Android应用程序：获取谷歌驱动器API的访问令牌

Question

我正在写一个Android（版本ICS）应用程序。它将数据上传到谷歌驱动器。应用程序使用oauth2获取访问令牌。

第一步：获取授权令牌。

    String AUTH_TOKEN_TYPE = "oauth2:https://www.googleapis.com/auth/drive";
    // Step 1
    accountManager.getAuthToken(
        account,                                // Account retrieved using getAccountsByType("com.google")
        AUTH_TOKEN_TYPE,                        // Auth Token Type
        options,                                // Authenticator-specific options
        this,                                   // Your activity
        new OnTokenAcquired(),                  // Callback called when a token is successfully acquired
        new Handler(new OnAuthTokenError()));   // Callback called if an error occurs
}
private class OnTokenAcquired implements AccountManagerCallback<Bundle> {
    @Override
    public void run(AccountManagerFuture<Bundle> result) {
        // Get the result of the operation from the AccountManagerFuture.
        Bundle bundle;
        try {
            bundle = result.getResult();

            authToken = bundle.getString(AccountManager.KEY_AUTHTOKEN);

            Log.d(TAG,"authToken:" + authToken);

            exchangeToken access = (exchangeToken) new exchangeToken().execute();

        } catch (OperationCanceledException e) {
            e.printStackTrace();
        } catch (AuthenticatorException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
} 

    private class exchangeToken extends AsyncTask<String, Void, Void> {

    @Override
    protected Void doInBackground(String... params) {
        HttpTransport transport = new NetHttpTransport();
        JsonFactory jsonFactory = new GsonFactory();
        String CLIENT_ID = "999999999999.apps.googleusercontent.com";
        String CLIENT_SECRET = "axXXXXXXXXXXXXXXX7";

        try { // Step 2: Exchange for an access and refresh token
            GoogleTokenResponse authResponse = new GoogleAuthorizationCodeTokenRequest(transport, jsonFactory, CLIENT_ID, CLIENT_SECRET, authToken, CALLBACK_URL).execute();
            accessToken = authResponse.getAccessToken();
            Log.d("Get Access","Token:" + accessToken);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}  

 "error":"unauthorized_client"

Answer 1

你知道，为了使用驱动器API，你的用户必须在Chrome上安装你的应用程序（！）网店？通常，文档列表API是Android中更好的选择。