Alert Handlers

[Mike6580064]

When I attempt to login to my app with my device's network connection off, I get the alert of a login error that still tells me that the reason I can't log in is because of an incorrect username or password (the alert I set up on a login error), when the real reason is because of a connectivity error. I have two questions:

1) Can I allow access to the app even without being connected to a network/wifi?

2) If not, can I make the alert notify the user that there is no connectivity to their device (instead of receiving an incorrect username/password alert when it's really a connectivity issue)? Can this alert fire as soon as the app is launched if there is no connection detected?

[Evgene Karachevtsev]

Hello Mike,

1) Appery.io login service uses REST API it supposes to use the internet connection.
2) You should use "Online" and "Offline" events to handle internet connection action.

[Mike6580064]

Evgene,

Please explain how I would use "Online" and Offline" events. Would I invoke JS on page load of my login page?

Thanks,
Mike

[Mike6580064]

Evgene,

I've added an Offiline event on my login page that successfully fires an alert when the page loads. However, I'd still like to fire the alert when the user attempts to click the login button if there is no connection. Is this possible?

[Mike6580064]

Also, I would like to change the default title of the alert. Currently it's showing the name of my page "Login.html"

I tried the following to no avail. What am I doing wrong?

alert ("Incorrect Username and/or Password", {
title:"Login Error"});

[Kateryna Grynko]

Hi Mike,

1) On Offline/Online events save a localStorage variable with values "offline"/"online" accordingly. On button click check it and display a message if it equals "offline".

2) Use the following codealert()/code:
http://docs.phonegap.com/en/3.0.0/cor...

[Mike6580064]

Katya,

I've set a LSV on an offline event and bound it to my login button. On button click am I running JS? I'm not sure of the proper command to use here...

Thanks,
Mike

[Kateryna Grynko]

Hi Mike,

Run this code:prenavigator.notification.alert(
'You are the winner!', // message
alertDismissed, // callback
'Game Over', // title
'Done' // buttonName
);/pre

[Mike6580064]

Katya,

Yes but how do I fire this code only when the local storage variable (offline) is true?

[Mike6580064]

Also, this code does not work for me when testing IPA on iOS 6 and 7. Alert never shows and the activity spinner eternally spins.