Facebook Share Dialog in iOS - ios

Question

I am trying to implement the native Share dialog from Facebook in a sample application.
Seem to have some problem in doing so.
Things I have done so far:
Included the latest Facebook SDK
Included the AdSupport, Social, Account, Security and libsqlite3.dylib.
Added the sample code from Facebook.
Added -lsqlite3.0 -ObjC to Other Linker Flags as well
Added the app id to the plist
Added the FBUserSettingsViewResources bundle and FacebookSDKResources.bundle to the project
But I can't seem to share the URL. The share dialog doesn't even appear.
My code looks like this:
Viewcontroller.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController
{
IBOutlet UIButton *buttonShare;
}
- (IBAction)shareButtonClicked:(id)sender;
#end
ViewController.m
#import "ViewController.h"
#import <FacebookSDK/FacebookSDK.h>
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)shareButtonClicked:(id)sender
{
FBShareDialogParams *params = [[FBShareDialogParams alloc] init];
params.link = [NSURL URLWithString:#"https://developers.facebook.com/ios"];
params.picture = [NSURL URLWithString:#"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png"];
params.name = #"Facebook SDK for iOS";
params.caption = #"Build great apps";
[FBDialogs presentShareDialogWithParams:params clientState:nil handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
NSLog(#"Error: %#", error.description);
} else {
NSLog(#"Success!");
}
}];
}
#end
Not able to share the URL. Need some guidance on this.

Answer 1

- (IBAction)shareButtonClicked:(id)sender
{
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
{
if (error)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
}
else if(session.isOpen)
{
NSString *str_img = [NSString stringWithFormat:#"https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png"];
NSDictionary *params = #{
#"name" :[NSString stringWithFormat:#"Facebook SDK for iOS"],
#"caption" : #"Build great Apps",
#"description" :#"Welcome to iOS world",
#"picture" : str_img,
#"link" : #"",
};
// Invoke the dialog
[FBWebDialogs presentFeedDialogModallyWithSession:nil
parameters:params
handler:
^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error) {
//NSLog(#"Error publishing story.");
[self.indicator stopAnimating];
} else {
if (result == FBWebDialogResultDialogNotCompleted) {
//NSLog(#"User canceled story publishing.");
[self.indicator stopAnimating];
} else {
//NSLog(#"Story published.");
[self.indicator stopAnimating];
}
}}];
}
}];
return;
}

Answer 2

Do you have Facebook App installed on your device? The Share dialog only works if you have the Facebook app installed.
From the Share dialog documentation :
Tip 1: What if people don't have the Facebook app installed?
The Share dialog can't be displayed if people don't have the Facebook app installed. Apps can detect this by calling [FBDialogs canPresentShareDialogWithParams:nil]; and may disable or hide a sharing button or fall back to the Feed dialog to share on the web. See the HelloFacebookSample included with the iOS SDK for an example.
From what I saw, iOS 6 will return NO for + canPresentShareDialogWithParams:. It only responds to + canPresentOSIntegratedShareDialogWithSession:. But I could be wrong here.
Anyways, this is how I do it -
1. For sharing links :
if ([FBDialogs canPresentShareDialogWithParams:nil]) {
NSURL* url = [NSURL URLWithString:link.url];
[FBDialogs presentShareDialogWithLink:url
handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
NSLog(#"Error: %#", error.description);
} else {
NSLog(#"Success");
}
}];
}
2.For OpenGraph calls :
id<FBGraphObject> pictureObject =
[FBGraphObject openGraphObjectForPostWithType:#"your_namespace:picture"
title:image.title
image:image.thumbnailUrl
url:image.url
description:#""];
id<FBOpenGraphAction> action = (id<FBOpenGraphAction>)[FBGraphObject graphObject];
[action setObject:pictureObject forKey:#"picture"];
[FBDialogs presentShareDialogWithOpenGraphAction:action
actionType:#"your_namespace:action_name"
previewPropertyName:#"picture"
handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
NSLog(#"Error: %#", error.description);
} else {
NSLog(#"Success");
}
}];
Check out other ways to share on iOS here
Hope this helps.

Answer 3

This works for me:
NSString *url = #"myUrl";
FBLinkShareParams* params = [[FBLinkShareParams alloc]init];
params.link = [NSURL URLWithString:url];
if([FBDialogs canPresentShareDialogWithParams:params]){
[FBDialogs presentShareDialogWithLink: [NSURL URLWithString:url]
name: #"Name"
caption: #"Caption"
description: #"Description"
picture: nil
clientState: nil
handler: nil];
}
else{
[...]
}

Answer 4

- (IBAction)btn_facebook:(id)sender {
[self performSelector:#selector(fb_func) withObject:nil afterDelay:0.0];
}
-(void)fb_func
{
// if the session is closed, then we open it here, and establish a handler for state changes
[FBSession openActiveSessionWithReadPermissions:nil allowLoginUI:YES completionHandler:^(FBSession *session,FBSessionState state, NSError *error)
{
if (error)
{
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:#"Error" message:error.localizedDescription delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
}
else if(session.isOpen)
{
NSString *str_link = #"";
NSLog(#"%#",str_link);
NSDictionary *params = #{
#"name" :#"name",
#"caption" : #"Description",
#"description" :#"test",
#"picture" : PostimageToPintresrAndFacebook,
#"link" : #"url",
};
// Invoke the dialog
[FBWebDialogs presentFeedDialogModallyWithSession:nil
parameters:params
handler:
^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error) {
NSLog(#"Error publishing story.");
} else {
if (result == FBWebDialogResultDialogNotCompleted) {
NSLog(#"User canceled story publishing.");
} else {
NSLog(#"Story published.");
}
}}];
}
}];
return;
}