Android Open Source - screenstandby Notification Bar

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*******************************************************************************
 * Copyright (c) 2014 Hoang Nguyen.//  w ww  .ja v  a2s .com
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Hoang Nguyen - initial API and implementation
 ******************************************************************************/
package com.nkahoang.screenstandby;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.PixelFormat;
import android.graphics.Typeface;
import android.os.Handler;
import android.view.Display;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.TextView;

public class NotificationBar {
  private  TextView datetime;
  private  DateFormat dateFormat = new SimpleDateFormat("EEE, MMM d, y  HH:mm");
  private  TextView batteryLevel;
  private  WindowManager winMan;
  private  ViewGroup mainlayout;
  private  Handler h;
   Timer timer = new Timer();
  
   void detachNotification()
  {
    if (mainlayout!=null)
    {
      winMan.removeViewImmediate(mainlayout);
      mainlayout=null;
    }
  }
  
   void attachNotification(Context context)
  {
    if (mainlayout == null)
    {
      h = new Handler();
          LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
          
          //inflater.inflate(R.layout.notificationbar, this, true);
          mainlayout = (ViewGroup)inflater.inflate(R.layout.notificationbar, mainlayout, false);
          
          Typeface typefaceLight = FontManager.getThinFont(context);
          Typeface typeface = FontManager.getCondensedFont(context);
          
          batteryLevel = (TextView)mainlayout.findViewById(R.id.txtBattery);
          batteryLevel.setTypeface(typeface);
          setBatteryLevel(context);
          
        datetime = (TextView)mainlayout.findViewById(R.id.txtDateTime);
        datetime.setTypeface(typefaceLight);
        Calendar cal = Calendar.getInstance();
        datetime.setText(dateFormat.format(cal.getTime()).toUpperCase());
        timer.schedule(new TimerTask() {
  
        @Override
        public void run() {
          // TODO Auto-generated method stub
          h.post(new Runnable() {
            @Override
            public void run() {
                Calendar cal = Calendar.getInstance();
                datetime.setText(dateFormat.format(cal.getTime()).toUpperCase());
            }});
        }}, 0, 10000);
  
      winMan = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
      WindowManager.LayoutParams 
      
      paramsfilter = new WindowManager.LayoutParams(
                  WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
                  WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_INSET_DECOR,
                  WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
                  WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                  PixelFormat.RGBA_8888);
      
      Display display = winMan.getDefaultDisplay();
        paramsfilter.width = display.getWidth();
        paramsfilter.height = (int)Math.ceil(25 * context.getResources().getDisplayMetrics().density);
            paramsfilter.y -= paramsfilter.height; 
        paramsfilter.gravity = Gravity.TOP;
        paramsfilter.setTitle("Test");
        
      winMan.addView(mainlayout, paramsfilter);
    }
  }
  
  private void setBatteryLevel(Context context) {
        BroadcastReceiver batteryLevelReceiver = new BroadcastReceiver() {
            public void onReceive(Context context, Intent intent) {
                context.unregisterReceiver(this);
                int rawlevel = intent.getIntExtra("level", -1);
                int scale = intent.getIntExtra("scale", -1);
                int level = -1;
                if (rawlevel >= 0 && scale > 0) {
                    level = (rawlevel * 100) / scale;
                }
                batteryLevel.setText(level + "%");
            }
        };
        IntentFilter batteryLevelFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        context.registerReceiver(batteryLevelReceiver, batteryLevelFilter);
    }
}
Java Source Code List
