我试图让 Facebook 3.1 SDK 与 iOS 4.3+ 一起工作,并在应用程序从身份验证返回后显示一个对话框,但是我在验证和显示用于在旧版本 Facebook SDK 中工作的对话框时遇到了麻烦。
我已经阅读了 Facebook 文档,但有些不是很清楚,有些东西已经折旧,而另一些则不起作用。任何正确方向的帮助将不胜感激。
谢谢
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2 回答
2
如果您使用最新的 SDK,请尝试以下代码。
[FBSession openActiveSessionWithReadPermissions:[NSArray arrayWithObjects:@"read_stream", nil] allowLoginUI:YES
completionHandler:^(FBSession *session,
FBSessionState status,
NSError *error) {
if (session.isOpen) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Success!" message:@"You logged in" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Ok", nil];
[alertView show];
}
else if(status == FBSessionStateClosedLoginFailed) {
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Oops!" message:@"Loggin failed" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Ok", nil];
[alertView show];
}
}];
于 2012-11-28T07:10:24.727 回答
1
1.在您的系统中安装最新的 facebook sdk 并在您的应用程序中安装 sdk 框架。
2.在您的应用程序delegate.m中添加以下代码
- (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
// attempt to extract a token from the url
return [FBSession.activeSession handleOpenURL:url];
}
- (void)sessionStateChanged:(FBSession *)session
state:(FBSessionState) state
error:(NSError *)error
{
switch (state) {
case FBSessionStateOpen:
if (!error) {
// We have a valid session
NSLog(@"User session found");
}
break;
case FBSessionStateClosed:
case FBSessionStateClosedLoginFailed:
[FBSession.activeSession closeAndClearTokenInformation];
break;
default:
break;
}
if (error) {
UIAlertView *alertView = [[UIAlertView alloc]
initWithTitle:@"Error"
message:error.localizedDescription
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alertView show];
}
}
/*
* Opens a Facebook session and optionally shows the login UX.
*/
- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI {
NSArray *permissions = [[NSArray alloc] initWithObjects:
@"email",
@"user_likes",
nil];
return [FBSession openActiveSessionWithReadPermissions:permissions
allowLoginUI:allowLoginUI
completionHandler:^(FBSession *session,
FBSessionState state,
NSError *error) {
[self sessionStateChanged:session
state:state
error:error];
}];
}
- (void)openSession
{
[FBSession openActiveSessionWithReadPermissions:nil
allowLoginUI:YES
completionHandler:
^(FBSession *session,
FBSessionState state, NSError *error) {
[self sessionStateChanged:session state:state error:error];
}];
}
3.在您的应用程序delegate.h中添加以下代码
- (BOOL)openSessionWithAllowLoginUI:(BOOL)allowLoginUI;
4.last 在需要时调用此委托
navAppDelegate* appDelegate = [UIApplication sharedApplication].delegate;
[appDelegate openSessionWithAllowLoginUI:YES];
于 2012-11-28T07:06:17.040 回答