Tag Archives: NSString

Email id verification using Objective C

Hi, In order to verify an email address you have entered is valid or not using Objective C, use the following code. – (BOOL) checkYourMail: (NSString *) myEmail{ NSString *checkMail= @”[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,4}”; NSPredicate *matchMail = [NSPredicate predicateWithFormat:@”Matching %@”, checkMail]; return [matchMail evaluateWithObject:myEmail]; } 🙂

Adding Image to a UIImageView using Image URL

Hi, Sometimes you need to add Image to a UIImageView from the URL of the image you got. In that case, this is how you can add image to the UIImageView. NSString *picURL= @”http://photobucket.com/yourImage.gif”; NSData *picData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:mapURL]]; UIImage* picture = [[UIImage alloc] initWithData:picData]; [pictureView setImage:picture]; [picData release]; [picture release]; Here, pictureView is your UIImageView. 🙂

Delete a substring in Objective C, Iphone , Mac………….

This code snippet deletes a substring from a original string.. /** initialize two strings **/ NSString *string = @”This is heaven”; NSString *part = @”heaven”; /** Get the range of the substring in the original string **/ NSRange range = [string rangeOfString:part]; /** Delete the substring from the original string **/ [string deleteCharactersInRange:range]; Please leave your valuable comments………

Working with files in Objective C

Basic file operations Assumes the existence of a file called “testfile” in the current working directory #import #import #import #import #import int main (int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSString *fName = @”testfile”; NSFileManager *fm; NSDictionary *attr; // Need to create an instance of the file manager fm = [NSFileManager defaultManager]; //… Read More »

How to use picker in iphone, A simple example.

#import “ViewController.h” @implementation ViewController @synthesize mlabel; – (void)viewDidLoad { [super viewDidLoad]; arrayNo = [[NSMutableArray alloc] init]; [arrayNo addObject:@” Hello “]; [arrayNo addObject:@” Hai “]; [arrayNo addObject:@” Picker “]; [arrayNo addObject:@” Simple “]; [arrayNo addObject:@” example “]; [pickerView selectRow:1 inComponent:0 animated:NO]; mlabel.text= [arrayNo objectAtIndex:[pickerView selectedRowInComponent:0]]; } – (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView; { return 1; } – (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {… Read More »