まず、Facebook 開発者から公開されたこの記事をお読みください。
http://developers.facebook.com/docs/getting-started/facebook-sdk-for-ios/
ステップ1では、xcode 4.3でも機能します
すべての手順を 1 つずつ注意深く読み、実装します
ステップ6では、Facebook Btnが押された場所に次のようにコードを記述します
- (IBAction)facebookBtnPressed:(id)sender
{
// if it is available to us, we will post using the native dialog
BOOL displayedNativeDialog = [FBNativeDialogs presentShareDialogModallyFrom:self
initialText:[NSString stringWithFormat:@"Here U write code which u want to post on facebook"]
image:[UIImage imageNamed:@"1.jpg"]
url:[NSURL URLWithString:@""]
handler:nil];
if (!displayedNativeDialog)
{
NSString *shareStr = [NSString stringWithFormat:@"Here U write code which u want to post on facebook"];
NSMutableDictionary* params = [[NSMutableDictionary alloc] initWithObjectsAndKeys:
shareStr,@"description",
@"sharelink", @"link",
@"ImageName", @"picture",
nil];
[self performPublishAction:^{
[FBRequestConnection startWithGraphPath:@"me/feed" parameters:params HTTPMethod:@"POST" completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (error)
{
NSLog(@"error in post");
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Success" message:@"Post Successfully" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
}
}];
}];
}
//}
//===set delagate in Viewcontroller.h of mySLComposerSheet
[mySLComposerSheet setCompletionHandler:^(SLComposeViewControllerResult result) {
NSString *output;
switch (result) {
case SLComposeViewControllerResultCancelled:
output = @"Action Cancelled";
break;
case SLComposeViewControllerResultDone:
output = @"Post Successfully";
break;
default:
break;
} //check if everything worked properly. Give out a message on the state.
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Facebook" message:output delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
[alert show];
}];
}
- (void) performPublishAction:(void (^)(void)) action {
if ([[FBSession activeSession]isOpen]) {
/*
* if the current session has no publish permission we need to reauthorize
*/
if ([[[FBSession activeSession]permissions]indexOfObject:@"publish_actions"] == NSNotFound) {
[[FBSession activeSession] reauthorizeWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
defaultAudience:FBSessionDefaultAudienceOnlyMe
completionHandler:^(FBSession *session, NSError *error) {
action();
}];
}else{
action();
}
}else{
/*
* open a new session with publish permission
*/
[FBSession openActiveSessionWithPublishPermissions:[NSArray arrayWithObject:@"publish_actions"]
defaultAudience:FBSessionDefaultAudienceOnlyMe
allowLoginUI:YES
completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
if (!error && status == FBSessionStateOpen) {
action();
}else{
NSLog(@"error");
}
}];
}
}