退出程序监听函数

/*退出程序监听*/
function exitListener() {
    uexWidgetOne.cbGetPlatform = function(opId, dataType, plat) {
        if (plat) {
            var count = 0;
            uexWindow.onKeyPressed = function(keyCode) {
                if (keyCode == 0 || keyCode == '0') {
                    if (count == 0) {
                        appcan.window.openToast("再按一次退出程序!", 1000, 5, 0);
                    }
                    count = count + 1;
                    setTimeout(function() {
                        count = 0;
                    }, 2000);
                    if (count > 1) {
                        appcan.window.closeToast();
                        uexWidgetOne.exit(0);
                    }
                }
            }
            uexWindow.setReportKey(0, 1);
            uexWindow.setReportKey(1, 1);
        }
    };
    uexWidgetOne.getPlatform();
}