내 앱에서 "오프라인 액세스 가능"권한을 요청하는 이유는 무엇입니까?

내 앱에서 "오프라인 액세스 가능"권한을 요청하는 이유는 무엇입니까? 가장 이상한 일입니다. 나는 약간의 검색을 수행했지만 실제로 작동하는 것을 찾지 못했습니다. 범위에 대해 다음을 사용해 보았습니다.

https://www.googleapis.com/auth/plus.profile.emails.read 
https://www.googleapis.com/auth/plus.login

그리고 그것은 도움이되지 않는 것 같습니다.

다음은 무슨 일이 일어나고 있는지 확인하는 데 도움이되는 스크린 샷과 내 코드입니다.

내 코드 중 일부 :

    #import "ViewController.h"

NSString *callbakc =  @"http://localhost/";
NSString *client_id = @“CLIENT ID“;
NSString *scope = @"https://www.googleapis.com/auth/userinfo.email+https://www.googleapis.com/auth/userinfo.profile+https://www.google.com/reader/api/0/subscription";
NSString *secret = @“SECRET”;
NSString *visibleactions = @"http://schemas.google.com/AddActivity";

@interface ViewController () {
NSString *authAccessToken;
UIAlertController *alertController;
}

@property (strong, nonatomic) NSMutableData *receivedData;
@property (weak, nonatomic) IBOutlet UIWebView *webView;

@end

@implementation ViewController

#pragma mark - Lifecycle

- (void)viewDidLoad {
[super viewDidLoad];


NSString *url = [NSString stringWithFormat:@"https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=%@&redirect_uri=%@&scope=%@&data-requestvisibleactions=%@",client_id,callbakc,scope,visibleactions];

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:10];

[_webView loadRequest:request];
}



#pragma mark - WebView Delegate

- (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {

[self performSelector:@selector(progressDelay:) withObject:nil afterDelay:0.0];
if ([[[request URL] host] isEqualToString:@"localhost"]) {

    // Extract oauth_verifier from URL query
    NSString* verifier = nil;
    NSArray* urlParams = [[[request URL] query] componentsSeparatedByString:@"&"];
    for (NSString* param in urlParams) {
        if (![param isEqualToString:@"error=access_denied"]) {
            NSArray* keyValue = [param componentsSeparatedByString:@"="];
            NSString* key = [keyValue objectAtIndex:0];
            if ([key isEqualToString:@"code"]) {
                verifier = [keyValue objectAtIndex:1];
//                    NSLog(@"verifier %@",verifier);
                break;
            }
        }
        else {
            [self.navigationController popViewControllerAnimated:NO];
        }
    }

    if (!verifier==0) {
        [self showAlertViewWithTitle:@"" message:@"Please wait" okAction:NO];

        NSString *data = [NSString stringWithFormat:@"code=%@&client_id=%@&client_secret=%@&redirect_uri=%@&grant_type=authorization_code", verifier,client_id,secret,callbakc];
        NSString *url = [NSString stringWithFormat:@"https://accounts.google.com/o/oauth2/token"];
        NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url]];
        [request setHTTPMethod:@"POST"];
        [request setHTTPBody:[data dataUsingEncoding:NSUTF8StringEncoding]];

        [request setHTTPShouldHandleCookies:NO];

        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
        NSLog(@"Connection: %@", theConnection);

        self.receivedData = [[NSMutableData alloc] init];
    }
    else {
        // cancel button click
        NSLog(@"not Verified!!");
    }

    return NO;
}
return YES;
}

- (void)webViewDidStartLoad:(UIWebView *)webView {
// show progress
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
[alertController dismissViewControllerAnimated:YES completion:nil];
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {

if (error.code==102) //Frame load interrupted
    return;

[alertController dismissViewControllerAnimated:YES completion:nil];
[self showAlertViewWithTitle:@"Error" message:[error localizedDescription] okAction:YES];
}

#pragma mark - NSURLConnection Delegate

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[self.receivedData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
[self showAlertViewWithTitle:@"Error" message:[NSString stringWithFormat:@"%@", error] okAction:YES];
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {

NSString *response = [[NSString alloc] initWithData:self.receivedData encoding:NSUTF8StringEncoding];

NSData *data = [response dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *tokenData = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

if ([tokenData objectForKey:@"access_token"]) {
    authAccessToken = [tokenData objectForKey:@"access_token"];
    [self getUserInfo:authAccessToken];
}
else {
    [alertController dismissViewControllerAnimated:YES completion:nil];
    NSLog(@"RESULT: %@", tokenData);
    [self showAlertViewWithTitle:[tokenData objectForKey:@"name"] message:[NSString stringWithFormat:@"%@", tokenData] okAction:YES];

    // Flush all cached data
    [[NSURLCache sharedURLCache] removeAllCachedResponses];
}

}

#pragma mark - Private Method Implementation

-(void)getUserInfo:(NSString *)token {
NSString *url = [NSString stringWithFormat:@"https://www.googleapis.com/oauth2/v1/userinfo?access_token=%@",token];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:url]];
[request setHTTPMethod:@"GET"];
[request setHTTPShouldHandleCookies:NO];

NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:request delegate:self];
NSLog(@"Connection: %@", theConnection);

self.receivedData = [[NSMutableData alloc] init];

}

-(void)progressDelay:(id)sender {
// Dismiss progress
}


@end

어떤 도움이라도 대단히 감사하겠습니다!

감사합니다