, .
SDK Facebook.
"FacebookHelper"
.h:
#import <Foundation/Foundation.h>
#import "FBConnect.h"
@protocol FBApiCallDelegate;
typedef enum FBApiCallType
{
FBApiCallNone = 0,
FBApiCallGetUserInfo = 1,
FBApiCallGetUserFriend = 2,
FBApiCallPostMessage = 3,
FBApiCallPostPicture = 4,
FBApiCallShareLink = 5,
FBApiCallPostAll = 6,
FBApiCallPostMessageFriendWall = 7
} FBApiCallType;
@interface FacebookHelper : NSObject<FBRequestDelegate, FBDialogDelegate, FBSessionDelegate> {
Facebook *objFacebook;
NSArray *arrPermission;
id<FBApiCallDelegate> apiCallDelegate;
FBApiCallType currentApiCallType;
NSString *strMessage;
NSString *strUrlTitle;
NSString *strUrl;
NSString *strCaption;
NSString *strPictureUrl;
UIImage *image;
}
@property(readonly) Facebook *objFacebook;
@property (nonatomic, assign) id<FBApiCallDelegate> apiCallDelegate;
@property (nonatomic, assign) FBApiCallType currentApiCallType;
@property (nonatomic, retain) NSString *strMessage;
@property (nonatomic, retain) NSString *strUrlTitle;
@property (nonatomic, retain) NSString *strUrl;
@property (nonatomic, retain) NSString *strCaption;
@property (nonatomic, retain) NSString *strPictureUrl;
@property (nonatomic, retain) UIImage *image;
+ (FacebookHelper *) sharedInstance;
- (void)releaseObjects;
- (void)storeAuthData:(NSString *)accessToken expiresAt:(NSDate *)expiresAt;
- (void)removeAuthData;
-(BOOL)isLoggedIn;
-(void)loginToFacebook;
-(void)logoutFromFacebook;
-(void)getUserInfo;
-(void)getUserFriends;
-(void)postMessageToWall;
-(void)postPictureToWall;
-(void)shareLinkOnWall;
-(void)postAllToWall;
-(void)postMessageToFriendWall;
- (BOOL)isEmptyString:(NSString *)strValue;
- (NSString *) trimWhiteSpace:(NSString *)strValue;
-(void)showAlertView:(NSString *)pstrTitle withMessage:(NSString *)pstrMessage delegate:(id)pDelegate;
@end
@protocol FBApiCallDelegate <NSObject>
@optional
-(void)finishUserInfoResponse:(id)result;
-(void)failedUserInfoResponse:(NSError *)error;
-(void)finishUserFriendResponse:(id)result;
-(void)failedUserFriendResponse:(NSError *)error;
-(void)finishPostMessageResponse:(id)result;
-(void)failedPostMessageResponse:(NSError *)error;
-(void)finishPostPictureResponse:(id)result;
-(void)failedPostPictureResponse:(NSError *)error;
-(void)finishShareLinkResponse:(id)result;
-(void)failedShareLinkResponse:(NSError *)error;
-(void)finishPostAllResponse:(id)result;
-(void)failedPostAllResponse:(NSError *)error;
-(void)finishPostMsgFriendWallResponse:(id)result;
-(void)failedPostMsgFriendWallResponse:(NSError *)error;
@end
.m:
#import "FacebookHelper.h"
@implementation FacebookHelper
@synthesize objFacebook;
@synthesize apiCallDelegate, currentApiCallType;
@synthesize strMessage, strUrlTitle, strUrl, strCaption, strPictureUrl, image;
#pragma mark -
#pragma mark Singleton Variables
static FacebookHelper *singletonHelper = nil;
#pragma mark -
#pragma mark Singleton Methods
- (id)init {
if (!g_kFacebookAppId) {
NSLog(@"%@", msgFBAppIDMissing);
exit(1);
return nil;
}
if ((self = [super init])) {
arrPermission = [[NSArray arrayWithObjects: @"read_stream", @"publish_stream", @"offline_access", @"email", @"read_friendlists", @"friends_birthday",nil] retain];
}
return self;
}
+ (FacebookHelper *)sharedInstance {
@synchronized(self) {
if (singletonHelper == nil) {
[[self alloc] init];
}
}
return singletonHelper;
}
+ (id)allocWithZone:(NSZone *)zone {
@synchronized(self) {
