Post to Facebook not working from delegate - iphone

Question

I have added FBSdk in my project along with SBJson classes, what files should i import in my second view controller to work my code ?
I want to post on Fb using the description under url so for that i need to include this code into my second view controller, but i am stuck in a part i founded that the below code should be added in the second view controller but the "delegate:self" not works, as i am doing this first time so can any one guide me how should i code in my second view controller keeping into account the values from the app delegate (How should i get the values from the app delegate of FB to the second view so that i can add this code in second code plz can any one correct this code)
facebook = [[Facebook alloc] initWithAppId:#"YOUR_APP_ID"];
// how should i take this id from the app delegate ?
NSArray* permissions = [NSArray arrayWithObjects:#"read_stream",
#"publish_stream", nil];
[facebook authorize:permissions delegate:self];
NSMutableDictionary* params = [[NSMutableDictionary alloc]
initWithCapacity:1]
[params setObject:#"Testing" forKey:#"name"];
[params setObject:#"IMAGE_URL" forKey:#"picture"];
[params setObject:#"Description" forKey:#"description"];
[facebook requestWithGraphPath:#"me/feed"
andParams:params
andHttpMethod:#"POST"
andDelegate:self];
Is the above code correct ?
How should i implement it in my second view controller in -(void)fb_share (method).
My App Delegate File is Like this :
#import "AppDelegate.h"
#import "ViewController.h"
#import "ServerRequests.h"
#import "DBManager.h"
#import "SBJson.h"
#include "FBSession.h"
#import "FBRequest.h"
#import "FBGraphUser.h"
NSString *const FBSessionStateChangedNotification = #"com.myapp:FBSessionStateChangedNotification";
#implementation AppDelegate
#synthesize userId;
#synthesize dbSnyced;
#synthesize fbId;
#synthesize loginView;
- (void)dealloc
{
[_window release];
[_viewController release];
[super dealloc];
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{ self.fbId = #"-1";
self.dbSnyced = NO;
self.loginView = nil;
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
self.viewController = [[[ViewController alloc] initWithNibName:#"ViewController" bundle:nil] autorelease];
self.navigationController = [[[UINavigationController alloc] initWithRootViewController:self.viewController] autorelease];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
if (![self openSessionWithAllowLoginUI:NO]) {
[self showLogin:NO];
}
return YES;
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
[self checkAccountLogin];
}
- (void) applicationDidEnterBackground:(UIApplication *)application
{
[self hideLogin:NO];
}
- (void) applicationWillTerminate:(UIApplication *)application
{
NSLog(#"applicationWillTerminate");
[self hideLogin:NO];
[FBSession.activeSession close];
}
- (void) checkAccountLogin
{
self.dbSnyced = NO;
if([ServerRequests serverIsReachableAlertIfNo:YES]) {
DBManager *db = [[[DBManager alloc] initWithPath:DB_NAME] autorelease];
NSDictionary *userDic = [[db smartQueryForArrayWithStatement:#"SELECT * FROM table WHERE id=1"] objectAtIndex:0];
NSString *loginType = [userDic objectForKey:#"login_type"];
if([loginType isEqualToString:#"none"]) {
NSLog(#"no login type");
[self showLogin:NO];
}
else {
self.userId = [[userDic objectForKey:#"user_id"] intValue];
if([loginType isEqualToString:#"Facebook"]) {
NSLog(#"Facebook account");
[FBSession.activeSession handleDidBecomeActive];
}
else if([loginType isEqualToString:#"MyApp"]) {
NSLog(#"MyApp account");
}
}
}
}
#pragma - Fb stuff
/*
* Callback for session changes.
*/
- (void)sessionStateChanged:(FBSession *)session state:(FBSessionState) state error:(NSError *)error
{
NSLog(#"sessionStateChanged");
switch (state) {
case FBSessionStateOpen:
if (!error) {
[self handleFbUserDetails];
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
[[NSNotificationCenter defaultCenter] postNotificationName:FBSessionStateChangedNotification object:session];
if (error) {
NSLog(#"error: %#", error.localizedDescription);
if(self.loginView) {
[self.loginView hideLoading];
}
}
}
/*
* Opens a Facebook session and optionally shows the login UX.
*/
- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI {
return [FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:allowLoginUI
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
[self sessionStateChanged:session
state:state
error:error];
}];
}
/*
* If we have a valid session at the time of openURL call, we handle
