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https://issues.apache.org/jira/browse/CB-14144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16517588#comment-16517588
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jcesarmobile commented on CB-14144:
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Yes, I just copy/pasted your code into a new Cordova project and created the
onBackButton function that just logs a message.
You can check it here
https://github.com/jcesarmobile/backButtonTest
> BackButton Event Listeners do not fire on Android API 23 or below
> -----------------------------------------------------------------
>
> Key: CB-14144
> URL: https://issues.apache.org/jira/browse/CB-14144
> Project: Apache Cordova
> Issue Type: Bug
> Components: cordova-android
> Affects Versions: cordova-android-7.0.0
> Environment: Using Android Studio emulators Galaxy, Pixel, Nexus 5...
> all exhibit this behaviour.
> Quasar Framework is building my project a long with webpack but I've no
> reason to suspect Quasar as the cause, they only register a single
> eventListener for backbutton and I've manually gone in and edited the source
> code for this listener and it never fires leading me to believe the problem
> is with Cordova.
> Reporter: altShiftDev
> Assignee: Joe Bowser
> Priority: Major
>
> App exits immediately on back button press without ever firing the
> eventListener designed to capture and reroute it.
> There is nothing wrong with my eventListener code, it's been tested on Api 25
> and higher and is very stable:
> `document.addEventListener('backbutton', this.onBackButton, false)`
> I have not yet tested to confirm if API 24 has this bug or not.
> This affects many of my users, including myself as I've got a phone running
> Android at these versions. The app is completely killed with every tap of the
> back button (new launches of the app cold boot with splashscreen) making it
> impossible to properly navigate the app: closing modals, moving backwards in
> operations, etc...
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