if (singletonHelper == nil) {
singletonHelper = [super allocWithZone:zone];
return singletonHelper;
}
}
return nil;
}
- (id)copyWithZone:(NSZone *)zone {
return self;
}
- (id)retain {
return self;
}
- (unsigned)retainCount {
return UINT_MAX;
}
- (void)dealloc {
[self releaseObjects];
[super dealloc];
}
- (id)autorelease {
return self;
}
- (void)releaseObjects {
[self.strMessage release];
[self.strUrlTitle release];
[self.strUrl release];
[self.strCaption release];
[self.strPictureUrl release];
[self.image release];
[objFacebook release];
objFacebook = nil;
}
#pragma mark -
#pragma mark FBDelegate(FBSessionDelegate) Methods
- (void)fbDidLogin {
NSLog(@"FB login OK");
[self storeAuthData:objFacebook.accessToken expiresAt:objFacebook.expirationDate];
switch(currentApiCallType)
{
case FBApiCallGetUserInfo:
[self getUserInfo];
break;
case FBApiCallGetUserFriend:
[self getUserFriends];
break;
case FBApiCallPostMessage:
[self postMessageToWall];
break;
case FBApiCallPostPicture:
[self postPictureToWall];
break;
case FBApiCallShareLink:
[self shareLinkOnWall];
break;
case FBApiCallPostAll:
[self postAllToWall];
break;
case FBApiCallPostMessageFriendWall:
[self postMessageToFriendWall];
break;
}
}
-(void)fbDidNotLogin:(BOOL)cancelled {
NSLog(@"FB did not login");
[self removeAuthData];
}
- (void)fbDidLogout {
NSLog(@"FB logout OK");
[self removeAuthData];
}
-(void)fbDidExtendToken:(NSString *)accessToken expiresAt:(NSDate *)expiresAt {
NSLog(@"token extended");
[self storeAuthData:accessToken expiresAt:expiresAt];
}
- (void)fbSessionInvalidated {
[self showAlertView:msgFBSessionInvalidateTitle withMessage:msgFBSessionInvalidateMessage delegate:nil];
[self fbDidLogout];
}
#pragma mark -
#pragma mark FBRequestDelegate Methods
- (void)request:(FBRequest *)request didReceiveResponse:(NSURLResponse *)response {
NSLog(@"received response");
}
- (void)request:(FBRequest *)request didLoad:(id)result {
NSLog(@"FB request OK");
switch(currentApiCallType)
{
case FBApiCallGetUserInfo:
if([self.apiCallDelegate respondsToSelector:@selector(finishUserInfoResponse:)])
[self.apiCallDelegate finishUserInfoResponse:result];
break;
case FBApiCallGetUserFriend:
if ([self.apiCallDelegate respondsToSelector:@selector(finishUserFriendResponse:)])
[self.apiCallDelegate finishUserFriendResponse:result];
break;
case FBApiCallPostMessage:
if ([self.apiCallDelegate respondsToSelector:@selector(finishPostMessageResponse:)])
[self.apiCallDelegate finishPostMessageResponse:result];
break;
case FBApiCallPostPicture:
if ([self.apiCallDelegate respondsToSelector:@selector(finishPostPictureResponse:)])
[self.apiCallDelegate finishPostPictureResponse:result];
break;
case FBApiCallShareLink:
if ([self.apiCallDelegate respondsToSelector:@selector(finishShareLinkResponse:)])
[self.apiCallDelegate finishShareLinkResponse:result];
break;
case FBApiCallPostAll:
if ([self.apiCallDelegate respondsToSelector:@selector(finishPostAllResponse:)])
[self.apiCallDelegate finishPostAllResponse:result];
break;
case FBApiCallPostMessageFriendWall:
if ([self.apiCallDelegate respondsToSelector:@selector(finishPostMsgFriendWallResponse:)])
[self.apiCallDelegate finishPostMsgFriendWallResponse:result];
break;
}
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
currentApiCallType = FBApiCallNone;
}
- (void)request:(FBRequest *)request didFailWithError:(NSError *)error {
