Develop Reference

How to update my notification to show my time counter changing?

I am almost finished with this toy app game I am making.
Problem:
My notification is always showing my counter to be 30000. Why isn't it timing down?
What I have done:
I have implemented a simple Service class and a custom timer to tick down. Eventually once I am sure the timer is working I will exit the entire game.
Here is my code:
package com.example.redshirtmarblez;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.CountDownTimer;
import android.os.IBinder;
import android.widget.Toast;
public class TimingService extends Service{
public long counter = 30000;
private Context ctx;
private Activity localActivity;
private NotificationManager nm;
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate()
{
super.onCreate();
nm = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
declareNotification();
timer.start();
//Toast.makeText(this, "Timer is :" + counter, Toast.LENGTH_LONG).show();
//showNotification();
}
public void getActivity(Activity activity)
{
localActivity = activity;
}
//count to end the game
public CountDownTimer timer = new CountDownTimer(30000, 1000){
public void onTick(long millisUntilFinished){
counter = millisUntilFinished / 1000;
}
public void onFinish(){
counter = 0;
//Kill the game
int i = android.os.Process.myPid();
android.os.Process.killProcess(i);
}
};
/*
* Show a notification while this service is running
*/
public void declareNotification()
{
//Declare a new notification
Notification notification = new Notification(R.drawable.ic_launcher, "A New Notification", System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;
Intent intent = new Intent(this, TimingService.class);
PendingIntent activity = PendingIntent.getActivity(this, 0, intent, 0);
notification.setLatestEventInfo(this, "herp", "counter: " + counter, activity);
//This is clearly not 1337, but a good joke
startForeground(1337, notification);
}
}
All this does when it runs is shows "A New Notification", and then changes to "herp counter: 30000". However, this notification never changes. It just stays 30000. Why? I thought I fixed this with making the flag ongoing?

https://developer.android.com/reference/android/app/Notification.Builder.html#setUsesChronometer(boolean)
Show the when field as a stopwatch. Instead of presenting when as a
timestamp, the notification will show an automatically updating
display of the minutes and seconds since when. Useful when showing an
elapsed time (like an ongoing phone call). The counter can also be set
to count down to when when using setChronometerCountDown(boolean).
No updating required, works off the setWhen() value
NotificationCompat.Builder notification = new NotificationCompat.Builder(context)
.setSmallIcon(R.mipmap.ic_default_notification)
.setTicker("Ticker Text")
.setWhen(when) // the time stamp, you will probably use System.currentTimeMillis() for most scenarios
.setUsesChronometer(true)
.setContentTitle("Title Text")
.setContentText("Content Text");

counter is not a reference; the notification will not update with its new value until you explicitly tell it to.
Have a look at the documentation on updating an existing notification. Your ID is 1337 here, so you can use that to update it.
In fact, you may just be able to call declareNotification() again from your onTick() method... If this doesn't work, however, I would suggest keeping a reference to the Notification object (as a member variable), then updating it, and use nm.notify(1337, /* your notification object */);.

I don't know why you want to use a notification. But you need to keep updating your notification. For a simple fix add
declareNotification();
underneath this line:
counter = millisUntilFinished / 1000;
Note that this isn't a great way to code it. Really you should pass a method only updating the notification rather than "creating" a new one. However as long as they have the same ID, one will replace the other.
Also just to use a more up to date way of managing notifications, use
NotificationCompat.builder b = new NotificationCompat.Builder(context);

Screen wont dim when I tell it to

I'm trying to get my screen to go dim when I call an activity from a notification. Here is the code I am using:
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 0.01f;
getWindow().setAttributes(lp);
Maybe I am doing something wrong here, if so can someone tell me whats going on and why its not working the way its supposed to?!
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
public class NoteMe extends Activity {
/** Called when the activity is first created. */
NotificationManager nm;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String title = "Example text";
String contentText = "Full hello world!";
String text = "Starting Notification!";
nm = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
long when = System.currentTimeMillis();
int icon = R.drawable.ic_launcher;
Intent intent = new Intent(getBaseContext(), MainActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(
getBaseContext(), 0, intent, 0);
Notification notification = new Notification(icon, text, when);
notification.setLatestEventInfo(getBaseContext(), title, contentText,
contentIntent);
notification.flags = Notification.FLAG_ONGOING_EVENT;
int NOTIFICATION_ID = 10;
nm.notify(NOTIFICATION_ID, notification);
}
}
Here is the requested code

You code is 100% correct. There are two possibilities the first is the most likely
1) The activity is not getting called off the notification. I believe there is a special way that you fire off from a notification involving pending intents. I would guess thats the problem. Just to be sure put some breakpoints in onCreate and onStart to see if it ever gets called. Or just put a log statement near your code to see if it gets called. I'm guessing it never gets called.
2) The adjustment you are making 0.1f is not visible change.
Please review this and just make sure notifications are being received:
http://www.vogella.com/articles/AndroidNotifications/article.html
One difference I see is getContextBase() vs. this
If its not that it looks like maybe MainActivity.class manifest declaration might not be right.

