTERY_PREFS_KEY = "bat_level";
  private static final String PREFS_IS_OKAY = "is_okay";
  private static final int BAT_LOW = 15;
  private static final int BAT_OKAY = 20;

  @Override
  public void onReceive(Context context, Intent intent) {
    final String action = intent.getAction();
    if (action.equals(Intent.ACTION_BATTERY_LOW)) {
      BatteryLevelObserver.updateStatus(context);
    } else if (action.equals(Intent.ACTION_BATTERY_OKAY)) {
      BatteryLevelObserver.updateStatus(context);
    }
  }

  public static void updateStatus(Context context) {
    BroadcastReceiver batReceiver = new BroadcastReceiver() {
      @Override
      public void onReceive(Context context, Intent intent) {
        context.getApplicationContext().unregisterReceiver(this);
        SharedPreferences prefs = context.getSharedPreferences(BATTERY_PREFS_KEY, Context.MODE_PRIVATE);
        int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
        boolean isLowerTrigger = level <= BAT_LOW;
        boolean isOkayTrigger = level >= BAT_OKAY;
        intent.getIntExtra(BatteryManager.EXTRA_STATUS, 0);
        boolean isPlugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
        boolean isOkayInPrefs = prefs.getBoolean(PREFS_IS_OKAY, true);
        boolean isBatteryLevelOkay = isOkayInPrefs;
        SharedPreferences.Editor editor = prefs.edit();
        if (isOkayInPrefs) {
          if (isLowerTrigger && !isPlugged) {
            SmsProxyManager mgr = new SmsProxyManager(context);
            Log.d(SmsProxyManager.TAG, String.format(
                "sending battery level notification(level: %d%%, isPlugged: %s", level,
                isPlugged ? "true" : "false"));
            mgr.send(SmsProxyManager.Mode.BATTERY, context.getString(R.string.sms_bat));
            isBatteryLevelOkay = false;
          }
        } else {
          if (isOkayTrigger) {
            isBatteryLevelOkay = true;
          }
        }
        Log.d(SmsProxyManager.TAG,
            String.format("isBatteryLevelOkay: %s", isBatteryLevelOkay ? "true" : "false"));
        if (isOkayInPrefs != isBatteryLevelOkay) {
          editor.putBoolean(PREFS_IS_OKAY, isBatteryLevelOkay);
          editor.commit();
        }
      }
    };
    context.getApplicationContext().registerReceiver(batReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
  }
}

Java Source Code List

• Back to App/code  ↑