我在一周前使用Facebook API设置了使用Facebook按钮登录，今天我无法登录或注册Facebook。我经常收到错误信息：One Take [49749：60b]哦哦。用户取消了Facebook登录。
以下是处理Facebook注册/登录的代码。
- (IBAction)fbButtonPressed:(id)sender
{
NSArray *permissions =@[@"public_profile", @"email", @"user_friends"];
[PFFacebookUtils logInWithPermissions:permissions block:^(PFUser *user, NSError *error) {
if (error) {
NSLog(@"Uh oh. The user cancelled the Facebook login.");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Log In Error" message:@"Uh oh. The user cancelled the Facebook login." delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Dismiss", nil];
[alert show];
} else {
NSLog(@"User signed up and logged in through Facebook!");
FBRequest *request = [FBRequest requestForMe];
[request startWithCompletionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error){
NSDictionary *userData = (NSDictionary *)result;
NSLog(@"%@", userData);
NSString *facebookID= userData[@"ID"];
NSURL *pictureURL = [NSURL URLWithString:[NSString stringWithFormat:@"https://graph.facebook.com/%@/picture?type=large&return_ssl_resources=1", facebookID]];
NSMutableDictionary *userProfile = [NSMutableDictionary dictionaryWithCapacity:7];
if (facebookID){
userProfile[@"facebookID"] = facebookID;
}
if (userData[@"name"]) {
user.username = userData[@"name"];
}
if (userData[@"email"]){
user.email = userData[@"email"];
}
/*
if ([pictureURL absoluteString]){
userProfile[@"pictureURL"] = [pictureURL absoluteString];
[user setObject:pictureURL forKey:@"profile_picture"];
[user saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error){
NSLog(@"ERROR: %@ %@", error, [error userInfo]);
}
}];
}
[[PFUser currentUser] saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error){
NSLog(@"ERROR: %@ %@", error, [error userInfo]);
}else{
[self.navigationController popToRootViewControllerAnimated:YES];
}
}];
*/
}
}];
}];
}
我设置应用程序的方式是HomeViewController是第一个要显示的屏幕，在viewDidLoad和ViewDidAppear中，它会检查用户是否是当前用户。代码在两个地方的原因是因为如果我退出应用程序并再次登录，它将假定当前用户是现在已注销的用户，并且应用程序现在将显示新用户不一定会看到的信息。
这是HomeViewController。
- (void)viewDidLoad
{
self.accepted = [NSMutableArray new];
self.currentUser = [PFUser currentUser];
[super viewDidLoad];
if ((self.currentUser = [PFUser currentUser])){
NSLog(@" Current User:%@", self.currentUser.username );
}else if ([PFUser currentUser] && [PFFacebookUtils isLinkedWithUser:[PFUser currentUser]]){
NSLog(@"current User: %@ is also linked W/FB!", self.currentUser.username);
}else{
[self performSegueWithIdentifier:@"showLogin" sender:self];
}
backgroundQueue = dispatch_queue_create("Word", NULL);
background2 = dispatch_queue_create("Hello", NULL);
}
-(void)viewWillAppear:(BOOL)animated
{
if (self.images == nil){
self.images = [[NSMutableArray alloc]init];
}
if ((self.currentUser = [PFUser currentUser])){
dispatch_async(backgroundQueue, ^{
PFQuery *messageQUery = [PFQuery queryWithClassName:@"Message"];
[messageQUery whereKey:@"recipientIds" equalTo:[[PFUser currentUser] objectId]];
[messageQUery findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (error){
NSLog(@"ERROR: %@, %@", error, [error userInfo]);
}else{
dispatch_async(dispatch_get_main_queue(), ^{
self.messages = objects;
[self.tableView reloadData];
NSLog(@"%@", self.messages);
});
}
}];
});
PFRelation *friendRelation = [self.currentUser relationForKey:@"friendRelation"];
PFQuery *acceptedQuery = [PFQuery queryWithClassName:@"FriendRequest"];
PFQuery *userQuery = [PFUser query];
//PFQuery *compoudQuery = [PFQuery orQueryWithSubqueries:@[acceptedQuery, userQuery]];
[acceptedQuery whereKey:@"status" equalTo:@"Accepted"];
[acceptedQuery whereKey:@"fromUser" equalTo:self.currentUser.objectId];
[userQuery whereKey:@"objectId" matchesKey:@"toUser" inQuery:acceptedQuery];
[userQuery whereKey:@"objectId" matchesKey:@"objectId" inQuery:acceptedQuery];
[userQuery findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (error){
NSLog(@" ERROR: %@ %@", error, [error userInfo]);
}else{
[self.accepted addObjectsFromArray:objects];
NSLog(@"%@" , objects);
[self.tableView reloadData];
for (PFUser *user in self.accepted){
[friendRelation addObject:user];
[self.accepted removeObject:user];
if (self.accepted.count == 0){
[self.currentUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error){
NSLog(@"ERROR: %@ %@", error, [error userInfo]);
}
}];
}
}
}
}];
}else{
[self performSegueWithIdentifier:@"showLogin" sender:self];
}
[super viewWillAppear:animated];
}
homeViewController不只是检查使用该应用程序的人的状态，但我确实显示了那些可能会对我遇到的问题产生影响的方法。
编辑：运行Parse FB集成教程会返回以下错误：
2014-05-20 23：36：18.852 IntegratingFacebookTutorial [179：60b]哦哦。发生错误：Error Domain = com.facebook.sdk Code = 2“无法完成操作。（com.facebook.sdk error 2.）”UserInfo = 0x165ab770 {com.facebook.sdk：ErrorLoginFailedReason = com.facebook .sdk：SystemLoginCancelled，com.facebook.sdk：ErrorInnerErrorKey = Error Domain = com.apple.accounts Code = 7“Facebook服务器无法满足此访问请求：验证访问令牌时出错：会话已失效，因为用户已更改密码。” UserInfo = 0x165c1700 {NSLocalizedDescription = Facebook服务器无法满足此访问请求：验证访问令牌时出错：会话已失效，因为用户已更改密码。}，com.facebook.sdk：ErrorSessionKey =，expirationDate：（null） ，refreshDate：（null），attemptsRefreshDate：0001-12-30 00:00:00 +0000，permissions：（null）＆gt;}
我最近不得不更改我的FB名称，但不是我的密码。