Example CODE : Convert Data Types

NSInteger

NSInteger aInteger = 1;

to NSString

NSString *aString = [NSString stringWithFormat: @"%ld", aInteger];

NSLog(@"Display Convert Integer to String : %@", aString);

OUTPUT : Display Convert Integer to String : 1

to NSNumber

NSNumber *aNumber = [NSNumber numberWithInteger:aInteger];

NSLog(@"Display Convert Integer to Number %@",aNumber.stringValue);

OUTPUT : Display Convert Integer to Number 1

NSString

NSString *str = @"04 28 1989";

to NSInteger

int *aStringgg = [str intValue];

NSLog(@"Display Convert String to NSInteger : %i",aStringgg);

OUTPUT : Convert String to NSInteger : 4

int aValue = [[str stringByReplacingOccurrencesOfString:@" " withString:@""] intValue];

NSLog(@"Display Convert String to NSInteger : %i", aValue);

OUTPUT : Display Convert String to NSInteger : 4281989

to NSNumber

NSNumber *aNumber = [NSNumber numberWithInt:[str intValue]];

NSLog(@"Display Convert String to NSNumber : %@",aNumber.stringValue);

OUTPUT : Display Convert String to NSNumber : 4

NSNumber

NSNumber *anNumber = @274566;

to NSString

NSString *anStringg = [NSString stringWithFormat:@"%@", anNumber];

NSLog(@"Display Convert Number to String : %@",anStringg);

OUTPUT : Display Convert Number to String : 274566

to NSInteger

NSInteger *anInteger = [anNumber integerValue];

NSLog(@"Display Convert Number to Integer : %i",anInteger);

OUTPUT : Display Convert Number to Integer : 274566

NSData

NSData *anData = [@"iOS Developer Tips" dataUsingEncoding:NSUTF8StringEncoding];

NSData *anData = [@"04 28 1989" dataUsingEncoding:NSUTF8StringEncoding];

to NSString

NSData *anData = [@"iOS Developer Tips" dataUsingEncoding:NSUTF8StringEncoding];

NSString *sssttr = [[NSString alloc] initWithData:anData encoding:NSASCIIStringEncoding];

NSLog(@"Display Convert NSData to String: %@", sssttr);

OUTPUT : Display Convert NSData to String: iOS Developer Tips

// Convert to Base64 data

NSData *base64Data = [anData base64EncodedDataWithOptions:0];

    

    

// Now convert back from Base64

NSData *nsdataDecoded = [base64Data initWithBase64EncodedData:base64Data options:0];

NSString *anStringData = [[NSString alloc] initWithData:nsdataDecoded encoding:NSUTF8StringEncoding];

NSLog(@"Display String : %@", anStringData);

OUTPUT : Display String : iOS Developer Tips

to NSInteger

NSData *anData = [@"04 28 1989" dataUsingEncoding:NSUTF8StringEncoding];

NSString *anStringData = [[NSString alloc] initWithData:anData encoding:NSASCIIStringEncoding];

NSInteger *anInteger = [anStringData intValue];

NSLog(@"Display data : %i", anInteger);

OUTPUT : Display Data : 4

to NSNumber

NSData *anData = [@"04 28 1989" dataUsingEncoding:NSUTF8StringEncoding];

NSString *anString = [[NSString alloc] initWithData: anData encoding:NSASCIIStringEncoding];

NSNumber *anNumberrr = [NSNumber numberWithInt:[anString intValue]];

NSLog(@"Display Number : %@", anNumberrr);

OUTPUT : Display Number : 4