Develop Reference

Android Notification not working for single click/tap on lock screen

I am putted my logic in android background service,which will be start on onClick action of my sticky notification.Everything working fine but problems are:-
When I am lock my phone and try to click/tap on notification it requires double click/tap always.
My logic is in background service but after clicked on notification Background service does not start until my mobile is unlocked.(Background service is sticky)
Below code is used for generate a sticky notification.
private void Notify() {
Context objContext = this.cordova.getActivity();
Intent objIntent = new Intent(objContext, ApiCallServeice.class);
PendingIntent pi = PendingIntent.getService(objContext, intNotificationId, objIntent, PendingIntent.FLAG_CANCEL_CURRENT);
Notification.Builder builder = new Notification.Builder(objContext);
builder.setContentTitle("Click to get help.");
builder.setAutoCancel(false);
builder.setSmallIcon(objContext.getApplicationInfo().icon);
builder.setOngoing(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
builder.setVisibility(Notification.VISIBILITY_PUBLIC);
}
builder.setContentIntent(pi);
builder.build();
myNotication = builder.getNotification();
manager.notify(intNotificationId, myNotication);
}
Please suggest me the solution or need to set any flag in my code.

For getting click on notification UI everwhere.We need to use the Remote View in which you can put the button overlay on whole layout and write click listener on that button
Below is the update code I am used:-
private void Notify() {
Context objContext=this.cordova.getActivity();
Intent objIntent = new Intent(objContext, ApiCallServeice.class);
PendingIntent pi = PendingIntent.getService(objContext, intNotificationId, objIntent, PendingIntent.FLAG_CANCEL_CURRENT);
RemoteViews objRemoteViews = new RemoteViews(objContext.getApplicationContext().getPackageName(), R.layout.your_notification_layout);
objRemoteViews.setOnClickPendingIntent(R.id.your_notification_clickable_button, pi);
Notification.Builder builder = new Notification.Builder(objContext);
builder.setAutoCancel(false);
builder.setSmallIcon(objContext.getApplicationInfo().icon);
objRemoteViews.setImageViewResource(R.id.img_icon, objContext.getApplicationInfo().icon);
builder.setOngoing(true);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
builder.setVisibility(Notification.VISIBILITY_PUBLIC);
}
builder.setContent(objRemoteViews);
builder.build();
myNotication = builder.getNotification();
manager.notify(intNotificationId, myNotication);
}

How to make android lollipop notification dismissable on lockscreen?

On lollipop, If the user has a pin set then some notifications aren't able to be swiped away. they act like a persistent notification when attempting to be dismissed.
Some apps notifications are able to be swiped away on the lockscreen without unlocking.
I have only tested this with hide sensitive notification content, does a flag set change this ability?
How do I achieve this?

This flag makes your notification stick:
Notification.FLAG_ONGOING_EVENT;
If you leave it out you can remove it. If you put it in, it sticks.
FYI: How I make my notifications:
//These are parameters for setting up the tag in the tray
private static final String NOTIFICATION_ID_TAG="notificationID";
private static final int NOTIFICATION_ID=123456;
public void createNotification() {
// Prepare intent which is triggered if the
// notification is selected
Intent intent = new Intent(this, MainActivity_Host.class);
intent.putExtra(NOTIFICATION_ID_TAG, NOTIFICATION_ID);
PendingIntent pIntent = PendingIntent.getActivity(this, 0, intent, 0);
// Build notification
Notification noti = new Notification.Builder(this)
.setContentTitle("Service Running")
.setContentText("The service is running").setSmallIcon(R.mipmap.ic_launcher)
.setContentIntent(pIntent)
.build();
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
//THIS FLAG MAKES THE NOTIFICATION STICK = YOU CAN'T SWIPE IT AWAY... IF YOU LEAVE IT OUT YOU CAN REMOVE THE NOTIFICATION
noti.flags |= Notification.FLAG_ONGOING_EVENT;
notificationManager.notify(NOTIFICATION_ID, noti);
}
This is how you can remove the notification from within the code:
//Erase the notification that we set up when the service started
NotificationManager notificationManager = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTIFICATION_ID);
As you see, you can get the notification from the NotificationManager by the NOTIFICATION_ID you used to make it. This is just a number i made up.

