Objective-c Address Book instance (using nsstring, nsarray, etc)

 

An example of learning the Foundation has used all the things mentioned above, which is not bad.

Code:

 

// The AddressCard interface declares the header file

AddressCard. h

# Import <Foundation/NSObject. h> <br/> # import <Foundation/NSString. h> </p> <p> @ interface AddressCard: NSObject <br/>{< br/> NSString * name; <br/> NSString * email; <br/>}</p> <p>-(void) setName: (NSString *) theName; <br/>-(void) setEmail: (NSString *) theEmail; <br/>-(void) setName: (NSString *) theName andEmail: (NSString *) theEmail; </p> <p>-(NSString *) name; <br/>-(NSString *) email; </p> <p>-(void) print; <br/>-(NSComparisonResult) compareNames: (id) element; <br/>-(void) dealloc; <br/> @ end <br/>

 

 

// AddressCard interface implementation file

AddressCard. m

# Import "addresscard. H "</P> <p> @ implementation addresscard <br/>-(void) setname: (nsstring *) thename <br/> {<br/> // release old object before dispatch a new one <br/> // (even when name is nil, you also can send it a message) <br/> [Name Release]; <br/> name = [[nsstring alloc] initwithstring: thename]; <br/>}</P> <p>-(void) setemail: (nsstring *) theemail <br/>{< br/> // release old object before dispatch a new one <br/> [email release]; <br/> email = [[nsstring alloc] initwithstring: theemail]; <br/>}</P> <p>-(nsstring *) name <br/>{< br/> return name; <br/>}</P> <p>-(nsstring *) email <br/>{< br/> return email; <br/>}</P> <p>-(void) setname: (nsstring *) thename andemail: (nsstring *) theemail <br/>{< br/> [email release]; <br/> [Name Release]; <br/> email = [[nsstring alloc] initwithstring: theemail]; <br/> name = [[nsstring alloc] initwithstring: thename]; </P> <p> name = thename; <br/> email = theemail; <br/>}</P> <p>-(void) print <br/> {<br/> nslog (@ "========================== ============ "); <br/> nslog (@ "|"); <br/> nslog (@ "| %-31 S |", [name utf8string]); <br/> nslog (@ "| %-31 S |", [email utf8string]); <br/> nslog (@ "| "); <br/> nslog (@ "|"); <br/> nslog (@ "| "); <br/> nslog (@ "| o | "); <br/> nslog (@ "================================== ===== "); <br/>}</P> <p> // comprae the two names from the specified address cards <br/>-(nscomparisonresult) comparenames: (ID) element <br/>{< br/> return [name compare: [element name]; <br/>}</P> <p> // for release the object name and email <br/>-(void) dealloc <br/>{< br/> [Name Release]; <br/> [email release]; <br/> [Super dealloc]; <br/>}< br/> @ end <br/>

 

// AddressBook interface declaration File

AddressBook. h

# Import <Foundation/NSArray. h> <br/> # import "AddressCard. h "</p> <p> @ interface AddressBook: NSObject <br/>{< br/> NSString * bookName; <br/> NSMutableArray * book; <br/>}</p> <p>-(id) initWithName: (NSString *) name; <br/>-(void) addCard: (AddressCard *) theCard; <br/>-(int) entries; <br/>-(void) list; <br/>-(void) sort; <br/>-(AddressCard *) lookup: (NSString *) theName; <br/>-(void) dealloc; </p> <p> @ end <br/>

 

