android - Jquery Mobile: loading spinner going crazy on second start-up -

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in (android) phonegap app, i've added code below show loading-spinner while logging in on facebook. @ first start-up, works beautifuly. however, when press back-button , launch app again, spinner out of control: spins way fast , short pauzes. also, spinner appears not in center of screen, higher (it looks it's centered text follows afterwards).

anyone familiar issue , knows how fix it?

function devicereadylistener() {     $.mobile.loading( 'show' );     console.log("device ready");     try {         fb.init({ appid:"xxx", nativeinterface:cdv.fb, usecacheddialogs:false });         navigator.splashscreen.hide();         getloginstatus();         document.addeventlistener("offline", onoffline, false);      } catch (e) {         alert(e);     } }


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