How to define my string and type of encoding. NSString -NSSdata

Question

I am trying to post a string with 2 values to a URL. To define my string I am using:

NSString *post = [NSString stringWithFormat:@"...."];
NSData *postData = [post dataUsingEncoding: .... allowLossyConversion: NO];

The string I want to post is this one: geoX#value #geoY#value.
How do I add this string in my NSString command and what type of dataUsingEncoding should I use?

Also at the command:

[request setValue:@"....." forHTTPHeaderField:"...."]

What value do I add and what type of content if header -->content-type :text/html?

Answer 1

Assuming that you have the values stored in two variables as follows,

NSString *geoXValue = @"1.2343243";
NSString *geoYValue = @"1.5646546";

This is how you need to append the values to string,

NSString *post = [NSString stringWithFormat:@"geoX%@ geoY%@", geoXValue, geoYValue];

To convert this to data, you can use the following line,

NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO];

And to set the content-type in header, try this,

[request setValue:@"text/html" forHTTPHeaderField:"Content-Type"]

Hope it is clear now.