Facebook error getting image on post [duplicate] - iphone

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Closed 10 years ago.
Possible Duplicate:
How to post photos to facebook iphone fbconnect
I am using FB SDK and getting an error while uploading picture on FB post from my app
in my view did load i have and UIImageView which has an image that i need to be posted on FB the code of the view did load
ImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 65, 65)];
ImageView.center = CGPointMake(42, 43);
[View addSubview:ImageView];
and in my method of FB post i did this
UIImage *image = [[UIImage alloc]init];
image = ImageView.image;
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithCapacity:3];
[params setObject:#"LINK_HERE" forKey:#"link"];
// due to this line below, i am getting an error :
// "[UIImage length]: unrecognized selector sent to instance 0x170fa0e0"
// and if use http link instead of image(UIImage) it works, but i want to use my image
[params setObject:image forKey:#"picture"];
[params setObject:#"NAME_HERE" forKey:#"name"];
[params setObject:#"DEC_HERE" forKey:#"description"];
// Invoke the dialog
[self.facebook dialog:#"feed" andParams:params andDelegate:self];
How should i use my UIImage inside this code ... any idea ??

Answer 1

You can only upload URL based images in Facebook dialog method..Images generated within the app or within app bundle cant be uploaded..
To upload those images you have to use graph API
sample code
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
image, #"source",
#"caption desc", #"message",
nil];
[facebook requestWithGraphPath:[NSString stringWithFormat:#"/me/photos?access_token=%#", self.facebook.accessToken]
andParams:params andHttpMethod:#"POST" andDelegate:self];

Answer 2

you can post your image simply like this
UIImage *imgSource = {insert your image here};
NSString *strMessage = #"Images Description";
NSMutableDictionary* photosParams = [NSMutableDictionary dictionaryWithObjectsAndKeys:
imgSource,#"source",
strMessage,#"message",
nil];
[self.facebook requestWithGraphPath:#"me/photos"
andParams:photosParams
andHttpMethod:#"POST"
andDelegate:self];

Answer 3

There is a sample app in facebook sdk, please check that.
You can also check out these tutorials:
Facebook Tutorial for iOS: How To Use Facebook’s New Graph API from your iPhone App
Facebook Tutorial for iOS: How To Get a User Profile with Facebook’s New Graph API from your iPhone App
Facebook Tutorial for iOS: How To Post to a User’s Wall, Upload Photos, and Add a Like Button from your iPhone App