Countdown Timer help

HI, So have been trying to get my head around things here and am struggling with the basics! That said I find I’m learning more by deconstructing the code. So if possible could somebody write the correct code for the following.

a simple program containing the following:

A default countdown screen containing the timer itself along with a single button to start it. A smaller button to a seperate settings screen.

Settings screen should simply show:

how display is presented, minutes and seconds or just seconds. i.e Mins:Secs or Secs. (I’m guessing a switch or button would work best?)
a data entry point to set initial amount of time. Again this should follow format of first selection.

a link back to default screen. (this will be the same button that opened settings.

Default screen button when pressed will start the countdown, when countdown reaches 0 iphone will pulse vibrate 3x i.e. on/off/on/off/on/off. then cycle will reset itself.

during the countdown sequence the single button should be able to reset the sequence (also it will change to a different png) and await the button press again. To reiterate, not pause the clock but reset it to initial number.

I’m a complete noob so my apologies if this is a lot of work, would really be very grateful of any assistance. This is only the beginning of my journey into coding and this would really help me get my head around it all.

Many Thanks. [import]uid: 12261 topic_id: 4440 reply_id: 304440[/import]