Appcelerator Developer Center Q&A Tag Feed (once)

How to get webview load to fire once and then reset

Ned Turner — Mon, 19 Nov 2012 00:43:39 -0800

Hi All

I am using webview load to detect when a page is loaded but i need it to only fire once but it fires many times i have come up with a solution below to get it fire once, but this will only happen once and once only i need it to fire every time a page is loaded but only once example.

webviewload = true;
webview.addEventListener('load', function() {
 
    if(webviewload){
 
        //run code to add stuff to webview this will run once
            webview.remove(oldsidebar);
            webview.add(newsidebar);
            webviewload = false;
       }
 
});

the above works fine for one webview load but if you run again it is obviously set to false so i can only run this code once.

I found a hack that kind off works for me but i am looking for a better solution i understand its firing because it fires on every element load ads etc on webview.

webviewload = true;
webview.addEventListener('load', function() {
 
    if(webviewload){
 
        //run code to add stuff to webview this will run once
            webview.remove(oldsidebar);
            webview.add(newsidebar);
            webviewload = false;
       }
 
       setTimeout(function(){
        webviewload = true;
    },5000)
 
});

ok above works but isn't ideal if the page take longer than 5 seconds to load etc i am getting problems.

Can anyone give me a suggestion on how to fire webview load once then reset so i can run a block of code correctly.

Hope this makes sense thanks

Display alert message only once

Markus Renström — Thu, 12 Apr 2012 07:32:08 -0700

I have a button, on click an alert appears and a new win will open.

button1.addEventListener('click', function(){
    var win1 = Ti.UI.createWindow({
        url:'some.js',
  })
 
  {
    alert("Hello! You will only se me once :)");
}; 
    win1.open();
});

Is it possible to display this alert only once (it will never appear again)?

How to start sound when android app starts

David Craigster — Tue, 17 May 2011 16:17:17 -0700

Hey there. Is there a way to start sound automatically once an android app has started? I can't find documentation on this site. Thank you

Swipe Event, fire only once

Clayton McIlrath — Tue, 17 May 2011 20:58:12 -0700

I have a swipe event listener on window, and I want it to only call loadMug() which does an xhr request only once.. currently when I swipe it calls my function for each x position I've moved, what's the easiest way to do this?

win.addEventListener('swipe', loadMug);