I'm using flutter local notification plugin and I want the user to be able to customize the notification sound and vibration but the plugin's docs says:
For Android 8.0+, sounds and vibrations are associated with
notification channels and can only be configured when they are first
created. Showing/scheduling a notification will create a channel with
the specified id if it doesn't exist already. If another notification
specifies the same channel id but tries to specify another sound or
vibration pattern then nothing occurs.
so I looked up for deleting the channel just to create a new one with the new settings and the docs says that it's a feature in android but I couldn't find any reference on how to do that.
is there's a way to do that, or is there's any another solution?
thanks in advance.
I didn't find an answer or solution about deleting channels, but I tried making a channel for every sound just by using the sound name as an id for the channel, and it worked :).
Related
I was wondering if Flutter has the ability to generate push notifications from within the app. If so is there a code example of this?
Description:
An event occurs on the flutter app such as a button being clicked or an if statement being triggered, I want a push notification sent to the user.
The app should also always be running in the background, is this possible? If so can you provide me a link with an example of this implementation.
Thanks in advance for all the help!
I have looked on google but I haven't been able to find a lot of information regarding these two topics.
Being an iOS engineer, I'd say that you actually want local notifications. Push notifications are usually being sent by a server.
You could check how it's usually done on iOS natively: developer.apple.com.
We are developing an app with angular/ionic in which we use capacitor jitsi plugin for video calls. What we are now trying to do is to receive notifications (via firebase) like in whatsapp with the incoming call screen and two buttons to accept and decline. Any idea on how to do that?
Thanks
If you got the choice to change the notification service, instead or directly using firebase, you could use Onesignal which extends firebase and they already have a service named VOIP notifications which should kinda do your needs and here is the link:
https://documentation.onesignal.com/docs/voip-notifications
In case your are restricted with firebase or need to know how this could be done, bellow will be the way to achieve it..
As for android:
First as logic part, you need to add some code in the native layer since hybrid apps usually can't interact from JavaScript side to native side in case app was not launched, so in order to wake the application on a specific event like notification received or any other actions that phone system can hold..
Second, as technical part, you need to add broadcast receivers and the receivers role stand to interact as native code with system. example in the link below:
https://www.digitalocean.com/community/tutorials/android-broadcastreceiver-example-tutorial
also another video about foreground and background broadcast receiver service in the link below:
https://www.youtube.com/watch?v=rlzfcqDlovg
video code output in git:
https://github.com/borntocoderepos/callrecorder
in the Youtube video example, the user is launching a toast message on phone call if app was opened or closed (background or foreground) so you can launch your app with intent with passing data and capture the data on app start as Deep Links as capacitor (https://capacitorjs.com/docs/guides/deep-links) or Cordova (https://ionicframework.com/docs/native/deeplinks)..
And instead of listening to network or phone calls, you can listen to Notifications and for sure you need to do searches about your topic and or the notification service that you'll choose.
Now for the video and the tutorial not sure of the quality of code so make sure to do more researches about the way its done from different places (could be outdated code or bad code quality or even not complete service and will discuss about this point below).
In android there is policy about using background and foreground services so once you start a service you need to end it after your done so make sure after you receive the notification and launch your app to stop the listening since it would cost power usage and perhaps could be stopped by Playstore as harmful app.
Now considering IOS it should be the same concept so make searches about this topic, but for IOS, the listeners policy as I remember , the receivers should not be waked up for more than 15 mins, so also keep this in mind and make sure you stop the receivers directly after launching your Hybrid app.
Broadcast equivalent receiver for IOS:
http://www.andrewcbancroft.com/2014/10/08/fundamentals-of-nsnotificationcenter-in-swift/
I have implemented a scheduled notification in flutter. By default it's using Ring Volume, I want to use Alarm Volume instead of Ring Volume. So How to implement Alarm Volume in flutter_local_notification?
Here is what documentation says that may help.
For Android 8.0+, sounds and vibrations are associated with notification channels and can only be configured when they are first created. Showing/scheduling a notification will create a channel with the specified id if it doesn't exist already. If another notification specifies the same channel id but tries to specify another sound or vibration pattern then nothing occurs.
How can I implement WhatsApp/Telegram like call notification when the flutter app is in the background or cleared from the recent task (clearing ram)? Can anyone let me know Exactly How to do this?
There is a great youtube series on this exact topic. In the series, a YouTuber by the name of the CS Guy creates a clone of Skype. I've placed the link to the video where he explains how to create a pop-up screen when a user calls another user, however, you may need to watch the previous videos within the series in order to get everything working. Its quite long but I recommend you watch the entire thing. In terms of displaying notifications when a user is called, I recommend you watch a video by Fireship listed below. In the video, he explains how to send notifications in the background when a certain event occurs in Firestore.
I can't explain the entire process in detail to achieve what you want but I can give a general overview of what you would need to do.
Watch the video/entire series by the CS Guy and complete everything
Learn how to send push notifications in firebase from Fireship
When a new document is created within the calls collection (You will understand once you finish the cs guy series) trigger cloud function.
Find the uid of the receiver of the call within the cloud function and grab the user's token from Firestore.
Finally, send a notification to the receiver telling them about the incoming call.
CS Guy:
https://youtu.be/v9ngriCV0J0
Fireship: https://youtu.be/2TSm2YGBT1s
I have done the exact same thing in my application and can help you out if you need further assistance, however, please go through both videos/series first.
You can use the flutter_local_notifications plugin with the firebase_messaging plugin.
From the documentation of the flutter_local_notifications plugin;
[Android] Support for the following notification styles
Big picture
Big text
Inbox
Messaging
From the documentation of the firebase_messaging plugin;
With this plugin, your Flutter app can receive and process push notifications as well as data messages on Android and iOS.
I found that a variable created in SpringBoard can not be accessed by other regular applications. But now I want to make a flag variable that can share status in the global environment efficiently.
I thought a file created at some path could do that, but that may be not fast enough.
Does any body know how to do this?
You can try combination of a file with notifications of changes in this file. Notifications between processes can be sent in two ways:
Darwin notification center CFNotificationCenterGetDarwinNotifyCenter
Distributed notification center CFNotificationCenterGetDistributedCenter - private API
Distributed notification center is better because you can send notification with some data attached to it. Darwin notification center ignores all user info passed to it. So when you changed some flag and saved it in a file you can send notification with this flag's new value. You don't even need to open file and get flag's value yourself. All other apps just need to listen for this notification.
Here is CFNotificationCenterGetDistributedCenter prototype
CFNotificationCenterRef CFNotificationCenterGetDistributedCenter();
Update:
This function is available in iOS 5.0 and above. If you need to support older versions there are two solutions:
Darwin notification center
CFMessagePort - can transmit arbitary data.
If you really need to support older versions I suggest you using CFMessagePort. It's simple and flexible solution, well documented. If you having troubles with it you can always find working examples.
You can store your var in the keyChain, and make all app which wanna share it in one access group. Hope it help.