Mailing-List: contact issues-help@cordova.apache.org; run by ezmlm
Precedence: bulk
Date: Tue, 23 May 2017 21:59:04 +0000 (UTC)
From: "Grant Patterson (JIRA)" <jira@apache.org>
To: issues@cordova.apache.org
Message-ID: <JIRA.13074339.1495576689000.276666.1495576744126@Atlassian.JIRA>
In-Reply-To: <JIRA.13074339.1495576689000@Atlassian.JIRA>
References: <JIRA.13074339.1495576689000@Atlassian.JIRA> <JIRA.13074339.1495576689320@jira-lw-us.apache.org>
Subject: [jira] [Created] (CB-12846) WebView JS execution continues when app
 executes in background
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Tue, 23 May 2017 21:59:08 -0000

Grant Patterson created CB-12846:
------------------------------------

             Summary: WebView JS execution continues when app executes in background
                 Key: CB-12846
                 URL: https://issues.apache.org/jira/browse/CB-12846
             Project: Apache Cordova
          Issue Type: Bug
          Components: cordova-ios
    Affects Versions: cordova-ios@4.3.1
            Reporter: Grant Patterson


I'm using a [Cordova plugin|https://github.com/happydenn/cordova-plugin-gimbal2] that integrates [a third-party SDK|https://docs.gimbal.com/iosdocs/v2/devguide.html] to listen for bluetooth beacon sighting events. As expected, my app is allowed to run for 10 seconds in the background with the [bluetooth-central UIBackgroundMode|https://developer.apple.com/library/content/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/BackgroundExecution/BackgroundExecution.html]. Once the necessary processing is completed, the JS event loop runs until the 10-second window closes. Because beacon sightings happen as frequently as several per second, the app runs in the background constantly, killing the user's battery. I can setInterval() in JS with a 1000ms interval and it runs successfully every time; my Angular app runs $digest cycles in the background which are unnecessary and quite expensive.

I think I need a way for the native plugin code to relinquish execution and return the app to the background.

StackOverflow: [https://stackoverflow.com/questions/44145031/stopping-background-javascript-activity-on-location-triggered-bluetooth-central]


--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@cordova.apache.org
For additional commands, e-mail: issues-help@cordova.apache.org