Notification not triggered when device is locked with app in foreground

Notification is not showing when phone is locked while app is on foreground

Your Environment

• Plugin version: cordova-plugin-local-notification 0.9.0-beta.3 “LocalNotification”
• Platform: iOS
• OS version: 11.2
• Device manufacturer / model: Apple / iPhone SE
• Cordova version (cordova -v): 8.0.0
• Cordova platform version (cordova platform ls): ios 4.5.4
• Plugin config
• Ionic Version (if using Ionic) 3.9

Expected Behavior

Notification should show up.

Actual Behavior

Notification doesn’t show up

Steps to Reproduce

Reproduce this issue; include code to reproduce, if relevant

1. Start the app
2. When app is ready, lock the screen without leaving the app
3. Register a local notification while the app is in background
4. Notification doesn’t show up

Here is the code I use :

let localNotification = {
    id: 1,
    title: data.title,
    text: data.body,
    foreground: true,
    sound: 'file://assets/ringtones/ios.aiff',
    vibrate: true,
    actions: [
        {id: 'hangon', title: 'Décrocher', launch: true}
    ],
    trigger: {
        at: Date.now()
    },
    data
};

console.log('[] localNotification', localNotification, JSON.stringify(localNotification));
cordova.plugins.notification.local.schedule(localNotification);

Context

I’m trying to register a local notification from a VoIP service. Everything is working fine :

• when the app isn’t open
• when the app is opened then put in background (ie. i’m using gmail)
• when the app is opened then put in background and device locked

But when the app wasn’t in background before locking the device, it fails.

Debug logs

2018-05-04 12:26:20.867588+0200 MyApp[930:362454] [DYMTLInitPlatform] platform initialization successful
2018-05-04 12:26:21.003005+0200 MyApp[930:362403] Apache Cordova native platform version 4.5.3 is starting.
2018-05-04 12:26:21.004050+0200 MyApp[930:362403] Multi-tasking -> Device: YES, App: YES
2018-05-04 12:26:21.020523+0200 MyApp[930:362403] CDVWKWebViewEngine: trying to inject XHR polyfill
2018-05-04 12:26:21.056886+0200 MyApp[930:362403] CDVWKWebViewEngine will reload WKWebView if required on resume
2018-05-04 12:26:21.057016+0200 MyApp[930:362403] Using Ionic WKWebView
2018-05-04 12:26:21.057667+0200 MyApp[930:362403] [CDVTimer][console] 0.077009ms
2018-05-04 12:26:21.057844+0200 MyApp[930:362403] [CDVTimer][handleopenurl] 0.082970ms
2018-05-04 12:26:21.060770+0200 MyApp[930:362403] Unlimited access to network resources
2018-05-04 12:26:21.061014+0200 MyApp[930:362403] [CDVTimer][intentandnavigationfilter] 3.121972ms
2018-05-04 12:26:21.061251+0200 MyApp[930:362403] [CDVTimer][gesturehandler] 0.132084ms
2018-05-04 12:26:21.079318+0200 MyApp[930:362403] [CDVTimer][splashscreen] 17.903924ms
2018-05-04 12:26:21.085788+0200 MyApp[930:362403] [CDVTimer][statusbar] 6.322026ms
2018-05-04 12:26:21.087142+0200 MyApp[930:362403] [CDVTimer][keyboard] 1.073003ms
2018-05-04 12:26:21.087713+0200 MyApp[930:362403] [CDVTimer][socialsharing] 0.292063ms
2018-05-04 12:26:21.089953+0200 MyApp[930:362461] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2018-05-04 12:26:21.090320+0200 MyApp[930:362461] [MC] Filtering mail sheet accounts for bundle ID: com.MyAppavocat.main, source account management: 1
2018-05-04 12:26:21.127196+0200 MyApp[930:362403] [CDVTimer][diagnostic] 39.281011ms
2018-05-04 12:26:21.129420+0200 MyApp[930:362403] iosrtcPlugin#pluginInitialize()
2018-05-04 12:26:21.144429+0200 MyApp[930:362403] PluginGetUserMedia#init()
2018-05-04 12:26:21.144652+0200 MyApp[930:362403] [CDVTimer][iosrtcplugin] 17.265916ms
2018-05-04 12:26:21.149287+0200 MyApp[930:362403] [CDVTimer][localnotification] 4.491925ms
2018-05-04 12:26:21.149378+0200 MyApp[930:362403] [CDVTimer][localnotification] 0.007987ms
2018-05-04 12:26:21.150918+0200 MyApp[930:362403] [CDVTimer][cordovacall] 1.493931ms
2018-05-04 12:26:21.150977+0200 MyApp[930:362403] [CDVTimer][TotalPluginStartup] 93.492985ms
2018-05-04 12:26:21.184412+0200 MyApp[930:362403] createNotificationChecker
2018-05-04 12:26:21.184881+0200 MyApp[930:362403] not coldstart
2018-05-04 12:26:21.223415+0200 MyApp[930:362403] active
2018-05-04 12:26:21.223619+0200 MyApp[930:362403] PushPlugin skip clear badge
2018-05-04 12:26:21.414033+0200 MyApp[930:362403] iosrtcPlugin#onReset() | doing nothing
2018-05-04 12:26:23.913329+0200 MyApp[930:362403] Ionic Native: deviceready event fired after 1670 ms
2018-05-04 12:26:23.913468+0200 MyApp[930:362403] DEVICE READY FIRED AFTER 1390 ms
2018-05-04 12:26:23.913630+0200 MyApp[930:362403] ERROR: the cordova-plugin-ionic plugin is not installed. Install it for better device information for runtime errors.
2018-05-04 12:26:23.915727+0200 MyApp[930:362403] WARN: (getRootNav) is deprecated and will be removed in the next major release. Use getRootNavById instead.
2018-05-04 12:26:23.916471+0200 MyApp[930:362403] registering iosrtc
2018-05-04 12:26:23.918688+0200 MyApp[930:362403] ERROR: Plugin 'HeaderColor' not found, or is not a CDVPlugin. Check your plugin mapping in config.xml.
2018-05-04 12:26:23.922767+0200 MyApp[930:362403] [AppUpdateService] needUpdate() Dev
2018-05-04 12:26:23.924336+0200 MyApp[930:362403] loading user from localstorage
2018-05-04 12:26:23.940186+0200 MyApp[930:362403] OPEN database: _ionicstorage
2018-05-04 12:26:23.941711+0200 MyApp[930:362403] new transaction is queued, waiting for open operation to finish
2018-05-04 12:26:23.944560+0200 MyApp[930:362403] [AppUpdateService] getCurrentVersion ENV [object Object]
2018-05-04 12:26:23.954941+0200 MyApp[930:362403] OPEN database: _ionicstorage - OK
2018-05-04 12:26:23.955293+0200 MyApp[930:362403] DB opened: _ionicstorage
2018-05-04 12:26:24.313850+0200 MyApp[930:362403] We have permission to send push notifications
2018-05-04 12:26:24.314920+0200 MyApp[930:362458] Push Plugin VoIP set to true
2018-05-04 12:26:24.317022+0200 MyApp[930:362403] VoIPPush Plugin register success
2018-05-04 12:26:24.320266+0200 MyApp[930:362403] push.onRegister [object Object]