NSLog(@"Err message: %@", [[error userInfo] objectForKey:@"error_msg"]);
switch(currentApiCallType)
{
case FBApiCallGetUserInfo:
if ([self.apiCallDelegate respondsToSelector:@selector(failedUserInfoResponse:)])
[self.apiCallDelegate failedUserInfoResponse:error];
break;
case FBApiCallGetUserFriend:
if ([self.apiCallDelegate respondsToSelector:@selector(failedUserFriendResponse:)])
[self.apiCallDelegate failedUserFriendResponse:error];
break;
case FBApiCallPostMessage:
if ([self.apiCallDelegate respondsToSelector:@selector(failedPostMessageResponse:)])
[self.apiCallDelegate failedPostMessageResponse:error];
break;
case FBApiCallPostPicture:
if ([self.apiCallDelegate respondsToSelector:@selector(failedPostPictureResponse:)])
[self.apiCallDelegate failedPostPictureResponse:error];
break;
case FBApiCallShareLink:
if ([self.apiCallDelegate respondsToSelector:@selector(failedShareLinkResponse:)])
[self.apiCallDelegate failedShareLinkResponse:error];
break;
case FBApiCallPostAll:
if ([self.apiCallDelegate respondsToSelector:@selector(failedPostAllResponse:)])
[self.apiCallDelegate failedPostAllResponse:error];
case FBApiCallPostMessageFriendWall:
if ([self.apiCallDelegate respondsToSelector:@selector(failedPostMsgFriendWallResponse:)])
[self.apiCallDelegate failedPostMsgFriendWallResponse:error];
break;
}
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];
currentApiCallType = FBApiCallNone;
}
- (void)dialogDidComplete:(FBDialog *)dialog {
NSLog(@"Published successfully on FB");
}
#pragma mark -
#pragma mark Store/Remove Authentication
- (void)storeAuthData:(NSString *)accessToken expiresAt:(NSDate *)expiresAt {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:accessToken forKey:g_kFacebookAccessToken];
[defaults setObject:expiresAt forKey:g_kFacebookExpirationDate];
[defaults synchronize];
}
- (void)removeAuthData{
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults removeObjectForKey:g_kFacebookAccessToken];
[defaults removeObjectForKey:g_kFacebookExpirationDate];
[defaults synchronize];
}
#pragma mark -
#pragma mark Public Methods
-(BOOL)isLoggedIn
{
if(objFacebook == nil)
objFacebook = [[[Facebook alloc] initWithAppId:g_kFacebookAppId andDelegate:self] retain];
NSString *strAccessToken = [[NSUserDefaults standardUserDefaults] stringForKey:g_kFacebookAccessToken];
NSLog(@"Access Token = %@", strAccessToken);
if(![self isEmptyString:strAccessToken])
{
objFacebook.accessToken = [[NSUserDefaults standardUserDefaults] stringForKey:g_kFacebookAccessToken];
objFacebook.expirationDate = (NSDate *) [[NSUserDefaults standardUserDefaults] objectForKey:g_kFacebookExpirationDate];
}
if([objFacebook isSessionValid])
return YES;
else
return NO;
return NO;
}
-(void)loginToFacebook
{
if(![self isLoggedIn])
[objFacebook authorize:arrPermission];
}
-(void)logoutFromFacebook {
[objFacebook logout:self];
[self removeAuthData];
[self releaseObjects];
}
#pragma mark -
#pragma mark Facebook Methods
-(void)getUserInfo
{
currentApiCallType = FBApiCallGetUserInfo;
if([self isLoggedIn])
{
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"name,picture",@"fields",nil];
[objFacebook requestWithGraphPath:@"me" andParams:params andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)getUserFriends
{
currentApiCallType = FBApiCallGetUserFriend;
if([self isLoggedIn])
{
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"picture,id,name,birthday,link,gender,last_name,first_name",@"fields",nil];
