cordova - Ionic 2: backgroundMode is never enabled -


i trying make app work in background plugin backgroundmode. however, enable in code, it's never enabled. have imported it. code:

declare var cordova:any;      console.log("started")     document.addeventlistener('deviceready', function () {            console.log("ready")     cordova.plugins.backgroundmode.enable();     if(cordova.plugins.backgroundmode.isenablisactive()==true){         console.log("it works!")     }}, false);

it prints out started , ready

i have tried follow katzer's guide , solution, none of them worked me.


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