When I start app by custom scheme url,event 'deviceready' trigger,and window.handleOpenURL in the getBillFromLink() execute;
then I open a webpage and resume the app from it,but window.handleOpenURL didn't execute;function onResume and getBillFromLink will execute;
but no matter how many times I resume the app from webpage after the first time, window.handleOpenURL will execute normally;
Here are code:
$ionicPlatform.on("deviceready", function () {
    document.addEventListener("resume", onResume, false);
    getBillFromLink().then(function (data) {
        //todo
    });
});
function onResume() {
    getBillFromLink().then(function (data) {
        //todo
    });
}
function getBillFromLink() {
    var deferred = $q.defer();
    $timeout(function() {
        window.handleOpenURL = function(url){
            if(!!url){
                 deferred.resolve(url);
            }else{
                 deferred.reject(url);
            }
        };
    }, 0);
    return deferred.promise;
}
how could I deal with the trouble?
thanks for your advice and sorry for my poor English:-)