问题描述
这是我在StackOverflow上的第一篇文章，但我使用这个很长一段时间...
This is my first post on StackOverflow but i use this for a long time...
我的问题基本上很简单，我想分享一个 UITextView（mShareText），而不提示任何对话框。基本上，用户必须在 UITextView 上填写其消息，然后单击UIButton。简单不是吗？
My problem is basically simple, I want to share the content of a UITextView(mShareText) on the user's wall without prompting any Dialog. Basically, the user has to fill its message on the UITextView and then click on a "" UIButton. Simple isn't it ?
我已经下载了Facebook iOS SDK并将其复制到我的项目中。我在我的控制器的头文件中添加了 FBConnect.h 和 Facebook.h ，并创建了一个var ： Facebook * facebook ，控制器还实现以下代理：FBSessionDelegate，FBRequestDelegate。
I've downloaded the Facebook iOS SDK and copied it into my project. I've included "FBConnect.h" and "Facebook.h" on my controller's header file and created a var : Facebook* facebook;, the controller also implements the following delegates : FBSessionDelegate, FBRequestDelegate.
在我的控制器的实现文件，当用户点击发布UIButton时，我有一个IBAction触发。
On my controller's implementation file, I've a IBAction triggered when the user clicks on the "post" UIButton.
- (IBAction)onShareByFBPressed:(id)sender {
NSLog(@"onShareByFBPressed");
// Facebook settings
NSMutableDictionary* params = [[NSMutableDictionary alloc] initWithCapacity:3];
[params setObject:mShareText.text forKey:@"message"];
[params setObject:@"http://www.example.com" forKey:@"link"];
[params setObject:@"https://www.example.com/myImg.jpg" forKey:@"picture"];
[facebook requestWithGraphPath:@"me/feed"
andParams:params
andHttpMethod:@"POST"
andDelegate:self];
[params release];
}
我已经在我的viewdidload中实现了这个：
I've implemented this on my viewdidload:
- (void)viewDidLoad
{
NSLog(@"viewDidLoad");
[super viewDidLoad];
(...)
// Test facebook
facebook = [[Facebook alloc] initWithAppId:@"XXXXXXXXXXX" andDelegate:self];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:@"FBAccessTokenKey"] && [defaults objectForKey:@"FBExpirationDateKey"]) {
facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
NSLog(@"AccessToken: %@ ExpirationDate: %@", facebook.accessToken, facebook.expirationDate);
}else{
NSLog(@"No AccessToken or ExpirationDate");
}
if (![facebook isSessionValid]) {
[facebook authorize:[NSArray arrayWithObjects:@"publish_stream", nil]];
}
}
这里有不同的方法，代理人：
Here are different methods I had to implement due to the delegates :
// Pre 4.2 support
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
return [facebook handleOpenURL:url];
}
// For 4.2+ support
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [facebook handleOpenURL:url];
}
- (void)fbDidLogin {
NSLog(@"fbDidLogin");
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
[defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
[defaults synchronize];
}
- (void)fbSessionInvalidated{
NSLog(@"fbSessionInvalidated");
}
- (void)fbDidLogout{
NSLog(@"fbDidLogout");
}
- (void)fbDidExtendToken:(NSString*)accessToken expiresAt:(NSDate*)expiresAt{
NSLog(@"fbDidExtendToken");
}
- (void)fbDidNotLogin:(BOOL)cancelled{
NSLog(@"fbDidNotLogin");
}
- (void)request:(FBRequest *)request didReceiveResponse:(NSURLResponse *)response{
NSLog(@"didReceiveResponse: %@", response);
}
- (void)request:(FBRequest *)request didFailWithError:(NSError *)error{
NSLog(@"didFailWithError: %@", [error description]);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Share on Facebook"
message:@"An error occured"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
}
不幸的是，每次尝试触发我的onShareByFBPressed方法时，我得到了以下日志错误：
Unfortunatelly, everytime I try to trigger my "onShareByFBPressed" method, I got the following error on the log:
2012-02-17 13:02:06.401 Mixtapes[935:707] didFailWithError: Error Domain=facebookErrDomain Code=10000 "The operation couldn’t be completed. (facebookErrDomain error 10000.)" UserInfo=0x1f6f60 {error=<CFBasicHash 0x1f6660 [0x3ec6d630]>{type = mutable dict, count = 3,
entries =>
2 : <CFString 0x1f64a0 [0x3ec6d630]>{contents = "type"} = <CFString 0x1f6b10 [0x3ec6d630]>{contents = "OAuthException"}
3 : <CFString 0x1f6ab0 [0x3ec6d630]>{contents = "message"} = <CFString 0x1f6a10 [0x3ec6d630]>{contents = "An active access token must be used to query information about the current user."}
6 : <CFString 0x1f6e60 [0x3ec6d630]>{contents = "code"} = 2500
}
}
任何人都可以告诉我我的实现有什么问题？
Can anyone tell me what's wrong with my implementation ??
