AccountManager.blockingGetAuthToken stucks

Question

我创建了一个通过Retrofit2与服务器同步数据的AbstractThreadedSyncAdapter。为了处理身份验证，我创建了一个拦截器来添加令牌。

当拦截器需要通过调用accountManager.blockingGetAuthToken(...)来刷新令牌时，它会一直阻塞，直到抛出android.accounts.OperationCanceledException。当我在AbstractAccountAuthenticator -> getAuthToken中放置一个断点时，直到拦截器完成才会命中它。

public class TokenInterceptor implements Interceptor {

  @Override
  public Response intercept(Chain chain) throws IOException {
    String oldToken = accountManager.peekAuthToken(accounts[0], LoginActivity.AUTH_TOKEN_TYPE);
    
    if(newTokenRequired){
       accountManager.invalidateAuthToken(LoginActivity.ACCOUNT_TYPE, oldToken);
    }
    
    String token = accountManager.blockingGetAuthToken(accounts[0], LoginActivity.AUTH_TOKEN_TYPE, true); // <-- stucks here
    
    // add token to request and return response
  }

}

这是AccountAuthenticator中的getAuthToken方法

@Override
public Bundle getAuthToken(AccountAuthenticatorResponse response, Account account, String authTokenType, Bundle options) {
   final AccountManager accountManager = AccountManager.get(context);
   final String refreshToken = accountManager.getPassword(account);
   final Bundle bundle = new Bundle();

   if (refreshToken != null) {
       try {
           Response<RefreshTokenResponse> refreshTokenResponse = apiService.refreshToken(refreshToken).execute();

           if (refreshTokenResponse.isSuccessful()) {
               bundle.putString(AccountManager.KEY_ACCOUNT_NAME, account.name);
               bundle.putString(AccountManager.KEY_ACCOUNT_TYPE, account.type);
               bundle.putString(AccountManager.KEY_AUTHTOKEN, refreshTokenResponse.body().getAccess_Token());
               accountManager.setPassword(account, refreshTokenResponse.body().getRefresh_token());
               return bundle;
           }
       } catch (Exception e) {
           Log.e(AccountAuthenticator.class.getName(), "getAuthToken: failed to get access token", e);
       }
   }

   // start login intent
   final Intent intent = new Intent(context, LoginActivity.class);
   intent.putExtra(LoginActivity.PARAM_USER_PASS, account.name);
   intent.putExtra(LoginActivity.AUTH_TOKEN_TYPE, authTokenType);
   intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
   bundle.putParcelable(AccountManager.KEY_INTENT, intent);
   return bundle;
}

我不认为如何调用blockingGetAuthToken不是问题，因为如果我注释掉拦截器中的invalidateAuthToken(...)，它将返回一个缓存的令牌。

当我在拦截器中发出另一个HTTP请求时，会不会有问题？(apiService.getBlaBlaBla() -> tokenInterceptor -> getAuthToken -> apiService.refreshToken() )