# pausing the app by locking it
2018-05-04 12:26:57.968795+0200 MyApp[930:362403] [App] onPause

# sending the VoIP notification which should create a local one
2018-05-04 12:27:02.121408+0200 MyApp[930:362403] VoIP Notification received
2018-05-04 12:27:02.121535+0200 MyApp[930:362403] Notification received
2018-05-04 12:27:02.121675+0200 MyApp[930:362403] Push Plugin key: alert
2018-05-04 12:27:02.121739+0200 MyApp[930:362403] Push Plugin key: content-available

# here is the payload
2018-05-04 12:27:02.419545+0200 MyApp[930:362403] Push on notification [object Object] {"message":"This one won't show when it's scheduled","additionalData":{}} false

# this scheduling isn't triggered instantly
2018-05-04 12:27:02.420536+0200 MyApp[930:362403] scheduling
2018-05-04 12:27:02.420980+0200 MyApp[930:362403] [] localNotification [object Object] {"id":1,"title":"Local notification.","foreground":true,"sound":"file://assets/ringtones/ios.aiff","vibrate":true,"actions":[{"id":"hangon","title":"Décrocher","launch":true}],"trigger":{"in":0,"unit":"second"},"data":{"message":"This one won't show when it's scheduled","title":"Local notification","additionalData":{"deeplink":"CallPage","receiveCall":true,"coldstart":false,"deeplinkParams":{"id":"bb4410","type":"client"},"username":"Client T","content-available":1,"foreground":false}}}

# receiving another VoIP notification which triggers the 1st one when the phone wakes up
2018-05-04 12:27:22.083873+0200 MyApp[930:362403] VoIP Notification received
2018-05-04 12:27:22.084086+0200 MyApp[930:362403] Notification received
2018-05-04 12:27:22.084253+0200 MyApp[930:362403] Push Plugin key: alert
2018-05-04 12:27:22.084511+0200 MyApp[930:362403] Push Plugin key: content-available
2018-05-04 12:27:22.410697+0200 MyApp[930:362403] Push on notification [object Object] {"message":"This notifications triggers the 1st one because it wakes up the device","title":"Non local notification","additionalData":{"content-available":1,"foreground":false,"coldstart":false,"endCall":true,"deeplink":"HistoryPage"}} false

[Tawpie]

You have a real challenge! There are a few things you must consider:

1. you must give the operating system time to create the notification, iOS in particular will not present notifications that happened ‘in the past’
2. Android doesn’t guarantee delivery of the notification at an exact time, it is late by several seconds and has been known to be late by several minutes. There’s nothing non-google software can do about that so on Android you can expect that your notifications will always be a little late.
3. You app must have been the last app in the foreground and the phone must have been recently unlocked or else your code that sets the notification will not run. “Recently” means within the last 30 seconds—you can ask the OS for extra time when the OS takes the phone to lock, but on iOS that time is quite limited. If either case is not true, your software isn’t running and you obviously cannot do anything.

If your requirement is to create the notification to go off as soon as possible after the screen goes to lock, you must: 1) ask the OS for extra time 2) while your are in the ‘extra time’ (your onPause handler) schedule the notification a few seconds in the future. Do this first so hopefully everything gets done before the OS kills your code.

There’s no assurance that’ll work—I would start looking for other ways to meet your requirement, local notifications might not work.

On May 7, 2018, at 1:55 AM, Hugo Heneault [e-mail] wrote:

@Tawpie As I’m using VoIP push notifications, I’m looking for an about-real-time notification, I can’t wait that long. 😮

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[HugoHeneault]

Not sure as it was ages ago. But something like ionic cordova plugin rm cordova-plugin-ionic-webview --save should do it.