Per completezza:
Di seguito viene spiegato come interagire con Facebook Connect:
https://developers.facebook.com/docs/guides/web/
Le chiamate API:
https://developers.facebook.com/docs/reference/api/
Se avete bisogno di autorizzazioni estese:
https://developers.facebook.com/docs/guides/policy/examples_and_explanations/Extended_Permissions/
Un bel involucro Obj-C on Mobile Orchard:
http://www.mobileorchard.com/marketing-in-code-part-2-setting-a-users-status-in-facebook-from-an-iphone-app- un dimostrativi /
Quello che segue è la mia implementazione di un SessionViewController:
#import "SessionViewController.h"
#import "FBConnect.h"
#import "FBFeedDialog.h"
///////////////////////////////////////////////////////////////////////////////////////////////////
// This application will not work until you enter your Facebook application's API key here:
static NSString* kApiKey = @"XXXXXXXXXXXXXXXXXX";
// Enter either your API secret or a callback URL (as described in documentation):
static NSString* kApiSecret = @"XXXXXXXXXXXXXXXXXX"; // @"<YOUR SECRET KEY>";
///////////////////////////////////////////////////////////////////////////////////////////////////
@implementation SessionViewController
@synthesize label = _label;
@synthesize anImage;
- (void)done:(id)sender{
[self dismissModalViewControllerAnimated:YES];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// NSObject
- (id)init {
if (self = [super init]) {
_session = [[FBSession sessionForApplication:kApiKey secret:kApiSecret delegate:self] retain];
}
return self;
}
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:@"SessionViewController" bundle:nibBundleOrNil]) {
_session = [[FBSession sessionForApplication:kApiKey secret:kApiSecret delegate:self] retain];
}
return self;
}
- (void)dealloc {
[_session release];
[anImage release];
[super dealloc];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// UIViewController
- (void)viewDidLoad {
[_session resume];
_loginButton.style = FBLoginButtonStyleWide;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return NO;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// FBDialogDelegate
- (void)dialog:(FBDialog*)dialog didFailWithError:(NSError*)error {
_label.text = [NSString stringWithFormat:@"Error(%d) %@", error.code,
error.localizedDescription];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// FBSessionDelegate
- (void)session:(FBSession*)session didLogin:(FBUID)uid {
_permissionButton.hidden = NO;
_feedButton.hidden = NO;
NSString* fql = [NSString stringWithFormat:
@"select uid,name from user where uid == %lld", session.uid];
NSDictionary* params = [NSDictionary dictionaryWithObject:fql forKey:@"query"];
[[FBRequest requestWithDelegate:self] call:@"facebook.fql.query" params:params];
}
- (void)sessionDidLogout:(FBSession*)session {
_label.text = @"";
_permissionButton.hidden = YES;
_feedButton.hidden = YES;
}
///////////////////////////////////////////////////////////////////////////////////////////////////
// FBRequestDelegate
- (void)request:(FBRequest*)request didLoad:(id)result {
if([result isKindOfClass:[NSArray class]]){
NSArray* users = result;
NSDictionary* user = [users objectAtIndex:0];
NSString* name = [user objectForKey:@"name"];
_label.text = [NSString stringWithFormat:@"Logged in as %@", name];
}
}
- (void)request:(FBRequest*)request didFailWithError:(NSError*)error {
_label.text = [NSString stringWithFormat:@"Error(%d) %@", error.code,
error.localizedDescription];
}
///////////////////////////////////////////////////////////////////////////////////////////////////
- (IBAction)askPermissionForPhotoUpload:(id)target {
FBPermissionDialog* dialog = [[[FBPermissionDialog alloc] init] autorelease];
dialog.delegate = self;
dialog.permission = @"photo_upload";
[dialog show];
}
- (IBAction)publishPhoto:(id)target{
NSMutableDictionary *args = [[[NSMutableDictionary alloc] init] autorelease];
[args setObject:self.anImage forKey:@"image"];
FBRequest *uploadPhotoRequest = [FBRequest requestWithDelegate:self];
[uploadPhotoRequest call:@"photos.upload" params:args];
}
- (void)askPermission:(id)target {
FBPermissionDialog* dialog = [[[FBPermissionDialog alloc] init] autorelease];
dialog.delegate = self;
dialog.permission = @"status_update";
[dialog show];
}
- (void)publishFeed:(id)target {
FBFeedDialog* dialog = [[[FBFeedDialog alloc] init] autorelease];
dialog.delegate = self;
dialog.templateBundleId = 9999999;
dialog.templateData = @"{\"key1\": \"value1\"}";
[dialog show];
}
@end