Try something like this - refreshing the screen after you have set the attribute.
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness =0.01f
getWindow().setAttributes(lp);
startActivity(new Intent(this,RefreshScreen.class));
So one hack on refreshing the screen is starting dummy activity and than in on create of that dummy activity to call finish(); so the changes of the brightness to take an effect.

The code you posted would only dim the screen for your application. If thats what you want, thats fine. But if you want to dim the screen on the phone then you need to change the system setting System.SCREEN_BRIGHTNESS
// turn on manual control of system screen brightness
Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
final int dimBrightnessValue = 96; // valid values 0-255
// change the brightness value
System.putInt(getContentResolver(), System.SCREEN_BRIGHTNESS, dimBrightnessValue);
You would also need to add the following to the AndroidManifest.xml
<!-- Needed for changing screen brightness -->
<uses-permission android:name="android.permission.WRITE_SETTINGS" />

Android Honeycomb notification popup too frequently

I am developing for Honeycomb and for days i am trying to solve this problem.
I have an notification service without intent (don`t need one), the problem is that after every call for displaymessage function the notification pup-up each time, so i get 100 notifications. I would like it to popup only once and after that only change the text of percent. Similar to downloading from market progress bar and percentage. I have isolated the function and created new testing code but with no success. If you look at this from other angle, i wish to change the text on existing notification without creating new notification.
Can you please help me?
Here is the whole code (after the isolation):
package com.disp;
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.Context;
import android.os.Bundle;
import android.os.SystemClock;
public class DispalyActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
for (int i = 0; i < 100; i++) {
SystemClock.sleep(300);
displaymessage(""+i+"%");
}
}
public void displaymessage(String string) {
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
Notification notification = new Notification(R.drawable.ic_launcher, "Notification Service", System.currentTimeMillis());
Context context = getApplicationContext();
notification.setLatestEventInfo(context, "Downloading Content:", string, null);
final int HELLO_ID = 2;
mNotificationManager.notify(HELLO_ID, notification);
}
}

Because each notification is uniquely identified by the NotificationManager with an integer ID, you can revise the notification by calling setLatestEventInfo() with new values, change some field values of the notification, and then call notify() again.
You can revise each property with the object member fields (except for the Context and the notification title and text). You should always revise the text message when you update the notification by calling setLatestEventInfo() with new values for contentTitle and contentText. Then call notify() to update the notification. (Of course, if you've created a custom notification layout, then updating these title and text values has no effect.)
from
http://developer.android.com/guide/topics/ui/notifiers/notifications.html

Android Phonegap App - How to send notifications

Could anyone possibly offer some advice on how to setup Status bar notifications in Android?
My skillset is all based around design/front-end dev (hence using phonegap) so I'm a beginner with Eclipse.
I have read this tutorial - http://androidforbeginners.blogspot.com/2010/02/how-to-create-status-bar-notifications.html and have pasted the code into the activity area of my Android Manifest file. But I don't quite understand how it will work. If I compile this now as an APK and install it on a phone -- is it now ready to receive notifications? If so how do I send them, and where do I type the sending code?
Hopefully it's fairly simple as my boss is hoping that I'll have it completed before christmas!
Cheers for your help.
All the best
Paul

You want status bar notification? If yes...you are lucky...here's a plugin which I already created for phonegap. Look around for how to embed the external plugin in android.
https://github.com/phonegap/phonegap-plugins/tree/master/Android/StatusBarNotification

Here you can find better explanation with source codes about notifications.
Notification can be a reaction on some event. For instance, you can develop a simple application with one button. When you press this button a notification will be displayed in the status bar.
About the development. You should install Android SDK, create an emulator of the device. Also it is very useful to install Android ADT - this is a pluging for Eclipse to help to develop Android applications. After that when you build an application it will be automatically installed on the emulator.
Here is the code how to make a simple notification:
package your.package
import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class AcNotificationTestMain extends Activity implements OnClickListener {
/** Called when the activity is first created. */
private static final int SEND_ID = 1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button mBtnSend = (Button) findViewById(R.id.button1);
mBtnSend.setOnClickListener(this);
}
#Override
public void onClick(View arg0) {
Log.v("","OnClick...");
// Create an object of Notification manager
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
int icon = android.R.drawable.sym_action_email; // icon from resources
CharSequence tickerText = "New Notification"; // ticker-text
long when = System.currentTimeMillis(); // notification time
Context context = getApplicationContext(); // application Context
CharSequence contentTitle = "My notification"; // expanded message title
CharSequence contentText = "Click me!"; // expanded message text
Intent notificationIntent = new Intent(this, AcNotificationTestMain.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
// the next two lines initialize the Notification, using the configurations above
Notification notification = new Notification(icon, tickerText, when);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(SEND_ID, notification);
}
}
And layout file:
<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent">
<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="#string/hello"/>
<Button android:id="#+id/button1" android:text="#string/AcNotificationTest_BtnSendNotificationText" android:layout_width="wrap_content" android:layout_height="wrap_content"/>
</LinearLayout>

