通过Twitter登录并尝试获取用户屏幕名称.屏幕名称每次都会生成一个空值.有任何想法吗？
PFUser *currentUser = [PFUser currentUser];
[PFTwitterUtils logInWithBlock:^(PFUser *user,NSError *error) {
if (!user) {
NSLog(@"Uh oh. The user cancelled the Twitter login.");
return;
} else if (user.isNew) {
twitterScreenName = [PFTwitterUtils twitter].screenName;
NSLog(@"%@",[PFTwitterUtils twitter].screenName);
NSString * requestString = [NSString stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@",twitterScreenName ];
NSURL *verify = [NSURL URLWithString:requestString];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:verify];
[[PFTwitterUtils twitter] signRequest:request];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response,NSData *data,NSError *connectionError) {
NSError *error;
NSDictionary* result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];
if (!error) {
user.username =twitterScreenName;
user[@"name"]= result[@"name"];
user[@"profileDescription"] = result[@"description"];
user[@"imageURL"] = [result[@"profile_image_url_https"] stringByReplacingOccurrencesOfString:@"_normal" withString:@"_bigger"];
[user saveEventually];
}
}];
[self performSegueWithIdentifier: @"username" sender: self];
}
解决方法
我是这样做的：
[PFTwitterUtils logInWithBlock:^(BOOL succeeded,NSError *error) {
if ([PFTwitterUtils isLinkedWithUser:[PFUser currentUser]]) {
NSURL *info = [NSURL URLWithString:@"https://api.twitter.com/1.1/account/settings.json"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:info];
[[PFTwitterUtils twitter] signRequest:request];
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response,NSError *connectionError) {
if (!!data) {
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
NSString *userName = dict[@"screen_name"];
userName = [userName stringByReplacingOccurrencesOfString:@"Twitter:" withString:@""];
PFUser *user = [PFUser currentUser];
user[@"Twitter"] = userName;
[user saveEventually];
} else {
//uh oh,no twitter response
}
}];
} else {
//uh oh,Failed login
}
}];
