当我检查检查按钮时，在通知栏上显示电池电量

Question

我想在通知栏中显示电池电量（如：50％）。按下复选框时我想要它，因为我想决定是否显示它。无论如何，我将此代码用于电池级别：

    @Override
    public void onCreate() {
    BroadcastReceiver batteryReceiver = new BroadcastReceiver() {
        int level = -1;
        @Override
        public void onReceive(Context context, Intent intent) {
            level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
            Log.e("BatteryManager", "level is "+level+");
        }
    };
    IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
    registerReceiver(batteryReceiver, filter);
    }

要发布通知我发现了这个：

   NotificationManager notifi = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);

   Notification notification = new Notification(R.drawable.ic_launcher,"Testing",System.currentTimeMillis());

   notification.flags = Notification.FLAG_ONGOING_EVENT;

   Intent i = new Intent(this,KillerActivity.class); 

   PendingIntent penInt = PendingIntent.getActivity(getApplicationContext(), 0 , i , 0);

   notification.setLatestEventInfo(getApplicationContext(), "Varaha ", "Testing", penInt);

   notifi.notify(215,notification);

但是我如何将它与我的barrey级代码合并？