Count text height

iPhone SDK Tips & Tricks

-(float)getHeightByWidth:(NSString*)myString:(UIFont*)mySize:(int)myWidth
{
 CGSize boundingSize = CGSizeMake(myWidth, CGFLOAT_MAX);
 CGSize requiredSize = [myString sizeWithFont:mySize constrainedToSize:boundingSize lineBreakMode:UILineBreakModeWordWrap];
 return requiredSize.height;
}

Http POST Request

iPhone SDK Tips & Tricks


NSString *post =[NSString stringWithFormat:@"userName=%@&password=%@",userName.text,password.text];

NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"https://localhost:443/SSLLogin/login.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];

NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(@"%@", data);

Determine a CLLocation from an address

iPhone SDK Tips & Tricks

-(CLLocationCoordinate2D) addressLocation {
   NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@&output=csv",
                                          [addressField.text stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
   NSString *locationString = [NSString stringWithContentsOfURL:[NSURL URLWithString:urlString]];
   NSLog(@"locationString = %@",locationString);

   NSArray *listItems = [locationString componentsSeparatedByString:@","];

   double latitude = 0.0;
   double longitude = 0.0;
   if([listItems count] >= 4 && [[listItems objectAtIndex:0] isEqualToString:@"200"]) {
       latitude = [[listItems objectAtIndex:2] doubleValue];
       longitude = [[listItems objectAtIndex:3] doubleValue];
/*    
       NSString *nameString = [NSString stringWithFormat:@"http://ws.geonames.org/findNearestAddress?lat=%f&lng=%f",latitude,longitude];
       NSString *placeName = [NSString stringWithContentsOfURL:[NSURL URLWithString:nameString]];
       NSLog(@"placeName = %@",placeName);
*/
   }
   else {
       //Show error
   }
   CLLocationCoordinate2D location;
   location.latitude = latitude;
   location.longitude = longitude;

   return location;

}