[objFacebook requestWithGraphPath:@"me/friends" andParams:params andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)postMessageToWall
{
currentApiCallType = FBApiCallPostMessage;
if([self isLoggedIn])
{
NSMutableDictionary *params = [[[NSMutableDictionary alloc] init] autorelease];
[params setObject:@"status" forKey:@"type"];
[params setObject:self.strMessage forKey:@"message"];
[objFacebook requestWithGraphPath:@"me/feed" andParams:params andHttpMethod:@"POST" andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)postPictureToWall
{
currentApiCallType = FBApiCallPostPicture;
if([self isLoggedIn])
{
NSMutableDictionary *params = [[[NSMutableDictionary alloc] init] autorelease];
[params setObject:self.image forKey:@"source"];
[params setObject:self.strMessage forKey:@"message"];
[objFacebook requestWithGraphPath:@"me/photos" andParams:params andHttpMethod:@"POST" andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)shareLinkOnWall
{
currentApiCallType = FBApiCallShareLink;
if([self isLoggedIn])
{
NSMutableDictionary *params = [[[NSMutableDictionary alloc] init] autorelease];
[params setObject:@"link" forKey:@"type"];
[params setObject:self.strUrl forKey:@"link"];
[params setObject:self.strMessage forKey:@"description"];
[objFacebook requestWithGraphPath:@"me/feed" andParams:params andHttpMethod:@"POST" andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)postAllToWall
{
currentApiCallType = FBApiCallPostAll;
if([self isLoggedIn])
{
NSMutableDictionary *params = [[[NSMutableDictionary alloc] init] autorelease];
[params setObject:self.strMessage forKey:@"description"];
[params setObject:self.strUrlTitle forKey:@"name"];
[params setObject:self.strUrl forKey:@"link"];
[params setObject:self.strCaption forKey:@"caption"];
[params setObject:self.strPictureUrl forKey:@"picture"];
[objFacebook requestWithGraphPath:@"me/feed" andParams:params andHttpMethod:@"POST" andDelegate:self];
}
else
[self loginToFacebook];
}
-(void)postMessageToFriendWall
{
currentApiCallType = FBApiCallPostMessageFriendWall;
if([self isLoggedIn])
{
NSString *strGraphPath = [NSString stringWithFormat:@"%@/feed", @"100002305497328"];
NSMutableDictionary *params = [[[NSMutableDictionary alloc] init] autorelease];
[params setObject:self.strMessage forKey:@"message"];
[objFacebook requestWithGraphPath:strGraphPath andParams:params andHttpMethod:@"POST" andDelegate:self];
}
else
[self loginToFacebook];
}
#pragma mark -
#pragma mark String Methods
- (BOOL)isEmptyString:(NSString *)strValue
{
NSString *copy;
if (strValue == nil)
return (YES);
if ([strValue isEqualToString:@""])
return (YES);
if ([strValue isEqualToString:@"(null)"])
return (YES);
copy = [[strValue copy] autorelease];
if ([[self trimWhiteSpace:copy] isEqualToString: @""])
return (YES);
return (NO);
}
- (NSString *) trimWhiteSpace:(NSString *)strValue
{
NSMutableString *s = [[strValue mutableCopy] autorelease];
CFStringTrimWhitespace ((CFMutableStringRef) s);
return (NSString *) [[s copy] autorelease];
}
#pragma mark -
#pragma mark Default AlertView
-(void)showAlertView:(NSString *)pstrTitle withMessage:(NSString *)pstrMessage delegate:(id)pDelegate
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:pstrTitle message:pstrMessage delegate:pDelegate cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alertView show];
[alertView release];
}
@end
. Facebook .