* Facebook transitions by passing the url argument to handleOpenURL
*/
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
// attempt to extract a token from the url
return [FBSession.activeSession handleOpenURL:url];
}
- (BOOL) activeFBSession
{
return FBSession.activeSession.isOpen;
}
- (void) closeFBSession
{
NSLog(#"closeFBSession");
[FBSession.activeSession closeAndClearTokenInformation];
}
- (void) showLogin:(BOOL)animated
{
if(!self.loginView) {
self.loginView = [[[LoginViewController alloc] init] autorelease];
[[self.navigationController topViewController] presentViewController:self.loginView animated:animated completion:nil];
}
}
- (void) hideLogin:(BOOL)animated
{
if(self.loginView) {
[self.viewController gotToTab:0];
[self.loginView hideLoading];
[[self.navigationController topViewController] dismissViewControllerAnimated:animated completion:^{
self.loginView = nil;
NSLog(#"self.loginView = nil");
}];
}
}
- (void) handleFbUserDetails
{
[[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (!error) {
NSLog(#"fb connected");
self.fbId = [user objectForKey:#"id"];
self.userId = -1;
ASIFormDataRequest *request = [ServerRequests ASIFormDataRequestForSrcipt:#"facebookUser"];
[request setPostValue:[user objectForKey:#"id"] forKey:#"fbId"];
[request setPostValue:user.first_name forKey:#"first_name"];
[request setPostValue:user.last_name forKey:#"last_name"];
[request setPostValue:user.location.name forKey:#"location"];
[request setCompletionBlock:^{
NSString *response = [request responseString];
NSLog(#"facebookUser response: %#", response);
if([response rangeOfString:#"ERROR"].location == NSNotFound) {
self.userId = [response intValue];
DBManager *db = [[DBManager alloc] initWithPath:DB_NAME];
NSString *q = [NSString stringWithFormat:#"UPDATE table SET login_type = 'Facebook', user_id = '%#' WHERE id = 1", response];
NSLog(#"%#", q);
[db executeStatement:q];
[db release];
}
else {
}
[self sessionBecameActive];
}];
[request startAsynchronous];
[self hideLogin:YES];
}
else {
NSLog(#"error: %#", error.localizedDescription);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Facebook Request Error" message:#"Cannot connect to Facebook." delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
alert.delegate = self;
[alert show];
[alert release];
if(self.loginView) {
[self.loginView hideLoading];
}
}
[ServerRequests SyncDataBase];
}];
}
- (void) signOut
{
[self closeFBSession];
DBManager *db = [[DBManager alloc] initWithPath:DB_NAME];
[db executeStatement:#"UPDATE table SET login_type = 'none' WHERE id = 1"];
[db release];
[self showLogin:YES];
}
- (void) sessionBecameActive
{
[self.viewController sessionBecameActive];
}
#end
Can any one figure out what code should i write in the -(void)fb_share method in second view controller by getting values from the delegate ?
Any Help !
I did this ... and getting Error: HTTP status code: 400 ... but the user name get's displayed on alert
[[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (!error) {
// NSArray* permissions = [NSArray arrayWithObjects:#"read_stream",
// #"publish_stream", nil];
// [facebook authorize:permissions delegate:self];
self.params = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
#"https://developers.facebook.com/ios", #"link",
#"https://developers.facebook.com/attachment/iossdk_logo.png", #"picture",
#"Facebook SDK for iOS", #"name",
#"Build great social apps and get more installs.", #"caption",
#"The Facebook SDK for iOS makes it easier and faster to develop Facebook integrated iOS apps.", #"description",
nil];
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:#"Upload to FB?"
message:[NSString stringWithFormat:#"Upload to ""%#"" Account?", user.name]
delegate:self
cancelButtonTitle:nil
otherButtonTitles:#"No",#"Yes", nil];
[FBRequestConnection startWithGraphPath:#"me/feed"
parameters:self.params
HTTPMethod:#"POST"
completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error) {
UIAlertView *tmp = [[UIAlertView alloc]
initWithTitle:#"Success"
message:#"PostUploaded"
delegate:self
cancelButtonTitle:nil
otherButtonTitles:#"Ok", nil];
[tmp show];
[tmp release];
}
}];
[tmp show];
[tmp release];
}
}];
.. what should i do now ?

Answer 1

declare facebook as a property in .h file of your appDelegate
then in second view controller import AppDelegate
in .m file where you want the Facebook object
get it like
AppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
Facebook *facebook = appDelegate.facebook;