How to use the URL to fill the picker

[ruchido]

Hi Guys,

that is my first post here. Im a new iPhone developer and Im developing an app which must fill the picker with sources from a web service.

for example a postal code:

you type the postal code and in a picker you choose your city.

the web service is working and Im able to get the information, but as it has too many nodes I want to create a picker such as a filter.

Thanks for you attemption and sorry if it's a stupid question...

[ruchido]

Could someone please help with this? I want to fill the picket with the content of a web service.

[H4CK3R]

You could try having the web service setup so it you pass "&output=total&postcode=?????" then it just prints to the page (no html or anything) the number of citys matching that postcode.

(an example would be something like this)
http://modmyi.com/cstats/index.php?p...ro&output=text

Then also
&output=text&postcode=????&city=1"
in the url like this would produce the of the first city with that postcode match.

This way you could do something like this.
(very simplified code)

//Setup
NSArray *options;

int total;
int requests;

requests = 1;



NSData *totalcities = [dataWithContentsOfURL:@"http://site.com/app/postcode.php?&output=total&postcode=%@", postcode];

total = totalcities; 


for(int i = requests; i <= total; i++)
{
NSData *temp = [NSData dataWithContentOfURL:@"http://site.com/app/postcode.php?&output=text&postcode=%@&city=%@", postcode, requests];

NSString = *temp2;
tem2 = [NSString stringwithformat:temp];

[options addObject:temp2];

requests++

}

And i haven't used NSPickers before but you'd probably do something like.

UIPickerView *cities = [UIPicker withNumberOfOptions:total];

and then fill the options with the array created above.

Sorry it's a bit messy but i hope you get the idea.