// AddressBook interface implementation file

AddressBook. m

# Import "addressbook. H "</P> <p> @ implementation addressbook <br/> // set up the addressbook's name and an empty book <br/>-(ID) initwithname: (nsstring *) name <br/>{< br/> Self = [Super init]; </P> <p> If (Self) <br/> {<br/> bookname = [[nsstring alloc] initwithstring: Name]; <br/> book = [[nsmutablearray alloc] init]; <br/>}</P> <p> // because if this class has a subclass and IT use this method to initialise, <br/> // The self will not be a addressbook object, <br/> // so we return a (ID) object other than a addressbook object <br/> return self; </P> <p >}</P> <p>-(void) addcard :( addresscard *) thecard <br/>{< br/> // Add card to the mutable array <br/> [Book addobject: thecard]; <br/>}</P> <p>-(INT) entries <br/>{< br/> // count the num of address card <br/> return [Book count]; <br/>}</P> <p> // lookup address card by name-assumes and exact match <br/>-(addresscard *) lookup: (nsstring *) thename <br/> {<br/> for (INT I = 0; I <[Book count]; I ++) <br/> {<br/> If ([[Book objectatindex: I] Name] caseinsensitivecompare: thename] = nsorderedsame) <br/>{< br/> return [Book objectatindex: I]; <br/>}< br/> return nil; <br/>}</P> <p>-(void) list <br/> {<br/> nslog (@ "========= contents of: % ======== ", bookname); <br/> // quickly Enum <br/> // For (addresscard * thecard in Book) <br/> // nslog (@ "%-20 S %-32 s", [thecard. name utf8string], [thecard. email utf8string]); <br/> for (INT I = 0; I <[Book count]; ++ I) <br/>{< br/> nslog (@ "%-20 S %-32 s", [[Book objectatindex: I] Name] utf8string], [[Book objectatindex: I] email] utf8string]); <br/>}</P> <p> nslog (@ "======================== ============================== "); <br/>}</P> <p>-(void) Sort <br/>{< br/> [Book sortusingselector: @ selector (comparenames :)]; <br/>}</P> <p> // for deep release <br/>-(void) dealloc <br/>{< br/> [bookname release]; <br/> [book release]; <br/> [Super dealloc]; <br/>}< br/> @ end <br/>

 

// Main program file

AddressMain. m

# Import "AddressBook. h "<br/> # import <Foundation/NSAID utoreleasepool. h> </p> <p> int main (int argc, const char * argv []) <br/> {<br/> NSAID utoreleasepool * pool = [[NSAID utoreleasepool alloc] init]; <br/> NSString * aName = @ "Julia Kochan "; <br/> NSString * aEmail = @ "jewls337@axlc.com"; <br/> NSString * bName = @ "Tony Iannino"; <br/> NSString * bEmail = @ "tony.iannino@teachfitnees.com "; <br/> NSString * cName = @ "S Tephen Kochan "; <br/> NSString * cEmail = @" steve@kochan-wood.com "; <br/> NSString * dName = @" Jamie Baker "; <br/> NSString * dEmail = @ "jbaker@kochan-wood.com"; </p> <p> AddressCard * card1 = [[AddressCard alloc] init]; <br/> AddressCard * card2 = [[AddressCard alloc] init]; <br/> AddressCard * card3 = [[AddressCard alloc] init]; <br/> AddressCard * card4 = [[AddressCard alloc] init]; </p> <p> AddressBook * MyBook = [AddressBook alloc]; <br/> AddressCard * myCard; </p> <p> // Firest set up four address cards <br/> [card1 setName: aName andEmail: aEmail]; <br/> [card2 setName: bName andEmail: bEmail]; <br/> [card3 setName: cName andEmail: cEmail]; <br/> [card4 setName: dName andEmail: dEmail]; </p> <p> // Now initialize the address book <br/> myBook = [myBook initWithName: @ "Linda's Address Book"]; <br/> NSL Og (@ "Entries in address book after creation: % I", [myBook entries]); </p> <p> // Add some cards to the address book <br/> [myBook addCard: card1]; <br/> [myBook addCard: card2]; <br/> [myBook addCard: card3]; <br/> [myBook addCard: card4]; </p> <p> NSLog (@ "Entries in the address book after adding cards: % I", [myBook entries]); </p> <p> // List all the entries in the book now <br/> [myBook list]; </p> <p>/So Rt it and list it again <br/> [myBook sort]; <br/> [myBook list]; </p> <p> // Lookup a person by name <br/> NSLog (@ "Look up: Stephen Kochan"); <br/> myCard = [myBook lookup: @ "stephen kochan"]; </p> <p> if (myCard! = Nil) <br/> [myCard print]; <br/> else <br/> NSLog (@ "Not found! "); </P> <p> [card1 release]; <br/> [card2 release]; <br/> [card3 release]; <br/> [card4 release]; <br/> [myBook release]; <br/> [pool drain]; <br/> return 0; <br/>}< br/>