0
我使用的是Parse.com + Facebook用戶，我注意到以前沒有發生的異常事情。用戶通過Facebook創建帳戶，登錄，註銷，登錄，註銷，然後當他們嘗試登錄時，該用戶被刪除，另一個用戶被創建。爲什麼會這樣？解析 - 每次都重新創建Facebook用戶
這裏是我的註冊/登入碼：
-(IBAction)facebookSignIn:(id)sender{
CLGeocoder *geo = [[CLGeocoder alloc] init];
if(![CLLocationManager locationServicesEnabled] || [CLLocationManager authorizationStatus] == kCLAuthorizationStatusDenied){
UIAlertView *locationAlert = [[UIAlertView alloc]initWithTitle:@"Oops!" message:@"You must have location services enabled for this app to work properly" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Okay", nil];
[locationAlert show];
}else{
[PFFacebookUtils logInWithPermissions:_permissions block:^(PFUser *aUser, NSError *suError) {
if(!aUser){
NSLog(@"not fbook user because %@",[suError description]);
if([[[suError userInfo] objectForKey:@"com.facebook.sdk:ErrorLoginFailedReason"] isEqualToString:@"com.facebook.sdk:SystemLoginDisallowedWithoutError"]){
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Error" message:@"Looks like you have Facebook authentication disabled! Go to Settings > Facebook > mySwapp and turn the switch ON"delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Okay", nil];
[alert show];
}
else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Error Signing In/Logging In" message:[suError localizedDescription] delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Okay", nil];
[alert show];
}
}
else if(aUser.isNew){
NSLog(@"User is NEW");
[[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection,
NSDictionary<FBGraphUser> *user,
NSError *fbError) {
if (!fbError) {
NSLog(@"Facebook Request succeeded");
NSString *email = [user objectForKey:@"email"];
[aUser setEmail:email];
PFQuery *g = [PFQuery queryWithClassName:@"Counter"];
PFObject *cool = [g getObjectWithId:@"gpKDgNhwhw"];
[cool incrementKey:@"users"];
[cool saveEventually];
NSString *username = [NSString stringWithFormat:@"blahblah%d",[[cool objectForKey:@"users"] intValue]];
[aUser setUsername:username];
PFInstallation *installation = [PFInstallation currentInstallation];
[installation setObject:aUser forKey:@"user"];
[aUser setObject:@NO forKey:@"text"];
[aUser setObject:@YES forKey:@"snew"];
[aUser setObject:@"All" forKey:@"prefState"];
[aUser setObject:@"All" forKey:@"prefCat"];
[aUser setObject:@YES forKey:@"fnew"];
_type = @"facebook";
NSLog(@"Right before geopoint search....");
[PFGeoPoint geoPointForCurrentLocationInBackground:^(PFGeoPoint *geoPoint, NSError *error) {
if(!error){
NSLog(@"Got current geopoint!");
CLLocation *myLocation = [[CLLocation alloc]initWithLatitude:geoPoint.latitude longitude:geoPoint.longitude];
[geo reverseGeocodeLocation:myLocation completionHandler:^(NSArray *placemarks, NSError *error) {
if(!error){
CLPlacemark *pl = placemarks[0];
NSString *zip = [pl.addressDictionary objectForKey:(NSString *)kABPersonAddressZIPKey];
NSString *city = [pl.addressDictionary objectForKey:(NSString *)kABPersonAddressCityKey];
NSString *state = [pl.addressDictionary objectForKey:(NSString *)kABPersonAddressStateKey];
if(city == nil ||state ==nil){
NSLog(@"city or state is nil");
if(city==nil){
NSLog(@"city is nil");
}
if(state==nil){
NSLog(@"state is nil");
}
}
[aUser setObject:city forKey:@"city"];
[aUser setObject:state forKey:@"state"];
[aUser setObject:zip forKey:@"zip"];
[aUser setObject:geoPoint forKey:@"geopoint"];
[aUser setObject:@NO forKey:@"pref"];
[aUser setObject:@20 forKey:@"radius"];
[aUser setObject:@0 forKey:@"postCount"];
[aUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *perror) {
if(!perror && succeeded){
[self performSegueWithIdentifier:@"registerMe" sender:self]; }
else{
CCAlertView *errorAlert = [[CCAlertView alloc]initWithTitle:@"Oops!" message:[NSString stringWithFormat:@"%@. If you have already registered, please login regularly and go to the settings tab and switch on \"Link to Facebook\".",[[perror userInfo] objectForKey:@"error"]]];
[errorAlert addButtonWithTitle:@"Okay" block:^{
[aUser deleteInBackground];
}];
[errorAlert show];
}
}];
}
else{
CCAlertView *errorAlert = [[CCAlertView alloc]initWithTitle:@"Error getting Facebook data" message:[[fbError userInfo] objectForKey:@"error"]];
[errorAlert addButtonWithTitle:@"Okay" block:^{
[aUser deleteInBackground];
}];
[errorAlert show];
}
}];
}
else{
CCAlertView *errorAlert = [[CCAlertView alloc]initWithTitle:@"Facebook Sign In/Sign Up" message:[[suError userInfo] objectForKey:@"error"]];
[errorAlert addButtonWithTitle:@"Okay" block:^{
[aUser deleteInBackground];
}];
[errorAlert show];
NSString *ciid = [[PFInstallation currentInstallation] objectId];
[PFCloud callFunctionInBackground:@"logError" withParameters:@{@"installation":ciid,@"message":[suError description],@"place":@"Facebook Sign In/Sign Up"} block:^(id object, NSError *error) {
if(error){
PFObject * errorObj = [PFObject objectWithClassName:@"Error"];
[errorObj setObject:ciid forKey:@"installation"];
[errorObj setObject:[suError description] forKey:@"message"];
[errorObj setObject:@"Facebook Sign In/Sign Up" forKey:@"place"];
[errorObj saveEventually];
}
}];
}
}];
}
}];
}
else{
NSLog(@"User is OLD");
[self performSegueWithIdentifier:@"showMain" sender:self]; }
}];
}
}
這裏是我註銷代碼：
- (IBAction)goBackNow:(id)sender {
NSLog(@"gobacknow called");
[PFUser logOut];
[self.navigationController popToRootViewControllerAnimated:YES];
}