Refreshing existing notifications automatically

I try to make my notification(from Service) updating or refreshing in every five minutes. How can I do this? This is, what i want to update.
if (...){
int icon = R.drawable.updatedImage1;
long when = System.currentTimeMillis();
NotificationManager notificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
CharSequence message = "II Tydzień";
Notification notification = new Notification(icon, message, when );
String title = this.getString(R.string.app_name); // Here you can pass the value of your TextView
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP );
PendingIntent intent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(this, title, message, intent);
notification.flags |= Notification.FLAG_NO_CLEAR;
notificationManager.notify(0, notification);
} else { ...other notification }
Condition is period of time, so I need to change notification depending on what time is it.

You can use AlarmManager to schedule your notification repeatedly at different time intervals. The docs mention that:
This class provides access to the system alarm services. These allow you to schedule your application to be run at some point in the future. When an alarm goes off, the Intent that had been registered for it is broadcast by the system, automatically starting the target application if it is not already running
You might be able to use setRepeating function for your purpose.

How to add my app's icon into the status bar when my app is running?

I tried to use the Notification.Builder and the Notification classes.
I tried using this code :
Notification notification = new Notification.Builder(this).build();
notification.icon = R.drawable.ic_launcher;
notification.notify();
but it seems useless.
I only want my app's icon to be added next to the battery icon,wifi icon and 3g icons.. Any way to do that? I appreciate your help.

You have to call the method build() after you have finished describing your notification. Check out the Android reference for an example.
Basically, you have to change your code to the following:
Context context = getApplicationContext();
NotificationCompat.Builder builder = new NotificationCompat.Builder(context )
.setSmallIcon(R.drawable.ic_launcher);
Intent intent = new Intent( context, MainActivity.class);
PendingIntent pIntent = PendingIntent.getActivity(context, mID , intent, 0);
builder.setContentIntent(pIntent);
NotificationManager mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notif = builder.build();
mNotificationManager.notify(mID, notif);
Note: this code will only allow to show your icon in the notification bar. If you want it to persist there, you will have to use FLAG_ONGOING_EVENT

You can add your app icon for status bar notification. Try this one
Notification notification = new Notification.Builder(this).setSmallIcon(R.mipmap.ic_launcher).build();

android memory leak in notification service

I have a service which creates a notification and then updates it with certain information periodically. After about 12 mins or so the phone crashes and reboots, I believe it is caused by a memory leak in the following code to do with how I am updating the notification, could someone please check/advise me if this is the case and what I am doing wrong.
onCreate:
mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
createNotification:
private void createNotification() {
Intent contentIntent = new Intent(this,MainScreen.class);
contentIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent appIntent =PendingIntent.getActivity(this,0, contentIntent, 0);
contentView = new RemoteViews(getPackageName(), R.layout.notification);
contentView.setImageViewResource(R.id.image, R.drawable.icon);
contentView.setTextViewText(R.id.text, "");
notification = new Notification();
notification.when=System.currentTimeMillis();
notification.contentView = contentView;
notification.contentIntent = appIntent;
}
updateNotification:
private void updateNotification(String text){
contentView.setTextViewText(R.id.text, text);
mNotificationManager.notify(0, notification);
}
Thanks in advance.

I stumbled upon the same problem. Looks like that if you don't "cache" the RemoteView and Notification in the service, but re-create them from scratch in the "update" routine this problem disappears. Yes, I know it is not efficient, but at least the phone does not reboot from out of memory errors.

I had the very same problem. My solution is close to the one that #haimg said, but I do cache the notification (just the RemoteView is recreated). By doing so, the notification won't flash again if you are looking at it.
Example:
public void createNotification(Context context){
Notification.Builder builder = new Notification.Builder(context);
// Set notification stuff...
// Build the notification
notification = builder.build();
}
public void updateNotification(){
notification.bigContentView = getBigContentView();
notification.contentView = getCompactContentView();
mNM.notify(NOTIFICATION_ID, notification);
}
And in the methods getBigContentView and getCompactContentView I return a new RemoteViews with the updated layout.