launch activity from service when notification is clicked

I know, there are tons of these on here, but I've been trying solutions all day and haven't gotten anywhere.
Neither the example on google's docs, nor any of the 5 other ways I've found on here have worked for me at all.
As is the typical case, when I click the notification it closes the status bar and nothing new is shown onscreen.
I am creating the notification from a service and need the notification to trigger a new activity that has not yet been created.
I also will need a way to pass information to that activity via intent.
And yes... this is java for Android
What follows are the shattered remnants of my code.
package com.bobbb.hwk2;
import java.io.FileOutputStream;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.IBinder;
import android.provider.ContactsContract;
import android.widget.Toast;
public class contactBackup extends Service
{
private NotificationManager nManager;
private static final int NOTIFY_ID = 1100;
#Override
public void onCreate()
{
super.onCreate();
String ns = Context.NOTIFICATION_SERVICE;
nManager = (NotificationManager)getSystemService(ns);
}
#Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
// inform user that service has started
Toast.makeText(getApplicationContext(), R.string.service_started,Toast.LENGTH_LONG).show();
String data = lookUpContacts();
if( saveToSDCard(getResources().getString(R.string.backup_file_name),data) )
{
Context context = getApplicationContext();
// create the statusbar notification
Intent nIntent = new Intent(this,contactViewer.class);//Intent nIntent = new Intent(Intent.ACTION_MAIN);
nIntent.setClass(context,contactViewer.class);
//nIntent.putExtra("data",data);
Notification msg = new Notification(R.drawable.icon,"All contacts records have been written to the file.",System.currentTimeMillis());
// start notification
//PendingIntent pIntent = PendingIntent.getService(getApplicationContext(),0,nIntent,PendingIntent.FLAG_UPDATE_CURRENT|Intent.FLAG_FROM_BACKGROUND);
PendingIntent pIntent = PendingIntent.getActivity(this,0,nIntent,0);
msg.flags = Notification.FLAG_AUTO_CANCEL;
msg.setLatestEventInfo(context,
"success",
"All contacts records have been written to the file.",
pIntent);
nManager.notify(NOTIFY_ID,msg);
}
}
#Override
public void onDestroy()
{
nManager.cancel(NOTIFY_ID);
super.onDestroy();
}
#Override
public IBinder onBind(Intent intent)
{
return null;
}
// function returns string containing information
// from contacts
public String lookUpContacts()
{
...
}
public boolean saveToSDCard(String fileName, String data)
{
...
}
}
I can only hope that whatever is causing my problem is something fixable and not more of the crazy glitches I've been getting with eclipse (which no one else seems to have ever seen >:U )
If you can help me solve this problem, please share.
If you can't help with this specific problem but feel obligated to say unrelated things about posting, styles, topics, or good practice, then DON'T
Thank you :D

Edit:
You're going to have to add a flag for FLAG_ACTIVITY_NEW_TASK:
nIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
This is because you're launching from outside your app (from the system notification bar).

This is what happens when people overwork themselves. XD
The only reason none of the tutorials I tired worked is because I misspelled my activity name in the manifest.
Thanks for stopping by

Just add following in contactBackup(service class),
Intent nIntent = new Intent(this,contactViewer.class);//Intent nIntent = new Intent(Intent.ACTION_MAIN);
nIntent.setClass(context,contactViewer.class);
nIntent.putExtra("data",data);
nIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Notification msg = new Notification(R.drawable.icon,"All contacts records have been written to the file.",System.currentTimeMillis());
// start notification
//PendingIntent pIntent = PendingIntent.getService(getApplicationContext(),0,nIntent,PendingIntent.FLAG_UPDATE_CURRENT|Intent.FLAG_FROM_BACKGROUND);
PendingIntent pIntent = PendingIntent.getActivity(this,0,nIntent,0);
msg.flags = Notification.FLAG_AUTO_CANCEL;
msg.setLatestEventInfo(context,
"success",
"All contacts records have been written to the file.",
pIntent);
nManager.notify(NOTIFY_ID,msg);
then get value in contactViewer class,
as,
String s=getIntent().getStringExtra("data");