非常感谢。
编辑：
@Adil
@Adil
感谢您的提案。它实际上工作有时。
Thanks for your proposal. It actually works somethimes.
有时我收到以下错误：
didFailWithError: Error Domain=facebookErrDomain Code=10000 "The operation couldn’t be completed. (facebookErrDomain error 10000.)" UserInfo=0xa17e0d0 {error=<CFBasicHash 0xa171e10 [0x3ec6d630]>{type = mutable dict, count = 3,
entries =>
2 : <CFString 0xa179d10 [0x3ec6d630]>{contents = "type"} = <CFString 0xa17a280 [0x3ec6d630]>{contents = "OAuthException"}
3 : <CFString 0x6127710 [0x3ec6d630]>{contents = "message"} = <CFString 0xa178db0 [0x3ec6d630]>{contents = "Error validating access token: Session is invalid. This could be because the application was uninstalled after the session was created."}
6 : <CFString 0xa17e020 [0x3ec6d630]>{contents = "code"} = 190
}
}
感谢您的帮助
推荐答案
被授权的Facebook是 AppDelegate 的Facebook对象，而不是您的 ViewController 的Facebook。
The facebook which is authororized is AppDelegate's facebook object, not your ViewController's facebook.
解决方案：
为每个 ViewController 或您需要的地方分配新的 Facebook 对象。
你应该使你的应用程序的一个属性委托。像这样：
Instead allocating new Facebook object for every ViewController or where you needed.you should make a property of your application delegate. like this:
在appDelegate.h
in appDelegate.h
@property(nonatomic, retain) Facebook *facebook;
并在appDelegate.m中进行合成，现在将Facebook的初始化设置为
and synthesize it in appDelegate.m and now put initialization of Facebook in
- (BOOL)application:(UIApplication *)ap didFinishLaunchingWithOptions:(NSDictionary *)op
{
// other code....
facebook = [[Facebook alloc] initWithAppId:@"XXXXXXXXXXX" andDelegate:self];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults objectForKey:@"FBAccessTokenKey"] && [defaults objectForKey:@"FBExpirationDateKey"]) {
facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"];
facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"];
NSLog(@"AccessToken: %@ ExpirationDate: %@", facebook.accessToken, facebook.expirationDate);
}else{
NSLog(@"No AccessToken or ExpirationDate");
}
return true;
}
现在您要使用它，请写下如下内容： p>
now where do you want to use it, write something like this:
- (void)viewDidLoad
{
[super viewDidLoad];
//...
AppDelegate *app = (AppDelegate *)[[UIApplication sharedApplication] delegate];
facebook = app.facebook;
if (![facebook isSessionValid]) {
[facebook authorize:[NSArray arrayWithObjects:@"publish_stream", nil]];
}
}
这篇关于在iOS上使用Facebook Graph API的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！