3 .
FacebookGlobal.h
:
#define g_kFacebookAppId @"<Your AppID>"
#define g_kFacebookAppSecret @"<Your Secret>"
#define g_kPostMessage @"<Message>"
#define g_kPostUrlTitle @"<Title>"
#define g_kPostUrl @"<Url>"
#define g_kPostCaption @"<Caption>"
#define g_kPostPictureUrl @"<Image Url>"
FacebookKey.h
:
#define g_kFacebookAccessToken @"FBAccessTokenKey"
#define g_kFacebookExpirationDate @"FBExpirationDateKey"
FacebookMessage.h
:
#define msgFBAppIDMissing @"Missing AppID"
#define msgFBSessionInvalidateTitle @"Auth Exception"
#define msgFBSessionInvalidateMessage @"Your session has expired."
.pch:
#import "FacebookGlobal.h"
#import "FacebookKey.h"
#import "FacebookMessage.h"
#import "FacebookHelper.h"
.
:
<FBApiCallDelegate>
.m, :
- (void)viewWillAppear:(BOOL)animated {
FacebookHelper *fbHelper = [FacebookHelper sharedInstance];
fbHelper.apiCallDelegate = self;
[fbHelper getUserInfo];
}
#pragma mark -
#pragma mark Get User Info Delegate
-(void)finishUserInfoResponse:(id)result{
NSLog(@"UserInfo response successed!");
NSLog(@"%@", result);
}
-(void)failedUserInfoResponse:(NSError *)error{
NSLog(@"UserInfo response failed!");
}
#pragma mark -
#pragma mark Get User Friend List
-(void)finishUserFriendResponse:(id)result{
NSLog(@"User FriendList response successed!");
NSLog(@"%@", result);
}
-(void)failedUserFriendResponse:(NSError *)error{
NSLog(@"User FriendList response failed!");
}
#pragma mark -
#pragma mark Post Message to FB Wall Delegate
-(void)finishPostMessageResponse:(id)result{
NSLog(@"Post message successed!");
NSLog(@"%@", result);
}
-(void)failedPostMessageResponse:(NSError *)error{
NSLog(@"Post message failed!");
}
#pragma mark -
#pragma mark Post Picture to FB Wall
-(void)finishPostPictureResponse:(id)result{
NSLog(@"Post picture successed!");
NSLog(@"%@", result);
}
-(void)failedPostPictureResponse:(NSError *)error{
NSLog(@"Post picture failed!");
}
#pragma mark -
#pragma mark Share Link on FB Wall
-(void)finishShareLinkResponse:(id)result{
NSLog(@"Share link successed!");
NSLog(@"%@", result);
}
-(void)failedShareLinkResponse:(NSError *)error{
NSLog(@"Share link failed!");
}
#pragma mark -
#pragma mark Post All - Message, Link, Caption, PhotoUrl
-(void)finishPostAllResponse:(id)result{
NSLog(@"Post all successed!");
NSLog(@"%@", result);
}
-(void)failedPostAllResponse:(NSError *)error{
NSLog(@"Post all failed!");
}
#pragma mark -
#pragma mark Post Message to Friend Wall Delegate
-(void)finishPostMsgFriendWallResponse:(id)result{
NSLog(@"Post message to friend wall successed!");
NSLog(@"%@", result);
}
-(void)failedPostMsgFriendWallResponse:(NSError *)error{
NSLog(@"Post message to friend wall failed!");
}
:)
Enjoy.