My son is building an i Phone app using Xcode. The app offers daily advice and therefore needs to 'roll over' to a new 'page' every 24 hours. I have 365 pieces of advice but he has been unable to make it advance. Any ideas on how to code the update every 24 hours?

I appear to have added this twice - not sure how I did that and don't seem to be able to delete - apologies

No worries about the additional post. I can think of a few ways to do this. -Have the phone check it's internal date before determing which screen to show. Screen, as in which one of the screens setup in the config.txt file. Not sure what type of content this is? -Use only ONE screen, connect it to a URL and force it to refresh each time. This screen would make a URL request to the URL for the daily content. Your backend script would determine what content to show. This method would require the app to be online or it would not get the new screen. In the first method, you'll need to figure out where to customize the code a bit to launch the screen for the right day. Without knowing more about how it's setup (menu, buttons, etc) it will be tough to recommend the best approach? I'm thinking a menu item with a "daily content" label...tapping that button would run a little routine to check the date before loading the proper screen. Have a look at the "rowDidSelect" method in the menu plugin you're using, that's where you'll do the math to determine what day it is before finding the "screen id" of the appropriate content in your JSON.

Thank you David - this is most helpful. I like the first option best as you point out that it is independent of being online etc. I will get my son to start working on this now. He is just about to start a computer science degree so fantastic timing. My thanks Peter

Subscribing to this thread in the hopes that you'll post the final solution your son comes up with! Could be very useful in any number of apps! Mark

OK - I will keep you posted

You could use an html doc with javascript. This example would display a different jpg based on the current date (ie. picture911.jpg, picture912.jpg, etc) In the head, you'd use something like this: <script type="text/javascript" language="JavaScript"> FirstPart = '<img border="1" src="picture'; LastPart = '.jpg">'; function printImage() { var d = new Date(); var Today = d.getDate(); var Month = d.getMonth(); document.write(FirstPart + Month + Today + LastPart); } </script> Then in the body: <script type="text/javascript" language="JavaScript"><!-- printImage(); //--></script> You could modify this to display text or other files as well.

Thank you also for this suggestion - I will let you know which way we intend to go

What we have done is to develop the content into an excel spreadsheet and then call on particular pieces of data by the day concerned. Thanks for the help