Intigration With Facebook in iOS using facebook sdk - ios

Question

I am trying to post image in imageview(display_image) on user's profile by using facebook SDk.Code is Like below.
FBLinkShareParams *params = [[FBLinkShareParams alloc] init];
params.link = [NSURL URLWithString:#"https://developers.facebook.com/docs/ios/share/"];
// If the Facebook app is installed and we can present the share dialog
if ([FBDialogs canPresentShareDialogWithParams:params]) {
// Present share dialog
[FBDialogs presentShareDialogWithLink:params.link
handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
// Success
NSLog(#"result %#", results);
}
}];
// If the Facebook app is NOT installed and we can't present the share dialog
} else {
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:image_display.image, #"picture", #"hello",#"caption",nil];
[FBWebDialogs presentFeedDialogModallyWithSession:nil
parameters:params
handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
if (result == FBWebDialogResultDialogNotCompleted) {
// User canceled.
NSLog(#"User cancelled.");
} else {
// Handle the publish feed callback
NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
if (![urlParams valueForKey:#"post_id"]) {
// User canceled.
NSLog(#"User cancelled.");
} else {
// User clicked the Share button
NSString *result = [NSString stringWithFormat: #"Posted story, id: %#", [urlParams valueForKey:#"post_id"]];
NSLog(#"result %#", result);
}
}
}
}];
}
it's working good with out sending image value in params dictionary. Using image app will crash here with below error
reason: '-[UIImage length]: unrecognized selector sent to instance 0x7fdd5a80e160'
can any one help me to solve this problem?
Thanks

Answer 1

You cannot post image you can only post image URL Example:-
-(void)fbShare{
// If the Facebook app is installed and we can present the share dialog
if ([FBDialogs canPresentShareDialog]) {
NSURL *imageURL = [NSURL URLWithString:#"https://profile_VMGhBTJVM5_1413618023060.jpg"];
[FBDialogs presentShareDialogWithLink:[NSURL URLWithString:#"http://www.Testinfo.com/"] name:#"name related to link" caption:nil description:#"Testing Desc" picture:imageURL clientState:nil handler:^(FBAppCall *call, NSDictionary *results, NSError *error) {
if(error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
// Success
NSLog(#"result %#", results);
}
}];
// If the Facebook app is NOT installed and we can't present the share dialog
} else {
// FALLBACK: publish just a link using the Feed dialog
// Put together the dialog parameters
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
#"testing name", #"name",
#"Testing caption.", #"caption",
#"Desc.", #"description",
#"http://www.Testinfo.com/", #"link",
#"https://profile_VMGhBTJVM5_1413618023060.jpg", #"picture",
nil];
// Show the feed dialog
[FBWebDialogs presentFeedDialogModallyWithSession:nil
parameters:params
handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
if (error) {
// An error occurred, we need to handle the error
// See: https://developers.facebook.com/docs/ios/errors
NSLog(#"Error publishing story: %#", error.description);
} else {
if (result == FBWebDialogResultDialogNotCompleted) {
// User canceled.
NSLog(#"User cancelled.");
} else {
// Handle the publish feed callback
NSDictionary *urlParams = [self parseURLParams:[resultURL query]];
if (![urlParams valueForKey:#"post_id"]) {
// User canceled.
NSLog(#"User cancelled.");
} else {
// User clicked the Share button
NSString *result = [NSString stringWithFormat: #"Posted story, id: %#", [urlParams valueForKey:#"post_id"]];
NSLog(#"result %#", result);
}
}
}
}];
}
}