[ https://issues.apache.org/jira/browse/CB-13947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cedric Reichenbach updated CB-13947: ------------------------------------ Description: When adding a `backbutton` event listener to `document`, Cordova disables default back button behavior (which is usually closing the app). Later, when removing the last event listener, it should re-enable default behavior, but does not. h2. Technical details Internally, cordova seems to use a channel to handle document event listener registrations, which should update the override state on every listener addition/removal: [https://github.com/apache/cordova-android/blob/eddad666ff60129bf716cee61c24d3d65741640f/bin/templates/project/assets/www/cordova.js#L1664] However, debugging indicates that `onHasSubscribersChange` is only triggered once, when adding a listener for the first time, but never on removal. was: When adding a `backbutton` event listener to `document`, Cordova disables default back button behavior (which is usually closing the app). Later, when removing the last event listener, it should re-enable default behavior, but does not. ## Technical background Internally, cordova seems to use a channel to handle document event listener registrations, which should update the override state on every listener addition/removal: [https://github.com/apache/cordova-android/blob/eddad666ff60129bf716cee61c24d3d65741640f/bin/templates/project/assets/www/cordova.js#L1664] However, debugging indicates that `onHasSubscribersChange` is only triggered once, when adding a listener for the first time, but never on removal. > Back button behavior doesn't revert to default when removing listeners > ---------------------------------------------------------------------- > > Key: CB-13947 > URL: https://issues.apache.org/jira/browse/CB-13947 > Project: Apache Cordova > Issue Type: Bug > Components: cordova-android > Affects Versions: cordova-android-7.0.0 > Reporter: Cedric Reichenbach > Assignee: Joe Bowser > Priority: Major > > When adding a `backbutton` event listener to `document`, Cordova disables > default back button behavior (which is usually closing the app). > Later, when removing the last event listener, it should re-enable default > behavior, but does not. > h2. Technical details > Internally, cordova seems to use a channel to handle document event listener > registrations, which should update the override state on every listener > addition/removal: > [https://github.com/apache/cordova-android/blob/eddad666ff60129bf716cee61c24d3d65741640f/bin/templates/project/assets/www/cordova.js#L1664] > However, debugging indicates that `onHasSubscribersChange` is only triggered > once, when adding a listener for the first time, but never on removal. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@cordova.apache.org For additional commands, e-mail: issues-h...@cordova.apache.org