How to run react native app in background. I need the app to accept the voice command when i click the headset button even when the device is in locked state.
Basically headset button click event should trigger the app to listen for voice. Currently my app accepting the voice command in foreground mode and works. but my requirement is even if device is locked , up on clicking the head set button i should trigger the app.
It wasn't done before but today you can by adding some libraries to create a background service. I believe you can later capture the event you want. this what you will tell us.
Follow this link to learn how to create the background service
Libraries you will need:
React Native Queue
react-native-background-task
Related
I have an Expo app (which has been ejected but there is very little native code being used). I am using expo-notifications to schedule local notifications for the user. I am only doing this for background/killed state notifications. There are no foreground notifications.
I'd like to know if it's possible to turn them on or off when a button is pressed without losing all the notification data in React-native/Expo?
I want to add a toggle in the settings screen to turn notifications on or off and I can't figure out how to do this. I can of course cancel all scheduled notifications with cancelAllScheduledNotificationsAsync, but then if they toggle notifications back on all the existing ones would be lost.
I'm hoping to avoid having to store a bunch of data in AsyncStorage for this.
I'm working on handling this all in push notifications (which will solve a lot of headaches) but that's still a way out from being ready.
I have been searching through the Expo documentation and haven't been able to find anything.
Is it possible to bring an app to the foreground using expo?
e.g. if I made a simple alarm clock - would it be possible to bring the app to the foreground and show an alarm screen without actively clicking on a notification?
I'm interested in both iOS and Android - any information is very much appreciated.
I'm making an app which wants the user to keep the app open and not using other apps (to help them focuses on works), but allows them to turn the phone screen off. I used AppState API to detect if the app running in the background but it also triggered when the screen turned off.
So I need a way to know if the screen is on or off. I tried googling around but I couldn't find any solution.
Do compiled Expo.io React Native applications support "Always On" background location tracking, even when the app is not in use?
Expo just implemented Background Location
Instead of using the watchPositionAsync method, you will have to utilize TaskManager.defineTask method to register the background task out outside of the React event loop. Then, start the task with Location.startLocationUpdatesAsync.
Short answer is no. Quoting the "Why not expo" page:
Expo apps don’t support background code execution (running code when
the app is not foregrounded or the device is sleeping). This means you
cannot use background geolocation, play audio in the background,
handle push notifications in the background, and more. This is a work
in progress.
You will need to detach your app and add this behavior yourself, still doing so you lose some of the expo capabilities.
I am trying to get the correct event for the first start up in a react native app.
I understand AppState and can get these statuses from the React Native Docs
App States
active - The app is running in the foreground
background - The app is running in the background. The user is either
in another app or on the home screen
inactive - This is a state that occurs when transitioning between
foreground & background, and during periods of inactivity such as
entering the Multitasking view or in the event of an incoming call
In the docs it mentions that when the app first loads AppState.currentState will be null, but I can find when that would happen.
Why do I even care you ask, I am trying to send a "login" event, but I don't want it every time the app becomes active. If it is relevant I am working on a cross platform app, both Android and IOS need to be supported.