I want to show notification of my application in the form of icon,whether it is run in background or foreground.If we launch application from notification then I want my applications state prior to application in background.
Android apps retain their state by default. There are a few exceptions to this, but normally its not a problem. To enable your application to do work in the background you should look into the Service class.
http://developer.android.com/guide/components/services.html
You can use the android notification from here
And you can use the service if you are developing and media applicaion.
Related
I am developing a system app. I am having foreground service which has a persistent notification showing on.
I want to hide that notification. as a System app can we do that?
If not as a system app can we have other options or can we make background service not killable when clearing the memory?
suggest the best replacement.
Thanks
I have a situation on my React Native app, where user can start a timer and isRunning and startTime states are stored in the app so that it can display current running time when the app is in foreground even though the user quits the application at some point and opens it again.
Is there a way to show notification icon on status bar when the timer is running, but user has quit the application to indicate that the timer is currently "running" (actually it is not doing any operations on background) on background?
I have encountered some apps that display a silent notification that is not directly closable after I have quit the app, but I haven't seen a situation where status bar notification is present (together with notification) until some condition is met after the app is quit by the user.
Is there a way to achieve this? I am using react-native-push-notification and Firebase to push notifications in my app overall.
React-Native manages only Active and Background/Inactive/Foreground state. When user kill the app. JS engine shuts down.
All you can use is Local Notification and Scheduled Notification. I also have one app in which user set a reminder time. And notification invoke at that specified time.
Using Firebase I guess you need to call api after some specific interval for push notification from server side.
I am not an expert in background services or android development but here is my thought... I believe you could dig in and write some java android code for a background unstoppable service (persistent on app close or background states). You can do this by creating a bridge and using native modules to manage your background services. I came across a great resource on medium that details the process of creating a background service, a broadcast receiver and maintaining Headless instance even when the app is closed or the device restarts.Hope that helps you achieve your goal.
Edit
This ready made package will help you with better. Check it out. You actually don't have to write native android java code at all.
I didn't find any documentation about that. Is it possible to create a foreground service on android wear? Usually the foreground state is related with an ongoing notification but it's not possible on wear so I'm a bit confused. Is there anyone has a foreground service on wear?
As per documentation:
"The system enforces a timeout period. If you are displaying an activity and user's don't interact with it, the device sleeps. When it wakes back up, the Wear home screen is displayed instead of your activity. If you need to show something persistent, create a notification in the context stream instead."
So, i believe it's possible to have a persistent UI (may be not an ongoing foreground notification but a card or a stack instead).
Hope it helps.
I am creating simple application for Notification. It is showing notification properly But my main question is,
Why Notification not display when application stop? Any special settings for that. Please help me.
Application stop from:
1. Setting/application/manage application
2. selecting application
3. force stop
this way i stop my application
Thank you!
You need to go for Service development for notification for your android application. You need to just start the service in your android application then even though your app stops, your notification will not affect. It will continuous in running mode at background.
Here are two examples from you can learn easily:
Android Service example-1
Android Service example-2
The requirement is for an enterprise application. The application will be started on device boot. It will be running in the background and the user should not be able to disable or Stop the application. In Android a user can go to Settings->Application->Manage Application and stop my application. Is there any way to prevent this from happening?
No there is not. You can prevent Android from stopping the application by utilizing a Service and marking it as a foreground service, though this will require your application to display an icon in the status bar.
You can not make your application live forever, but it depends on what you really want to do. It's possible to receive a lot of events of the mobile and execute code even if your Activity/Service is not running. You can use BroadcastReceivers to look for interesting events and then start a service. I do it for an Enterprise Application that sends an event to a main server when the user has received/made a call.