问题
I have implemented the FBConnect SDK into my app, and it works perfectly on the simulator. I then modified my app's .plist file appropriately, and added the necessary method to my AppDelegate for when Facebook is installed on the device:
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
NSLog(@"handleOpenURL Method was called and sent the following:");
NSString *urlString = [NSString stringWithContentsOfURL:(NSURL *)url];
NSLog(@"URL String: %@", urlString);
return [[flipsideViewController facebook] handleOpenURL:url];
}
From the above NSLogs and the observation that my application is returned to the foreground after authorizing access via Facebook, I infer that the FB App is handing off control to my application appropriately. Unfortunately, Facebook.m's "handleOpenURL:url" method does not actually get called as I request in my AppDelegate (i.e. neither of the below NSLogs are displayed).
- (BOOL)handleOpenURL:(NSURL *)url {
// If the URL's structure doesn't match the structure used for Facebook authorization, abort.
NSLog(@"handleOpenURL was handled by SDK. Good!");
if (![[url absoluteString] hasPrefix:[self getOwnBaseUrl]]) {
NSLog(@"handleOpenURL structure doesn't match the structure used for Facebook authorization. Aborting.");
return NO;
}
//...
As a result, my app's view controller (where I clicked my facebook button to begin with) is simply returned to the screen, and the code I placed in the 'fbDidLogin' method (used in my view controller to publish to the user's wall) never gets called as it did in the simulator.
What am I overlooking? What, if any, other information is needed to solve this problem? Any help would be very much appreciated, as I have been struggling with this for a while.
Important Summary Notes: 1.) Application runs as desired on simulator. 2.) handleOpenURL Method not called when I request it from my AppDelegate. 3.) I do not receive any errors/warnings. 4.) I can run the DemoApp on my device, and I notice that the handleOpenURL Method is called appropiately when requested by the 'DemoAppAppDelegate.'
Thanks in Advance!
回答1:
I ended up having to make my facebook object a singleton (stored in the appDelegate). Not completely sure why this was necessary though, as I was not using the fb object in multiple viewControllers. Please comment if you know why this was necessary.
See the following links for more information:
handleOpenUrl and TabBar Application
Facebook SDK: Call from multiple viewControllers
Cocoa with Love: Singletons
来源：https://stackoverflow.com/questions/6216825/fbconnects-handleopenurl-method-not-called-by-my-appdelegate